Need Android Pie firmware details for Unlocked T-Mobile Samsung S9 - Samsung Galaxy S9 Questions & Answers

Hi All,
I have Samsung S9 Unlocked T-mobile from US and currently in India. Currently i have Oreo Version.
As all know, it doesnt have VOLTE option enabled which is needed for my sim network for voice calls to go through.
Somewhere i read Pie update will have VOLTE option and hence i am trying to update to Pie update.
I downloaded G960USQS6CSGB firmware for T-mobile, but before upating firmware using Odin, i got doubt if it will stick to T Mobile after update. This will make my phone not usable in India.
I tried to check online, but couldnt get direct answer and hence posting in new thread.
Can someone help clarify if it will lock the mobile to T-Mobile or will the phone be still in unlocked state?
Also i see two CSC files in the firmware folder. CSC and HOME_CSC. Which one to use?
If I should update with some other firmware for being unlocked and yet to get PIE update, please point to required firmware name or links.
Also will updating to PIE update will have VOLTE option ? Kindly confirm.
Thanks in Advance.

abalanag said:
Hi All,
I have Samsung S9 Unlocked T-mobile from US and currently in India. Currently i have Oreo Version.
As all know, it doesnt have VOLTE option enabled which is needed for my sim network for voice calls to go through.
Somewhere i read Pie update will have VOLTE option and hence i am trying to update to Pie update.
I downloaded G960USQS6CSGB firmware for T-mobile, but before upating firmware using Odin, i got doubt if it will stick to T Mobile after update. This will make my phone not usable in India.
I tried to check online, but couldnt get direct answer and hence posting in new thread.
Can someone help clarify if it will lock the mobile to T-Mobile or will the phone be still in unlocked state?
Also i see two CSC files in the firmware folder. CSC and HOME_CSC. Which one to use?
If I should update with some other firmware for being unlocked and yet to get PIE update, please point to required firmware name or links.
Also will updating to PIE update will have VOLTE option ? Kindly confirm.
Thanks in Advance.
Click to expand...
Click to collapse
csc will factory reset your phone, home_csc wont
volte wasnt removed from pie, so that shouldnt be an issue
the firmware version you posted has the 6th bootloader revision, im betting here is a 7th available for your phone, but the 6th version should be fine as well
as far as the unlocked state of the phone goes, it shouldnt re-lock, but im paranoid lol. Have you looked into the U1 versions of the phones firmware? Theyre inherently unlocked firmwares and dont have any of that irritating bloatware **** in them

youdoofus said:
csc will factory reset your phone, home_csc wont
volte wasnt removed from pie, so that shouldnt be an issue
the firmware version you posted has the 6th bootloader revision, im betting here is a 7th available for your phone, but the 6th version should be fine as well
as far as the unlocked state of the phone goes, it shouldnt re-lock, but im paranoid lol. Have you looked into the U1 versions of the phones firmware? Theyre inherently unlocked firmwares and dont have any of that irritating bloatware **** in them
Click to expand...
Click to collapse
Thanks youdoofus the inputs. Say by chance if it gets locked, is there a way to unlock the phone again from here?
may be then i will try to load U1 versions otherwise. Thanks alot.

abalanag said:
Thanks youdoofus the inputs. Say by chance if it gets locked, is there a way to unlock the phone again from here?
may be then i will try to load U1 versions otherwise. Thanks alot.
Click to expand...
Click to collapse
if it has no financial obligation to any carrier and the phone locks to that carrier, then the carrier it locked to would be required to release it. I cant imagine how it would lock to t-mob tho

Factory unlocked phones stay unlocked, no matter what firmware you flash.
Carrier locked phones that were properly unlocked by the carrier (they provide the code to SIM unlock the phone) will stay unlocked, again, no matter what firmware you flash to it - as long as it's compatible. Flashing the wrong firmware may just brick the phone. But, at least it's still SIM unlocked.
Phones that had some kind of software hack installed to trick the phone into thinking it's unlocked will lose the unlock status when you flash a firmware that also wipes the phone. Then it will come back as carrier locked again, because the hack is gone.
That last case is the only case I know of that will "re-lock" a phone. I've never heard of a carrier unlocked phone spontaneously re-locking under any circumstance.

