G975U and G975U1 Firmware Links and Flashing Discussion Here - Samsung Galaxy S10+ Guides, News, & Discussion

For those who aren't already aware, G975U is the model number of all of the US carrier versions of the S10+. The G975U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader. A "U to U" or "U1 to U1" flash does not require a factory reset, but changing from one firmware to the other will require one. Also, U firmware is identical for the 4 base files (AP, BL, CP, CSC) for each individual build, no matter which carrier it comes from. So if you download 2 different carrier versions of the exact same build, the 4 base files will be identical. Where the firmware differs is in the USERDATA file - that's where the carrier bloatware and customizations reside.
Manual Odin flashing is designed for those who:
- want to manually update to a newer version of U firmware on their U device, either because they don't want to wait for their carrier's OTA or because OTAs aren't working on their device, or a different carrier got a new feature/patch before they did
- want to flash U1 firmware to their U device
- want to convert from U1 firmware to carrier U firmware
- want to convert from one carrier's U firmware (with all apps and bloatware) to a different carrier's U firmware (with all apps and bloatware)
For those who aren't already aware, anyone can now download firmware for almost any Samsung device any time that they want, via the various firmware download tools posted here on XDA like SamFirm or Frija. There are threads and info about them here on XDA so I won't waste time explaining - do a search if you're not already familiar with these tools. But they only provide whatever the latest/newest/current version is - nothing older. I pay for a subscription to a site that gets the official releases (usually) before they hit the firmware download tools, so that's where my files come from.
This is not a "beginner's guide to Odin flashing" -type post/thread, so I won't list basic, step-by-step flashing instructions. My threads are geared towards those who already know what they're doing. If you're new to manually flashing Samsung firmware (or haven't done it in a long time), I recommend you consult one of those "beginner's" guides- there are tons of them here on XDA.
Happy flashing!
U firmware: https://www.androidfilehost.com/?w=files&flid=290649
U1 firmware: https://www.androidfilehost.com/?w=files&flid=290650
Notes:
- I compress extra small for space and bandwith savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
- I remove the .md5 from each file solely for faster flashing (Odin won't check the file integrity without it). Rest assured, the files are perfectly fine and safe - Odin has a million safechecks built in.
- My naming method for folders is: build - bootloader - Android version
So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Any zips with "wipe" in the title do not have a HOME CSC included.
- I have identical threads for the S10e and S10 as well
- the correct procedure for switching from one carrier's firmware to another is given in post #25
- You can get USERDATAs from SamFirm for everything but AT&T and Cricket- those files will never be on SamFirm. So in addition to the 5 piece firmware, I'll try to always upload one USERDATA per bootloader increment for those carriers.
- For identifying USERDATAS, and to know what region/CSC to use in the firmware download tools if you're downloading yourself:
AIO = Cricket (not available via firmware download tools)
ATT = AT&T (not available via firmware download tools)
BST = Boost Mobile
CCT = Xfinity Mobile (Comcast)
CHA = Spectrum Mobile (Charter)
SPR = Sprint
TMB = T-Mobile
TMK = Metro PCS
USC = US Cellular
VZW = Verizon
XAA = U1 firmware

This is looking great, was about to pre-order the T Mobile variant, when I remembered that they disable the (Data) Quick Toggle and I have to fiddle around to turn it off, Well, Not the case with the Unlocked version, at least on my Note 9. Anyways, this will come in handy, thanks!

Willy318is said:
This is looking great, was about to pre-order the T Mobile variant, when I remembered that they disable the (Data) Quick Toggle and I have to fiddle around to turn it off, Well, Not the case with the Unlocked version, at least on my Note 9. Anyways, this will come in handy, thanks!
Click to expand...
Click to collapse
Hopefully One UI stays the same. You're welcome

Good to see and will be a good place to hangout! ?

Loved your dedication to uploads on the 9+! Glad to see you here as well! I preodered my ATT 10+ yesterday. Got my mom and two daughters the 10+ / 10e also. Happy to see you'll be providing firmware for the "E" also!

Build SBA added.
Only CCT, VZW, and SPR USERDTAs (for now), but it can be flashed to any S10+

So I flashed this on my new U1 and went to U firmware. My Wifi didn't work after this. I can't connect to any Wifi network... I will try going back to U1 and see if the issue is fixed. Maybe I have a defective phone?

rocket31337 said:
So I flashed this on my new U1 and went to U firmware. My Wifi didn't work after this. I can't connect to any Wifi network... I will try going back to U1 and see if the issue is fixed. Maybe I have a defective phone?
Click to expand...
Click to collapse
Hmmm that's weird. I'm assuming you wiped?

G975U and G975U1 firmware is now live and downloadable in SamFirm. Getting U1 requires manual entry - Auto will not work. U firmware is up for these carriers:
Xfinity Mobile
Spectrum Mobile
Sprint
T-Mobile
US Cellular
Verizon (have to use Manual entry - Auto will not work)
So going forward, I'll only be adding full builds if I can get them before they hit SamFirm, and only if there isn't build for that month already (eg. I won't add any more February builds since SBA is already up.). I will try to stay up to date on USERDATAs for AT&T and Cricket, since AT&T won't let their firmware be put on SamFirm.