Hi,
Thanks for the details. I tried to flash G960U1UES6CSG4_G960U1OYM6CSG4_XAA firmware. But while loading AP file in ODIN, it gave some error. Couldnt understand what is the error as its in chinese.
Then i loaded G960USQS6CSGB_G960UOYN6CSGB_TMB firmware which i downloaded previously. This got loaded in ODIN without any issues. And i am able to flash to phone. On rebooting, saw that phone moved to Pie version.
But i couldnt find VOLTE option (Enhanced calling) option. Does anyone know which version will enable that option?
Or anyother way to enable that please.
Thanks in advance.

joeldf said:
Factory unlocked phones stay unlocked, no matter what firmware you flash.
Carrier locked phones that were properly unlocked by the carrier (they provide the code to SIM unlock the phone) will stay unlocked, again, no matter what firmware you flash to it - as long as it's compatible. Flashing the wrong firmware may just brick the phone. But, at least it's still SIM unlocked.
Phones that had some kind of software hack installed to trick the phone into thinking it's unlocked will lose the unlock status when you flash a firmware that also wipes the phone. Then it will come back as carrier locked again, because the hack is gone.
That last case is the only case I know of that will "re-lock" a phone. I've never heard of a carrier unlocked phone spontaneously re-locking under any circumstance.
Click to expand...
Click to collapse
another user just posted up in another thread that they had a factory cricket phone that got unlocked, he put an at&t sim in it and it installed at&t apps and locked the phone to at&t FWIW
---------- Post added at 02:42 PM ---------- Previous post was at 02:36 PM ----------
abalanag said:
Hi,
Thanks for the details. I tried to flash G960U1UES6CSG4_G960U1OYM6CSG4_XAA firmware. But while loading AP file in ODIN, it gave some error. Couldnt understand what is the error as its in chinese.
Then i loaded G960USQS6CSGB_G960UOYN6CSGB_TMB firmware which i downloaded previously. This got loaded in ODIN without any issues. And i am able to flash to phone. On rebooting, saw that phone moved to Pie version.
But i couldnt find VOLTE option (Enhanced calling) option. Does anyone know which version will enable that option?
Or anyother way to enable that please.
Thanks in advance.
Click to expand...
Click to collapse
if your Odin error messages are in Chinese, youve obtained a modified version. Itll probably work, but youll get that Chinese stuff whenever it needs to tell you anything. I dont know which versions have volte tbh. Sorry man.

youdoofus said:
another user just posted up in another thread that they had a factory cricket phone that got unlocked, he put an at&t sim in it and it installed at&t apps and locked the phone to at&t FWIW
---------- Post added at 02:42 PM ---------- Previous post was at 02:36 PM ----------
if your Odin error messages are in Chinese, youve obtained a modified version. Itll probably work, but youll get that Chinese stuff whenever it needs to tell you anything. I dont know which versions have volte tbh. Sorry man.
Click to expand...
Click to collapse
Thanks youdoofus for trying to help. For me atleast it didnt get locked when i moved to Pie. I will try other methods.
I will try to root the phone for enabling volte, but the methods that i tried didnt work.

youdoofus said:
another user just posted up in another thread that they had a factory cricket phone that got unlocked, he put an at&t sim in it and it installed at&t apps and locked the phone to at&t FWIW
Click to expand...
Click to collapse
That's just weird.

joeldf said:
That's just weird.
Click to expand...
Click to collapse
yeah, sort of. The CSC's on these things are weird. Im starting to believe that these new versions of android are just like windows ISOs where they have all the versions compressed into one file and it uses a directory file to tell the firmware which version to install. Im sure a code writing dev can confirm or deny this thought, but at this point its merely a weak theory

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Time Used: 2.00 s

Related

How To Get Updates - Unlocked With XAC but No Updates (and other questions)

Hi All:
I followed the "Canadian W XAC Firmware" thread and have been very pleased - except that I have not gotten any updates since the April 1, 2017 Security Patch and the original XAC firmware available (QDE). A screenshot is attached and can be seen below.
This was originally a locked AT&T device that my company bought for me, right now the phone is showing XAA/XAA/ATT. I'm not really concerned about that - it's working fine as a device on TMB. I just want to make sure I'm getting the updates!
I guess this puts a couple questions into play:
Is there a difference between SM-955U and SM-955U1 hardware and/or firmware? Mine is currently on 955U, but it seems like they're fully interchangable - and the unlocked XAA is only under 955U1, as far as I can find.
Since I'm not concerned with TMB's features (which I've actually been able to activate in part anyway through the "IMS Settings" function), is there any danger in flashing the XAA (955U1) firmware?
If this is possible, can I flash the 955U1 firmware over the current firmware without a factory data reset? I'd rather not have to set up everything again.
Thank you!!!
Same issue here. Bought VZW s8+ originally, then flashed 955U1, then flashed TMB CSC. Now the string reads TMB/TMB/VZW. Not getting any update.
hchchchc said:
Same issue here. Bought VZW s8+ originally, then flashed 955U1, then flashed TMB CSC. Now the string reads TMB/TMB/VZW. Not getting any update.
Click to expand...
Click to collapse
You'll never change the last one to TMB. The last code is hardwired into your device in the EFS folder and cannot be changed without root. It only shows what variant you originally received and should have no effect on updates, as far as I know.
---------- Post added at 02:07 PM ---------- Previous post was at 02:00 PM ----------
patchmonkey said:
Hi All:
I followed the "Canadian W XAC Firmware" thread and have been very pleased - except that I have not gotten any updates since the April 1, 2017 Security Patch and the original XAC firmware available (QDE). A screenshot is attached and can be seen below.
This was originally a locked AT&T device that my company bought for me, right now the phone is showing XAA/XAA/ATT. I'm not really concerned about that - it's working fine as a device on TMB. I just want to make sure I'm getting the updates!
I guess this puts a couple questions into play:
Is there a difference between SM-955U and SM-955U1 hardware and/or firmware? Mine is currently on 955U, but it seems like they're fully interchangable - and the unlocked XAA is only under 955U1, as far as I can find.
Since I'm not concerned with TMB's features (which I've actually been able to activate in part anyway through the "IMS Settings" function), is there any danger in flashing the XAA (955U1) firmware?
If this is possible, can I flash the 955U1 firmware over the current firmware without a factory data reset? I'd rather not have to set up everything again.
Thank you!!!
Click to expand...
Click to collapse
No, there's no danger in flashing the XAA U1 firmware. There's several threads that show you how to do it, but it will wipe your device. Use Smart Switch to back everything up to your SD card. Between that, Samsung Cloud, and Google backup, you won't have to set much up again.
Once you've flashed the XAA firmware, you put your T-Mo SIM card in, and it will give a message stating it's switching carriers or something and reboot. You will still be on the unlocked, bloatfree firmware, but it will change your CSC string to TMB/TMB/ATT (the last code can't be changed), and you will have all the T-Mo carrier features except for video calling and RCS texting. If those are important to you, then you can always flash the T-Mo carrier software, but you'll get the bloat with it. (not much bloat on the T-Mo software).
As far as updates, everything I've read said you will receive updates OTA, but I didn't stay on T-Mo firmware long enough to find out. I just switched back to the original XAA firmware, and we haven't received a July update yet.
Something's not right here. Your model name should show as "SM-G955U1". Yours does not - yours shows SM-G955U still. If you want to be on the unlocked firmware, just search here on XDA for the princecomsy odin and download the latest firmware for the unlocked model and flash it. July security patch still isn't released, but having come from the unlocked S7e I can't say I'm surprised.
I don't know why you would need to follow any XAC thread to flash the unlocked firmware - all I did was use the modified odin and flash the unlocked firmware on my TMO S8+. Got the 1st OTA (unlocked U1 OTA) 1 week after flashing to U1.
There's a bunch of misinformation on how to change software versions. There's no reason to change anything with the carrier/region info (XAA/TMO/XAC, etc). As long as you are using a snapdragon S8 you can flash any (snapdragon) carrier firmware using the modified odin.