Thank you for this. Just flashed my U1 to TMB SBA for video calling feature.

iBowToAndroid said:
G975U and G975U1 firmware is now live and downloadable in SamFirm. U firmware is up for these carriers:
Xfinity Mobile
Spectrum Mobile
Sprint
T-Mobile
US Cellular
Verizon (have to use Manual entry - Auto will not work)
So going forward, I'll only be adding full builds if I can get them before they hit SamFirm, and only if there isn't build for that month already (eg. I won't add any more February builds since SBA is already up.). I will try to stay up to date on USERDATAs for AT&T and Cricket, since AT&T won't let their firmware be put on SamFirm.
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Click to collapse
Is it? I'm not seeing anything.
http://fota-cloud-dn.ospserver.net/firmware/XAA/SM-G975U1/version.xml

YandereSan said:
Is it? I'm not seeing anything.
http://fota-cloud-dn.ospserver.net/firmware/XAA/SM-G975U1/version.xml
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Click to collapse
Not sure what that link is, but U1 is available via the SamFirm tool. I did forget to mention that you have to use Manual input, so i'll edit that part

iBowToAndroid said:
Not sure what that link is, but U1 is available via the SamFirm tool. I did forget to mention that you have to use Manual input, so i'll edit that part
Click to expand...
Click to collapse
That's for auto download. How'd you get the PDA/CSC/Phone?

YandereSan said:
That's for auto download. How'd you get the PDA/CSC/Phone?
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Click to collapse
Manual input, like I said. You have to type in the builds manually

iBowToAndroid said:
Manual input, like I said. You have to type in the builds manually
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Click to collapse
Yes, I realize that. G975U1UEU1ASAU/G975U1OYM1ASAU/G975U1UEU1ASAU
Where are you pulling the values from? Do you have the physical device?

YandereSan said:
Yes, I realize that. G975U1UEU1ASAU/G975U1OYM1ASAU/G975U1UEU1ASAU
Where are you pulling the values from? Do you have the physical device?
Click to expand...
Click to collapse
No. I'm getting them from the place where I get my firmware files from

I have a question and I hope someone can help me. I just purchased a s10 not the plus. And its unlocked which is great but has three UK branding on boot up ect..,
Is it possible to remove this maybe install another rom via oden? And it wouldn't void warranty or enable a security problem on the phone? Any help would be much appreciated

Guessing ATT is late to the party as usual with no ASAB userdata yet? Doesn't appear they've pushed it yet ?

vimto25 said:
I have a question and I hope someone can help me. I just purchased a s10 not the plus. And its unlocked which is great but has three UK branding on boot up ect..,
Is it possible to remove this maybe install another rom via oden? And it wouldn't void warranty or enable a security problem on the phone? Any help would be much appreciated
Click to expand...
Click to collapse
This thread is for U models (Qualcomm). You need to find a thread about the F models (Exynos).
todd3835 said:
Guessing ATT is late to the party as usual with no ASAB userdata yet? Doesn't appear they've pushed it yet ?
Click to expand...
Click to collapse
Anyone can flash any update - USERDATA isn't required unless you're changing from U1 to U, or from one carrier to another.

iBowToAndroid said:
This thread is for U models (Qualcomm). You need to find a thread about the F models (Exynos).
Anyone can flash any update - USERDATA isn't required unless you're changing from U1 to U, or from one carrier to another.
Click to expand...
Click to collapse
Ah ok. On my S9+ I did some Odin flashing and even though I was on the att release, I wasn't getting OTA's. It was odd. Only way to restore OTA updates was flashing with ATT userdata.
On a side note, ATT has pushed the ASAB update for both the S10+ and the S10E.

Related

How to change csc to India

Hi all,
I'm a bit annoyed with Samsung where July Update is already out but I'm still on May Update.
I would like to change my csc to India so that I get updates faster.
Can someone explain or provide a guide on how changing the csc to india please?
Thanks in advance
Simple
Ultiweap said:
Hi all,
I'm a bit annoyed with Samsung where July Update is already out but I'm still on May Update.
I would like to change my csc to India so that I get updates faster.
Can someone explain or provide a guide on how changing the csc to india please?
Thanks in advance
Click to expand...
Click to collapse
Hey mate! Just flash newest firmware of India via ODIN
Or use Samsung Smart Switch for computer to get faster updates :good:
Bl4Ck R34Ct0r said:
Hey mate! Just flash newest firmware of India via ODIN
Or use Samsung Smart Switch for computer to get faster updates :good:
Click to expand...
Click to collapse
Is it safe to flash A505F firmware on the A505FN device? As far as I know, the only difference is NFC.
And is it possible to void the warranty by doing this?
I tried Smart Switch a few times, but no updates.
Bl4Ck R34Ct0r said:
Hey mate! Just flash newest firmware of India via ODIN
Or use Samsung Smart Switch for computer to get faster updates :good:
Click to expand...
Click to collapse
Hi thanks for your reply.
Should I need to remove all accounts, and make a factory reset first?
Smart Switch only will provide you the newest firmware in the same line, not an option to use other different firmware from a different region.
Ever is recommended to do a factory reset/format data before to "switch" to other firmware and make a backup before to restore it in just minutes with SS.
Install Phone Info(Samsung) and there you will find the CSC availables for your device before to change the firmware (most of the international models are multi_CSC compatible), search for the regions and compare them here https://www.****************/2017/0...specific-product-code-csc-and-country-region/ if some of them is convenient for you then you can flash it, check before your bootloader version, I think all are now in v1 but check it before to go further.
SubwayChamp said:
Smart Switch only will provide you the newest firmware in the same line, not an option to use other different firmware from a different region.
Ever is recommended to do a factory reset/format data before to "switch" to other firmware and make a backup before to restore it in just minutes with SS.
Install Phone Info(Samsung) and there you will find the CSC availables for your device before to change the firmware (most of the international models are multi_CSC compatible), search for the regions and compare them here https://www.****************/2017/0...specific-product-code-csc-and-country-region/ if some of them is convenient for you then you can flash it, check before your bootloader version, I think all are now in v1 but check it before to go further.
Click to expand...
Click to collapse
Hi thanks for you reply. I checked with phone info but I don't have CSC INS available but can I flash INS firmware and will it work?
Ultiweap said:
Hi thanks for you reply. I checked with phone info but I don't have CSC INS available but can I flash INS firmware and will it work?
Click to expand...
Click to collapse
Yes, you usually can (I switched a lot of times) but you could find some issues regarding to radio/baseband depending on how different they´re.
Take a backup before using Smart Switch, take note of your actual firmware in a safe place if something goes wrong and don´t forget to enable USB debugging and OEM unlock before to go.
SubwayChamp said:
Yes, you usually can (I switched a lot of times) but you could find some issues regarding to radio/baseband depending on how different they´re.
Take a backup before using Smart Switch, take note of your actual firmware in a safe place if something goes wrong and don´t forget to enable USB debugging and OEM unlock before to go.
Click to expand...
Click to collapse
Hi,
Good yes already did a backup and OEM Unlock and USB Debugging are one.
I'm simply waiting the firmware to be downloaded. Take very long time to download from samfrew
Finally succeeded in flashing to INS.
I forgotten to remove my Sim Card but even that it has changed the CSC.
Thanks a lot for your help @SubwayChamp
Ultiweap said:
Finally succeeded in flashing to INS.
I forgotten to remove my Sim Card but even that it has changed the CSC.
Thanks a lot for your help @SubwayChamp
Click to expand...
Click to collapse
Hey, what's the model of your device? Is it FN, or F? Because Indian firmware is A505F, so I don't know if I can flash A505F firmware on my FN device.
Ibroxx said:
Hey, what's the model of your device? Is it FN, or F? Because Indian firmware is A505F, so I don't know if I can flash A505F firmware on my FN device.
Click to expand...
Click to collapse
My model is A505F. I don't think you may install F on FN. It may work but you may have several problem with correct functionality of the phone or even brick it.
Ibroxx said:
Hey, what's the model of your device? Is it FN, or F? Because Indian firmware is A505F, so I don't know if I can flash A505F firmware on my FN device.
Click to expand...
Click to collapse
F firmware on an FN device should be ok afaik, but I believe you'll loose NFC
Also keep in mind that INS csc has this string in cscfeature_network.xml
<CscFeature_Message_ConfigImeiTracker>+919560345888,+918424098931,+919176905802</CscFeature_Message_ConfigImeiTracker>
I remember that this was a problem on custom roms for the old A-series since all roms for some reason added INS csc, so a bunch of users in europe got charged extra for messages to india if they didn't remove that from cscfeatures..
Not sure if it still acts the same, but I can confirm that the string is there in INS csc for A50.
Ultiweap said:
Finally succeeded in flashing to INS.
I forgotten to remove my Sim Card but even that it has changed the CSC.
Thanks a lot for your help @SubwayChamp
Click to expand...
Click to collapse
Can you make a new thread and post the process?
tys0n said:
F firmware on an FN device should be ok afaik, but I believe you'll loose NFC
Also keep in mind that INS csc has this string in cscfeature_network.xml
<CscFeature_Message_ConfigImeiTracker>+919560345888,+918424098931,+919176905802</CscFeature_Message_ConfigImeiTracker>
I remember that this was a problem on custom roms for the old A-series since all roms for some reason added INS csc, so a bunch of users in europe got charged extra for messages to india if they didn't remove that from cscfeatures..
Not sure if it still acts the same, but I can confirm that the string is there in INS csc for A50.
Click to expand...
Click to collapse
Thank you.
There is finally firmware with July patch for FN versions of this device, so probably I'll wait few days, because only 5 countries in Europe got an update to the newest version, skipping June security patch, but I hope we'll have new features in the camera.

Anyone running U1 firmware on N975W in Canada?