Can all USA Galaxy S9 models be flashed to each other's firmware?

I've read that the Galaxy S9 hardware is identical for all carriers in the USA.
If I bought a factory unlocked Galaxy S9 can I flash it to the carrier I am using (Verizon, Sprint, T-Mobile, AT&T) to enable carrier specific software and features? Can I flash it back to the unlocked firmware?
I already see a thread about flashing the unlocked firmware to carrier models so I am assuming there are no issues there.
Can one carrier model be flashed to another carrier model?
No, bootloaders are different, with the S7 there was an unbranded U firmware that was compatible with most of them, unlocked firmware will be that one for the S9, but no you cannot just flash different device firmwares to the wrong model
I was able to flash the ATT rom onto my Verizon S9. I got a VZ s9 from work but I'm on ATT. For the most part it's worked great, I had done the same thing previously with a Galaxy S7. I say for the most part b/c I am on here tonight to post a question myself about the fact that I'm getting a delay with MMS messages. I imagine it has something to do with the APNs I have setup, but I can't seem to figure it out.
toronado13 said:
I was able to flash the ATT rom onto my Verizon S9. I got a VZ s9 from work but I'm on ATT. For the most part it's worked great, I had done the same thing previously with a Galaxy S7. I say for the most part b/c I am on here tonight to post a question myself about the fact that I'm getting a delay with MMS messages. I imagine it has something to do with the APNs I have setup, but I can't seem to figure it out.
Click to expand...
Click to collapse
Did you have to flash to the U1 software first?
I do think that is what I ended up doing... tried to go directly first and it kept failing. Got fed up and decided to just try and put the bone stock rom on it, and that went on really easily.... so after using it like that a few days I tried to drop the ATT rom on it and it worked without issue.
SEALBoy said:
I've read that the Galaxy S9 hardware is identical for all carriers in the USA.
If I bought a factory unlocked Galaxy S9 can I flash it to the carrier I am using (Verizon, Sprint, T-Mobile, AT&T) to enable carrier specific software and features? Can I flash it back to the unlocked firmware?
I already see a thread about flashing the unlocked firmware to carrier models so I am assuming there are no issues there.
Can one carrier model be flashed to another carrier model?
Click to expand...
Click to collapse
Yes, but you need to go to the u1 firmware 1st then to the other carrier firmware. Also make sure you avoid the newer firmwares with the new bootloader, as the unlocked model and certain carrier models don't have the new bootloader.
*Detection* said:
No, bootloaders are different, with the S7 there was an unbranded U firmware that was compatible with most of them, unlocked firmware will be that one for the S9, but no you cannot just flash different device firmwares to the wrong model
Click to expand...
Click to collapse
lolol
yes u can.. u can flash between U and U1 firmwares no problem..
normally ud b correct tho but since s8/s8+ it has been ok.. just cant flash 9600 or 9650 to a U or U1 device
elliwigy said:
lolol
yes u can.. u can flash between U and U1 firmwares no problem..
normally ud b correct tho but since s8/s8+ it has been ok.. just cant flash 9600 or 9650 to a U or U1 device
Click to expand...
Click to collapse
That'll be why I still thought that then, coming straight from the S7 > S9
Had many members flashing the wrong firmwares thinking they could do that and bricking their S7s / wondering why ODIN failed
*Detection* said:
That'll be why I still thought that then, coming straight from the S7 > S9
Had many members flashing the wrong firmwares thinking they could do that and bricking their S7s / wondering why ODIN failed
Click to expand...
Click to collapse
I tried downloading vzw firmware G960USQS3ARI6 to my unlocked sprint s9 and still not vzw flashed. want to do this so can have voice over LTE. Any other steps im missing? flash went through but still sprint
As soon as Firmware ver. 3 came out for the G960U1, I was able to flash it to my Sprint G960U and finally have VoLTE, WiFi calling and stable LTE for MetroPCS. Used samkey to unlock it from Sprint. My phone is actually performing much faster without all of Sprint's bloatware hogging my RAM and storage space. I can confirm that OTA updates still work the same...I received September's security patch (current) with no problems. Device is still official status and Knox hasn't been tripped.
A lot of people think you can just flash the carrier firmware of your choice and boom, it works...I had the same thought process....that's not the case. You have to make sure that there is a matching firmware version for the carrier you want to flash to, as well as make sure the G960U1 firmware version (the unlocked version of the S9's software you have to flash first before even carrier flashing) is the same version of what is installed on your phone now. It's easy ya'll......just READ lol.
I'm in love with my phone again thanks to XDA. ?
HAPPY FLASHING!
nickosarus2008 said:
As soon as Firmware ver. 3 came out for the G960U1, I was able to flash it to my Sprint G960U and finally have VoLTE, WiFi calling and stable LTE for MetroPCS. Used samkey to unlock it from Sprint. My phone is actually performing much faster without all of Sprint's bloatware hogging my RAM and storage space. I can confirm that OTA updates still work the same...I received September's security patch (current) with no problems. Device is still official status and Knox hasn't been tripped.
A lot of people think you can just flash the carrier firmware of your choice and boom, it works...I had the same thought process....that's not the case. You have to make sure that there is a matching firmware version for the carrier you want to flash to, as well as make sure the G960U1 firmware version (the unlocked version of the S9's software you have to flash first before even carrier flashing) is the same version of what is installed on your phone now. It's easy ya'll......just READ lol.
I'm in love with my phone again thanks to XDA.
HAPPY FLASHING!
Click to expand...
Click to collapse
Hi, I got one unlocked G960U1(G960U1UES3ARI1) and downloaded new fireware(G960U1UES3ARI1-SPR) from sammobile, but after flashed SPR ROM successfully, the info on the phone still shows XAA, anything I missed here? Thanks!
Curtis2018 said:
Hi, I got one unlocked G960U1(G960U1UES3ARI1) and downloaded new fireware(G960U1UES3ARI1-SPR) from sammobile, but after flashed SPR ROM successfully, the info on the phone still shows XAA, anything I missed here? Thanks!
Click to expand...
Click to collapse
Well first off, you have the unlocked phone. I don't. My G960U is originally from Sprint, so I'm not sure about carrier flashing regarding the G960U1. I thought it was supposed to provision itself after you put the sim in, and the associated carrier apps will download since it's the unlocked model...but I may be wrong...
SEALBoy said:
I've read that the Galaxy S9 hardware is identical for all carriers in the USA.
If I bought a factory unlocked Galaxy S9 can I flash it to the carrier I am using (Verizon, Sprint, T-Mobile, AT&T) to enable carrier specific software and features? Can I flash it back to the unlocked firmware?
I already see a thread about flashing the unlocked firmware to carrier models so I am assuming there are no issues there.
Can one carrier model be flashed to another carrier model?
Click to expand...
Click to collapse
I know so many people have already answered your question from some saying No to others saying Yes but you need to Install U1 first and Bla Bla Bla.
I want to give you one specific answer: With S9 you can any Carriers firmware you wish or even Unlocked phone's firmware. You will never have any issue. And you don't ever need to flash U1 or something else before changing carrier firmware you can Flash from ATT S9 firmware to VZW S9 firmware without any issue. You can also flash from U to U1 which is from Carrier specific to Unbranded/Unlocked but only hiccup is original Odin will give you SHA-256 error, which is normal because you are flashing U1 firm to U device or vice versa. This error can easily be resolved by used Patched odin that disabled SHA-256 check. And trust me you will never have any issue.
You will never want to do this but I have gone as far as mix-matching U and U1 firmware together as well. Like flashing AP, BL and CP of U device but flashing CSC of U1 device. and it still works.
hey there, a little late to the party, having trouble with going from a Verizon to a Sprint, even by way of U1. I can't get any of them to work. And I've been told I have to go from VZW to U1 before I went to Sprint. Is that not the case? I'm having a hell of a time getting anything to flash, everything fails.
---------- Post added at 03:08 AM ---------- Previous post was at 02:57 AM ----------
ret4425 said:
hey there, a little late to the party, having trouble with going from a Verizon to a Sprint, even by way of U1. I can't get any of them to work. And I've been told I have to go from VZW to U1 before I went to Sprint. Is that not the case? I'm having a hell of a time getting anything to flash, everything fails.
Click to expand...
Click to collapse
well, I tried to load the Sprint image from the VZW, no dice. It said it passed, but upon reboot loaded up the old Big Red (even with the Sprint SIM in it).
Anyone have any ideas? This is driving me insane....