I live in Canada and have a N975W and want to flash the star wars U1 firmware, but before I do I wanna know what happens when you put a Canadian Carrier sim in?!? Will the U1 CSC have Canadian Carrier info preset? Will I have to manually modify to get things like MMS to work? Or does the U1 firmware have Canadian stuff preloaded that gets triggered with the Sim card?
Thanks
Nobody?
Exynos
rmanaudio16 said:
I live in Canada and have a N975W and want to flash the star wars U1 firmware, but before I do I wanna know what happens when you put a Canadian Carrier sim in?!? Will the U1 CSC have Canadian Carrier info preset? Will I have to manually modify to get things like MMS to work? Or does the U1 firmware have Canadian stuff preloaded that gets triggered with the Sim card?
Thanks
Click to expand...
Click to collapse
If u have exynos model of note 10 plus like me then u can flash the firmware that I have flashed starwars edition.
zaibjan said:
If u have exynos model of note 10 plus like me then u can flash the firmware that I have flashed starwars edition.
Click to expand...
Click to collapse
I've got a Snapdragon, same hardware as USA
rmanaudio16 said:
I've got a Snapdragon, same hardware as USA
Click to expand...
Click to collapse
I think then u can flash as I have totally different csc
Now from the first just remember to do that whith already inserted sim into your phone so it can instantly fetch the settings of your sim carrier .
rmanaudio16 said:
I live in Canada and have a N975W and want to flash the star wars U1 firmware, but before I do I wanna know what happens when you put a Canadian Carrier sim in?!? Will the U1 CSC have Canadian Carrier info preset? Will I have to manually modify to get things like MMS to work? Or does the U1 firmware have Canadian stuff preloaded that gets triggered with the Sim card?
Thanks
Click to expand...
Click to collapse
The American CSC does not contain information for Canadian carriers. After you flash the American U1 firmware, flash the Canadian CSC. There is only one CSC for Canada, and it contains information for all the Canadian carriers (Bell, Rogers, Telus, etc.). After flashing the Canadian CSC, when you insert a SIM from a Canadian carrier it applies the settings for your carrier's VoLTE, wi-fi calling, APN, etc.
If you flash Canadian CSC after flashing full U1 firmware will it not effect the U1 firmware? The CSC file is so large I'm wondering how it will effect the U1 firmware. Anyone do this yet? Do I need to use modified Odin?
Have you done this? Does flashing a different CSC effect the firmware?
---------- Post added at 11:58 AM ---------- Previous post was at 11:57 AM ----------
I would appreciate any input from someone who has tried this please. I really want to flash the star wars Android 10 for U1 on my 975W but am afraid that CSC will be different and not sure If flashing CSC from a different firmware will work as the file is so big.
if it doesnt work, you just flash back to stock firmware and csc.
just make sure its for the same processor.
OK, so, I flashed first Star Wars Android 9 version of U1 firmware to test and it works perfectly. Booted up with Canadian carrier sim and it loaded all APN settings. Everything works perfectly.
Flashed Android 10 version of Star Wars U1 firmware and its all good.
So you can load U1 firmware on N975W unlocked version. Same hardware and works in both countries. Do not even need Canadian CSC.
Do not load the HOME CSC file. It will wipe everything but its worth it. Firmware is solid and beautiful.
By flashing unlocked firmware, did you get rid of any carrier bloatware?
Can I ask you guys an info? I own N975u1, on first boot It haven't Greek language and I choose it later at setting. Does N975w on first boot has Greek language? So I install N975w firmware to solve my problem?(some settings remains in English).
975W is Canadian model and i have it on my note 10+ with carrier esk or eastlink if you wish to know what carrier esk stands for. If you are trying to get your phone to show Greek language I do not believe the 975w firmware would be a good choice. It lets you select which country you are from when you start up a freshly formatted phone but I have never selected any language other than Canada which is English. Just thought I would let you know that my model is also a Snapdragon chipset and I don't know if you can Flash another firmware unless you unlock Bootloader and I do not know if that is possible currently on a Snapdragon chipset Note 10.
TWiiTCH said:
975W is Canadian model and i have it on my note 10+ with carrier esk or eastlink if you wish to know what carrier esk stands for. If you are trying to get your phone to show Greek language I do not believe the 975w firmware would be a good choice. It lets you select which country you are from when you start up a freshly formatted phone but I have never selected any language other than Canada which is English. Just thought I would let you know that my model is also a Snapdragon chipset and I don't know if you can Flash another firmware unless you unlock Bootloader and I do not know if that is possible currently on a Snapdragon chipset Note 10.
Click to expand...
Click to collapse
I have n975w snapdragon with Virgin mobile. I can't access my oem unlock. Is there a firmware I can flash that will give me access while maintaining my plan with virgin?
Sudosuperman said:
I have n975w snapdragon with Virgin mobile. I can't access my oem unlock. Is there a firmware I can flash that will give me access while maintaining my plan with virgin?
Click to expand...
Click to collapse
The only phones with an unlockable bootloader are the N9750 (chineese variant) and Exynos models.
Can you please be more specific with what you are looking for within regards to firmware. Other then the information/answers posted in the first page of this thread I saw this thread, but depending on what your looking for specifically the post may not be of any help.
Also be aware that if you want to retain full compatibility with Virgin then you shouldn't go messing around with the firmware. Flashing other firmware (especially for US models) can result in things not working the way they would normally.
scottusa2008 said:
The only phones with an unlockable bootloader are the N9750 (chineese variant) and Exynos models.
Can you please be more specific with what you are looking for within regards to firmware. Other then the information/answers posted in the first page of this thread I saw this thread, but depending on what your looking for specifically the post may not be of any help.
Also be aware that if you want to retain full compatibility with Virgin then you shouldn't go messing around with the firmware. Flashing other firmware (especially for US models) can result in things not working the way they would normally.
Click to expand...
Click to collapse
OK, so only the exynos version of my phone is oem unlockable? I am just trying to be able to root my phone, i figured if I could flash an oem unlocked firmware while keeping my carrier then I would be able to do so.
Sudosuperman said:
OK, so only the exynos version of my phone is oem unlockable? I am just trying to be able to root my phone, i figured if I could flash an oem unlocked firmware while keeping my carrier then I would be able to do so.
Click to expand...
Click to collapse
Correct.
Only the models with the exynos chipset and the N9750 variant can be rooted.
Sudosuperman said:
I have n975w snapdragon with Virgin mobile. I can't access my oem unlock. Is there a firmware I can flash that will give me access while maintaining my plan with virgin?
Click to expand...
Click to collapse
Only firmware for OEM UNLOCK switch in developer menu is exynos models. I found other sites on the net stating SM-N975W Snapdragon can be bootloader unlocked but i tried them all and none worked. DO NOT flash exynos firmware on Snapdragon model as you may ruin your phone or void warranty. Luckily mine still shows official and knox counter didn't get tripped. Sorry, wish I had better news 4 ya.
TWiiTCH said:
Only firmware for OEM UNLOCK switch in developer menu is exynos models. I found other sites on the net stating SM-N975W Snapdragon can be bootloader unlocked but i tried them all and none worked. DO NOT flash exynos firmware on Snapdragon model as you may ruin your phone or void warranty. Luckily mine still shows official and knox counter didn't get tripped. Sorry, wish I had better news 4 ya.
Click to expand...
Click to collapse
Respect. I've accepted that my phone can't be rooted. Gunna buy a nexus 7 with kali nethunter pre installed to save the hassle XD THANKS FOR THE HELP!!!