How can I update my unlocked AT&T S9 (SM-G960U)?

Hi. I have an AT&T-branded unlocked S9 (SM-G960U) and I have not been receiving software updates. The date of the installed security patch is Nov. 1, 2018, and I'm still on Android 8.0. When I check for updates, it says that my phone is up-to-date. My current carrier is outside the USA. I have also tried updating via Smart Switch but it also says my phone is up-to-date.
Is there any way I could get the Android Pie update?
Thanks for the help!
Ocelot584 said:
Hi. I have an AT&T-branded unlocked S9 (SM-G960U) and I have not been receiving software updates. The date of the installed security patch is Nov. 1, 2018, and I'm still on Android 8.0. When I check for updates, it says that my phone is up-to-date. My current carrier is outside the USA. I have also tried updating via Smart Switch but it also says my phone is up-to-date.
Is there any way I could get the Android Pie update?
Thanks for the help!
Click to expand...
Click to collapse
Flash with odin and get the firmware from sammobile or Frija app on xda
Instructions all over XDA and sammobile
*Detection* said:
Flash with odin and get the firmware from sammobile or Frija app on xda
Instructions all over XDA and sammobile
Click to expand...
Click to collapse
Frija??
aaronisham95 said:
Frija??
Click to expand...
Click to collapse
https://forum.xda-developers.com/galaxy-s9/how-to/tool-frija-samsung-firmware-downloader-t3910584
*Detection* said:
Flash with odin and get the firmware from sammobile or Frija app on xda
Instructions all over XDA and sammobile
Click to expand...
Click to collapse
I have considered using Odin but I can't find the AT&T firmware on Sammobile :/
Ocelot584 said:
I have considered using Odin but I can't find the AT&T firmware on Sammobile :/
Click to expand...
Click to collapse
You can use the U1 firmware (Unbranded) you don't need the carrier one, any for the U will work, and U1
*Detection* said:
You can use the U1 firmware (Unbranded) you don't need the carrier one, any for the U will work, and U1
Click to expand...
Click to collapse
When I check out the U1 firmwares, I see different variants listed (ATT, TMB, etc.). As you said, the U1 firmware is unbranded, so why are there carrier-specific variants?
Ocelot584 said:
When I check out the U1 firmwares, I see different variants listed (ATT, TMB, etc.). As you said, the U1 firmware is unbranded, so why are there carrier-specific variants?
Click to expand...
Click to collapse
XAA is the one you want for unbranded, all the info you need is already here on XDA
https://forum.xda-developers.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200/page10
Ocelot584 said:
When I check out the U1 firmwares, I see different variants listed (ATT, TMB, etc.). As you said, the U1 firmware is unbranded, so why are there carrier-specific variants?
Click to expand...
Click to collapse
*Detection* said:
XAA is the one you want for unbranded, all the info you need is already here on XDA
https://forum.xda-developers.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200/page10
Click to expand...
Click to collapse
in short, the U1 is a debloated version of stock without the carrier junk. The different iterations will have different modem files that are intended to work best with the respective markets they are built for, globally speaking. Samsung stopped making a separate version for the GSM carriers in the USA with the S8 which is why all the stock image files are now cross compatible. They technically always were, its just that theyre far more interchangable now due to this physical difference no longer existing
*Detection* said:
XAA is the one you want for unbranded, all the info you need is already here on XDA
https://forum.xda-developers.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200/page10
Click to expand...
Click to collapse
Thanks! :good:
youdoofus said:
in short, the U1 is a debloated version of stock without the carrier junk. The different iterations will have different modem files that are intended to work best with the respective markets they are built for, globally speaking. Samsung stopped making a separate version for the GSM carriers in the USA with the S8 which is why all the stock image files are now cross compatible. They technically always were, its just that theyre far more interchangable now due to this physical difference no longer existing
Click to expand...