Carrier firmware

I currently have the US s20Ultra unlocked model on ATT (don't foresee changing carriers). Currently I am missing features like VoLTE and VVM. What other features would I be missing if I stay on the unlocked firmware? Can I flash the ATT firmware to get those missing features? Can I flash back to unlock?
Thank you
What's the CSC on your device?
varcor said:
What's the CSC on your device?
Click to expand...
Click to collapse
I am not sure what I am looking for. Its currently on ATT/ATT.
Open your dialer, enter *#1234#, press the Dial Icon. You'll see CSC: G98??, the next 3 letters will be your device's CSC Code. Your Service Provider's CSC is "ATT" which is different than the CSC in your device. Whether or not you can change the CSC depends on your device's CSC. Device firmware is always configured for the specific, original CSC or Multi CSC's.
This post may be the best workaround.
https://forum.xda-developers.com/showpost.php?p=82444733&postcount=8
varcor said:
Open your dialer, enter *#1234#, press the Dial Icon. You'll see CSC: G98??, the next 3 letters will be your device's CSC Code. Your Service Provider's CSC is "ATT" which is different than the CSC in your device. Whether or not you can change the CSC depends on your device's CSC. Device firmware is always configured for the specific, original CSC or Multi CSC's.
This post may be the best workaround.
https://forum.xda-developers.com/showpost.php?p=82444733&postcount=8
Click to expand...
Click to collapse
My CSC: G988U1OYM1ATE4
garyHal said:
My CSC: G988U1OYM1ATE4
Click to expand...
Click to collapse
Your device has Multiple CSC's which are included in OYM so you should be able to change your CSC to ATT, which is the CSC for AT&T.
Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press the Dial Icon, you should see a screen with the list of available CSC codes for your device. Select ATT and tap the Install option.
Be aware your firmware isn't AT&T, it's unbranded so even if you change the CSC, full call functionality may not be available. You can obtain AT&T's firmware at SamMobile.
https://www.sammobile.com/samsung/galaxy-s20-ultra/firmware/SM-G988U1/ATT/
varcor said:
Your device has Multiple CSC's which are included in OYM so you should be able to change your CSC to ATT, which is the CSC for AT&T.
Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press the Dial Icon, you should see a screen with the list of available CSC codes for your device. Select ATT and tap the Install option.
Be aware your firmware isn't AT&T, it's unbranded so even if you change the CSC, full call functionality may not be available. You can obtain AT&T's firmware at SamMobile.
https://www.sammobile.com/samsung/galaxy-s20-ultra/firmware/SM-G988U1/ATT/
Click to expand...
Click to collapse
Varcor, thank you so much for all the directions.
As it stands right now, it is already on ATT. Once I flash over to the ATT firmware, would I be able to flash back to an unbranded one in the future, for whatever reason? Additionally, do I have to stay on the ATT firmware to retain those features? Or could just having my phone communicate with ATT at least once with my "branded" phone and then flash back retain those features?
garyHal said:
Varcor, thank you so much for all the directions.
As it stands right now, it is already on ATT. Once I flash over to the ATT firmware, would I be able to flash back to an unbranded one in the future, for whatever reason? Additionally, do I have to stay on the ATT firmware to retain those features? Or could just having my phone communicate with ATT at least once with my "branded" phone and then flash back retain those features?
Click to expand...
Click to collapse
You're most welcome. Yes, flashing back to unbranded won't be a problem. I don't think you will be able to retain the features if you go back to the unbranded firmware, it's not configured to allow full call feature functionality. Also, after flashing to the AT&T firmware you may need to contact their CSR for external programing. Good luck!
S20+ AT&T
Hi Varcor,
I'm new in this firmware things. I'm from Singapore and has been using S20 Exynos, but due to the extreme heat, bad battery life,etc. I've decided to import S20+ Snapdragon from AT&T, according to the Service provider SW ver information, it's showing as SAOMC_SM-G986U-OYN_ATT_QQ_0023 (I believe this means the set are unlocked).
With that said, I noticed that the software is outdated and the security patch level is on February 1,2020. when I referring to the AT&T website, It's showing as the latest software is QP1A.190711.020.G986USQU1ATE6 (June update) and mine still on QP1A.190711.020..G986USQU1ATAW (February). My CSC is G986UOYN1ATAW.
My question now is, whenever I tried to hit the software update, it's keep telling me that my software is up to date. Is there's a reason why it's wont detect the update? If it's because I'm in Singapore not US, then there's no choice that I need to flash using the firmware from Sammobile. The problem is which one that I need to download as AT&T carrier is not listed there. There's only T-mobile, Sprint, Unknown, USA. Please help.
https://www.sammobile.com/samsung/galaxy-s20-plus/firmware/#SM-G986U
Raigar said:
Hi Varcor,
I'm new in this firmware things. I'm from Singapore and has been using S20 Exynos, but due to the extreme heat, bad battery life,etc. I've decided to import S20+ Snapdragon from AT&T, according to the Service provider SW ver information, it's showing as SAOMC_SM-G986U-OYN_ATT_QQ_0023 (I believe this means the set are unlocked).
With that said, I noticed that the software is outdated and the security patch level is on February 1,2020. when I referring to the AT&T website, It's showing as the latest software is QP1A.190711.020SAOMC_SM-G986U-OYN_ATT_QQ_0023 (June update) and mine still on QP1A.190711.020..G986USQU1ATAW (February). My CSC is G986UOYN1ATAW.
My question now is, whenever I tried to hit the software update, it's keep telling me that my software is up to date. Is there's a reason why it's wont detect the update? If it's because I'm in Singapore not US, then there's no choice that I need to flash using the firmware from Sammobile. The problem is which one that I need to download as AT&T carrier is not listed there. There's only T-mobile, Sprint, Unknown, USA. Please help.
https://www.sammobile.com/samsung/galaxy-s20-plus/firmware/#SM-G986U
Click to expand...
Click to collapse
I would reach out to SamMobile and inquire why they're not listing the AT&T Firmware Update. You state your CSC is G986UOYN1ATAW. That CSC is also associated with T-Mobile. You're not using an AT&T SIM Card, correct? On a Multi-CSC Device when you insert a different SIM, the device should update to the correct Service Provider. If you're using a SIM from a Service Provider other than AT&T you probably won't receive AT&T Software Updates, which are distributed by Samsung, not AT&T via OTA.
varcor said:
I would reach out to SamMobile and inquire why they're not listing the AT&T Firmware Update. You state your CSC is G986UOYN1ATAW. That CSC is also associated with T-Mobile. You're not using an AT&T SIM Card, correct? On a Multi-CSC Device when you insert a different SIM, the device should update to the correct Service Provider. If you're using a SIM from a Service Provider other than AT&T you probably won't receive AT&T Software Updates, which are distributed by Samsung, not AT&T via OTA.
Click to expand...
Click to collapse
I did try to reach them, but for some reason they are giving me some irrelevant answer. Something like "You probably don't get OTA-updates (otherwise you got them already from AT&T)". We are having a conversation breakdown there, I think they are not an english speaker (or my english is just bad). Really? that CSC is associated with T-Mobile? now I'm getting more confused because the box is stated AT&T and it's sealed.
I'm using Singapore SIM card (Singtel), so you were saying this set I'm using right now is a Multi-CSC device? If i were to flash to the other carrier firmware, will it create any problem?
Raigar said:
I did try to reach them, but for some reason they are giving me some irrelevant answer. Something like "You probably don't get OTA-updates (otherwise you got them already from AT&T)". We are having a conversation breakdown there, I think they are not an english speaker (or my english is just bad). Really? that CSC is associated with T-Mobile? now I'm getting more confused because the box is stated AT&T and it's sealed.
I'm using Singapore SIM card (Singtel), so you were saying this set I'm using right now is a Multi-CSC device? If i were to flash to the other carrier firmware, will it create any problem?
Click to expand...
Click to collapse
Flashing Singtel Firmware won't work since it's configured for the Exynos SoC. Multi-SIM Devices have only regional Service Providers available, you don't have Singtel as an option in an AT&T device. Based on your situation I would consider one of two options. The first would be insert an AT&T SIM just for OTA updates. Not sure if you received an AT&T SIM when you purchased the device, if you didn't they're not hard to find. The second and likely best option is sell the device and purchase a Global Variant with a Snapdragon SoC, you'll receive updates regardless of your Service Provider. If it makes you feel any better there's lots of users in the same predicament. They want the Snapdragon device in regions selling mainly Exynos devices. Workarounds are in many situations are challenging,
varcor said:
Your device has Multiple CSC's which are included in OYM so you should be able to change your CSC to ATT, which is the CSC for AT&T.
Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press the Dial Icon, you should see a screen with the list of available CSC codes for your device. Select ATT and tap the Install option.
Be aware your firmware isn't AT&T, it's unbranded so even if you change the CSC, full call functionality may not be available. You can obtain AT&T's firmware at SamMobile.
https://www.sammobile.com/samsung/galaxy-s20-ultra/firmware/SM-G988U1/ATT/
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Click to collapse
Varcor
I have the exact same phone and using the same network as garyHal, unlocked 988U1/OYM/ATT.
I got my bootloader unlocked and decided to apply the ATT firmware (
G988U1UES1BTJ2). My CSC was already ATT so I didn't perform the csc install step.
After setting the phone up as new, it still seems like its running the unlocked mode. I don't see any kind of branding or extra ATT stuff that may have been downloaded. How do I verify that I have the right firmware and CSC set to ATT?
Thank you.
itchyUnder said:
Varcor
I have the exact same phone and using the same network as garyHal, unlocked 988U1/OYM/ATT.
I got my bootloader unlocked and decided to apply the ATT firmware (
G988U1UES1BTJ2). My CSC was already ATT so I didn't perform the csc install step.
After setting the phone up as new, it still seems like its running the unlocked mode. I don't see any kind of branding or extra ATT stuff that may have been downloaded. How do I verify that I have the right firmware and CSC set to ATT?