Click to collapse
So do you mean that the different carrier versions of U1 firmware don't have carrier apps, but have files that make the phone more compatible with the carrier's network?
It seems as though AT&T can only send updates over their network, which I don't have access to because I'm outside the US. If I change my firmware to U1, would I then receive updates OTA in the future directly from Samsung?
Ocelot584 said:
It seems as though AT&T can only send updates over their network, which I don't have access to because I'm outside the US. If I change my firmware to U1, would I then receive updates OTA in the future directly from Samsung?
Click to expand...
Click to collapse
Yes
Ocelot584 said:
So do you mean that the different carrier versions of U1 firmware don't have carrier apps, but have files that make the phone more compatible with the carrier's network?
Click to expand...
Click to collapse
they have very minimal bloatware, they might include carrier apps, but very few. They usually have carrier specific radio firmware to allow the phone to operate best on that specific network, yes.
i would flash one in the very near future myself, but im about to head to Mexico on vacation, so im a tad paranoid to do so. Ill do it when i get back tho. By the end of this month, ill be running a U1 firmware set
Hey guys hope u r all good I'm new on this forum so can anyone please help me
So I have a Tmobile carrier locked samsung s9 (SM-G960U) and I also checked that can I unlock it officially and it says Tmobile have a device unlock app which unlock your phone by permanently unlocking it i searched my app and I had the Device unlock app from Tmobile i opened the app and followed the instructions and when I clicked permanent unlock it took some time and after few secs I said unlocked approved u have to restart your device to apply changes and when I restarted the phone the device unlock app was disabled by itself and my device was still carrier locked and when I re-enable the app from app manager it said it said u have to restart your device again the charges has not been done i tried it again but it goes in loop i also factory reset my device and tried but its still the same . So the question is can I install a global firmware or an unlocked firmware on my s9 (SM-G960U) or how can I unlock the device officially cuz I checked the phone its is not blacklisted and fully paid so what should I do plz help and I'm from Pakistan do I can't go to a Tmobile store coz we don't have there service here . Thanks
Edit : and can you guys also tell me if I'm willing to flash my s9 to an unlocked firmware do I need to enable oem unlocking if yes then how can l enable it I don't have the oem unlock option in my Developer mode
Sam1246 said:
Hey guys hope u r all good I'm new on this forum so can anyone please help me
So I have a Tmobile carrier locked samsung s9 (SM-G960U) and I also checked that can I unlock it officially and it says Tmobile have a device unlock app which unlock your phone by permanently unlocking it i searched my app and I had the Device unlock app from Tmobile i opened the app and followed the instructions and when I clicked permanent unlock it took some time and after few secs I said unlocked approved u have to restart your device to apply changes and when I restarted the phone the device unlock app was disabled by itself and my device was still carrier locked and when I re-enable the app from app manager it said it said u have to restart your device again the charges has not been done i tried it again but it goes in loop i also factory reset my device and tried but its still the same . So the question is can I install a global firmware or an unlocked firmware on my s9 (SM-G960U) or how can I unlock the device officially cuz I checked the phone its is not blacklisted and fully paid so what should I do plz help and I'm from Pakistan do I can't go to a Tmobile store coz we don't have there service here . Thanks
Edit : and can you guys also tell me if I'm willing to flash my s9 to an unlocked firmware do I need to enable oem unlocking if yes then how can l enable it I don't have the oem unlock option in my Developer mode
Click to expand...
Click to collapse
https://www.t-mobile.com/responsibility/consumer-info/policies/sim-unlock-policy
Please read this, there might be some restrictions still applied to your phone.
Unlock app requires a TMobile account at least.