Thank you.
Click to expand...
Click to collapse
How did you manage to unlock your bootloader since US Snapdragon variants are locked down pretty tight? I don't think the firmware is dedicated to ATT, it's Multi CSC, designed to function with a number of US Carriers. You should be delighted you're not suffering with ATT bloatware! To check the Active CSC go to About Phone, Settings, Software Information, Service Provider SW ver. On the bottom string the first three letters are the Active CSC on your device. You can review this article for additional information on Firmware and CSC's.
CSC and Home_CSC | All You Need to Know About ODIN Samsung Flash
Here is all you need to know about the CSC and Home_CSC.What exactly is a Firmware?A firmware is nothing but a permanent software which is programme
www.getdroidtips.com
varcor said:
How did you manage to unlock your bootloader since US Snapdragon variants are locked down pretty tight? I don't think the firmware is dedicated to ATT, it's Multi CSC, designed to function with a number of US Carriers. You should be delighted you're not suffering with ATT bloatware! To check the Active CSC go to About Phone, Settings, Software Information, Service Provider SW ver. On the bottom string the first three letters are the Active CSC on your device. You can review this article for additional information on Firmware and CSC's.
CSC and Home_CSC | All You Need to Know About ODIN Samsung Flash
Here is all you need to know about the CSC and Home_CSC.What exactly is a Firmware?A firmware is nothing but a permanent software which is programme
www.getdroidtips.com
Click to expand...
Click to collapse
If I am reading it correctly, this is what I am seeing:
ATT/ATT/XAA
I am happy that I don't have the ATT bloatware but I also feel that ATT is locking me out of some of their features because I don't have a "branded" phone, such as wifi call or visual voicemail. Am I misunderstanding your post from above, #6, that flashing ATT firmware would give me the carrier features?
Additionally, does the firmware determine what frequency bands I am using and if I am taking full advantage of ATT's offerings?
itchyUnder said:
If I am reading it correctly, this is what I am seeing:
ATT/ATT/XAA
I am happy that I don't have the ATT bloatware but I also feel that ATT is locking me out of some of their features because I don't have a "branded" phone, such as wifi call or visual voicemail. Am I misunderstanding your post from above, #6, that flashing ATT firmware would give me the carrier features?
Additionally, does the firmware determine what frequency bands I am using and if I am taking full advantage of ATT's offerings?
Click to expand...
Click to collapse
Flashing ATT Dedicated Firmware would give you the best chance for additional call features ASSUMING your Ulocked Device is capable of incorporating those features. It should do the trick since the hardware is identical to an ATT device. I would head to an ATT Store to get a definitive answer. Samsung has made it more and more challenging to mix and match branded and unlocked devices with CSC or Firmware modifications. In many cases you won't know until you try. Users want their smartphones to be smart, to work perfectly in every situation but the major carriers use proprietary tools to hold clients hostage.
varcor said:
Open your dialer, enter *#1234#, press the Dial Icon. You'll see CSC: G98??, the next 3 letters will be your device's CSC Code. Your Service Provider's CSC is "ATT" which is different than the CSC in your device. Whether or not you can change the CSC depends on your device's CSC. Device firmware is always configured for the specific, original CSC or Multi CSC's.
This post may be the best workaround.
https://forum.xda-developers.com/showpost.php?p=82444733&postcount=8
Click to expand...
Click to collapse
Please bro i need a help
My note 20 ultra is ATT unlocked
Because I'm not in united state
But in section about phone
My model is N986U note U1
am searching sammobil to udate my phone to android 13
I found nothing at&t with my model number N986U
Only N986U1
What should I do to update to android 13
This should do the trick.
Download Samsung Galaxy Note 20 Ultra 5G SM-N986U USC USA (US Cellular) firmware
All Samsung firmwares for Galaxy Note 20 Ultra 5G in USA (US Cellular) with model code SM-N986U. We offer free and fast download options. Check them out now.
www.sammobile.com
romano_ezzat said:
Please bro i need a help
My note 20 ultra is ATT unlocked
Because I'm not in united state
But in section about phone
My model is N986U note U1
am searching sammobil to udate my phone to android 13
I found nothing at&t with my model number N986U
Only N986U1
What should I do to update to android 13
Click to expand...
Click to collapse
Download Samsung Galaxy Note 20 Ultra 5G SM-N986U USC USA (US Cellular) firmware
All Samsung firmwares for Galaxy Note 20 Ultra 5G in USA (US Cellular) with model code SM-N986U. We offer free and fast download options. Check them out now.
www.sammobile.com
varcor said:
This should do the trick.
Download Samsung Galaxy Note 20 Ultra 5G SM-N986U USC USA (US Cellular) firmware
All Samsung firmwares for Galaxy Note 20 Ultra 5G in USA (US Cellular) with model code SM-N986U. We offer free and fast download options. Check them out now.
www.sammobile.com
Click to expand...
Click to collapse
I misunderstanding
What a trick bro
It's a link for firmware updates
I need to know which one compatible with my note
And after flash will still unlocked?

Flashing firmware on different model

Hi all,
1- I have S20 ultra G9880 model. But I'm using it in Egypt so my provider csc is different than the firmware's csc. Since then, I never recieved OTA updates although there were multiple updates and I had to download the whole firmware and install it with odin. So is there a way to get OTA updates back to work?
2- I read on some other websites that there is a way to flash firmware from different model (for example G988U) on any snapdragon based model (like the one I had) but this has to be done with a patched Odin so it will ignore the model differences. My question is, is this correct? if so can some one post the link to this patched odin ? or is there another way to flash a firmware of different model but with snapdragon processor in it?
Thanks in advance
I've not heard of this being possible before. But even if it were possible, flashing the firmware for the US model, wouldn't do you any good either, since that firmware doesn't have support for Egypt either. On top of that, the US model supports different bands that your phone doesn't, hence the difference in the modem.
stefan243546 said:
I've not heard of this being possible before. But even if it were possible, flashing the firmware for the US model, wouldn't do you any good either, since that firmware doesn't have support for Egypt either. On top of that, the US model supports different bands that your phone doesn't, hence the difference in the modem.
Click to expand...
Click to collapse
Well, I wanted to install the US firmware mainly to be able to use the One UI 3.0 beta.
If there is another way to install it on my phone without flashing the US firmware then I'd be grateful to know
Sounds like a recipe for a disaster...
lordvoldmort said:
Hi all,
1- I have S20 ultra G9880 model. But I'm using it in Egypt so my provider csc is different than the firmware's csc. Since then, I never recieved OTA updates although there were multiple updates and I had to download the whole firmware and install it with odin. So is there a way to get OTA updates back to work?
2- I read on some other websites that there is a way to flash firmware from different model (for example G988U) on any snapdragon based model (like the one I had) but this has to be done with a patched Odin so it will ignore the model differences. My question is, is this correct? if so can some one post the link to this patched odin ? or is there another way to flash a firmware of different model but with snapdragon processor in it?
Thanks in advance
Click to expand...
Click to collapse
Did you flash the same Firmware (CSC) to get OTA's? Samsung sends updates, not your service provider regardless of your location so it's odd you're not receiving them.
On the SM-G9880 there are only 3 FW's compatible for flashing, Hong Kong, Taiwan and China. Android 11, One Ul 3.0 isn't yet available for your device however the Source Code is online. Likely you're better off waiting a bit longer, it should be available for your device by the end of the year.
lordvoldmort said:
Hi all,
1- I have S20 ultra G9880 model. But I'm using it in Egypt so my provider csc is different than the firmware's csc. Since then, I never recieved OTA updates although there were multiple updates and I had to download the whole firmware and install it with odin. So is there a way to get OTA updates back to work?
2- I read on some other websites that there is a way to flash firmware from different model (for example G988U) on any snapdragon based model (like the one I had) but this has to be done with a patched Odin so it will ignore the model differences. My question is, is this correct? if so can some one post the link to this patched odin ? or is there another way to flash a firmware of different model but with snapdragon processor in it?
Thanks in advance
Click to expand...
Click to collapse
With respect to updates if you own a PC often times Samsung's Smart Switch platform will distribute these before OTA's become avaliable which eliminates the need to flash your device.

General G990U Firmware Here

Obviously without a device to flash them on, these are provided for purposes of extraction and tinkering only. If anyone wants a USERDATA for a specific carrier, let me know and I can get it.
Zips are compressed extra small for space and bandwidth savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
Happy poking around!
https://drive.google.com/drive/folders/1DndBwOhf4ZfUbz0SPvrp_SD5nNYgno_5?usp=sharing
S21 FE firmware can now be pulled via Frija and the other similar firmware download tools. Xfinity Mobile (CCT) and Spectrum Mobile (CHA) can be pulled via Auto, and T-Mobile (TMB) can be pulled via Manual entry. U1 firmware (XAA) can be pulled via Manual entry
- Android 12 has been released for U firmware (build UK5)
- T-Mobile firmware can now be pulled via Auto, in Frija
- ATT USERDATA has been uploaded
iBowToAndroid said:
- Android 12 has been released for U firmware (build UK5)
- T-Mobile firmware can now be pulled via Auto, in Frija
- ATT USERDATA has been uploaded
Click to expand...
Click to collapse
*Removed
I34z1k said:
Could you perhaps help me figure out how to grab latest for the SM-990B? I'm guessing the attached means I'm out of luck for now?
Click to expand...
Click to collapse
You don't have G990U or G990U1 so you're in the wrong thread
iBowToAndroid said:
Obviously without a device to flash them on, these are provided for purposes of extraction and tinkering only. If anyone wants a USERDATA for a specific carrier, let me know and I can get it.
Zips are compressed extra small for space and bandwidth savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
Happy poking around!
S21 FE (SM-G990Ux) - Google Drive
drive.google.com
Click to expand...
Click to collapse
Is there a way for me to get that Stock call Background?
what is the pass for UK5.zip?
Hello im new..need help...My csc is XAA so is my model g996u1 or g996u. It shows in my phone as g996u but im unable to find any firmware with xaa csc for model g996u. Fyi im living in Malaysia so i need to manually flash a firmware, hmmm really need help.
Rain700 said:
Hello im new..need help...My csc is XAA so is my model g996u1 or g996u. It shows in my phone as g996u but im unable to find any firmware with xaa csc for model g996u. Fyi im living in Malaysia so i need to manually flash a firmware, hmmm really need help.
Click to expand...
Click to collapse
You're in the wrong thread
iBowToAndroid said:
- Android 12 has been released for U firmware (build UK5)
- T-Mobile firmware can now be pulled via Auto, in Frija
- ATT USERDATA has been uploaded
Click to expand...
Click to collapse
Could you please provide the password for the UK5 firmware?
Thanks
Hi, I need your help guys
Is it possible flash stock US firmware on Verizon S21 FE? Where I could find step by step process?

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