Flashing Verizon Samsung Note 10 plus N975U to U1 Firmware

Hi guys I got a Verizon N975U note 10 plus and its stuck on Verizon I'm trying to flash it with U1 so I can pop a sim in and changes it to that carrier. Do I just need to flash it with the U1 file here https://androidfilehost.com/?w=files&flid=297980 or will it need something special the build # is SQS2ASJ8
johntudd said:
Hi guys I got a Verizon N975U note 10 plus and its stuck on Verizon I'm trying to flash it with U1 so I can pop a sim in and changes it to that carrier. Do I just need to flash it with the U1 file here https://androidfilehost.com/?w=files&flid=297980 or will it need something special the build # is SQS2ASJ8
Click to expand...
Click to collapse
Can't say for sure it would work on U firmware (lack of first hand experience to verify) as it would for U1.... As long as the phone is network/sim unlocked then you should be able to just put the new sim card in it (and the phone will read the sim card settings and apply them).
Flashing the U1 firmware instructions on flashing U1 firmware have been at link below (bottom of first post). You can get the firmware from that thread also.
https://forum.xda-developers.com/showpost.php?p=80072192&postcount=1
Of course keep in mind that none of this will matter unless the phone is sim/network unlocked. As long as you meet the requirements from Verizon (or the phone was blacklisted for either non payment, lost/stolen or a warranty/insurance exchange that wasn't sent in) then this shouldn't be an issue.
its locked to Verizon at the moment when I put a sim in it will work for a bit then say its not allowed to use another carriers sim at this time.
johntudd said:
its locked to Verizon at the moment when I put a sim in it will work for a bit then say its not allowed to use another carriers sim at this time.
Click to expand...
Click to collapse
Either wait until the phone is able to be unlocked by Verizon, or call them and request that they unlock it for you. Until that happens you will not be able to use a non-verizon sim card.
I would also advise keeping the U firmware for Verizon installed and not flashing the U1 firmware, as the Verizon sim/network unlock requires the carrier firmware... At least that is what I am gathering from various discussions/threads.
johntudd said:
Hi guys I got a Verizon N975U note 10 plus and its stuck on Verizon I'm trying to flash it with U1 so I can pop a sim in and changes it to that carrier. Do I just need to flash it with the U1 file here https://androidfilehost.com/?w=files&flid=297980 or will it need something special the build # is SQS2ASJ8
Click to expand...
Click to collapse
Is your phone carrier locked to Verizon? Has it been activated on Verizon's service for 30 days? If not, I'm pretty sure firmware flashing won't help anything. I'm on a Verizon MVNO and they wouldn't even unlock it for me to use on their own network. I had to activate with them for 30 days.
However, now that mine is unlocked, it's still locked down to Verizon in a lotof ways. My SIM card for my current carrier can't apply an APN, for example, so I have to do it manually. I'm contemplating flashing U1 to fix that issue (I hope).
I have a very similar situation. I bought a Note 10+ N975U (Verizon Unlocked) and I want to take it to U1 and then maybe to Sprint. I tried to go to the OP here and follow instructions. So I downloaded and selected all the files for U1 and apparently I did the "no-no" and got stopped with the SW Rev Check Fail : abl Fused 2 > Binary 1. I looked at what my phone is on and it is the SJ8 (November?) from Verizon. I'm guessing that means the BL file (bootloader?) in the U1 folder (SGO?) is older than what is on my phone? What do I need to do differently? I already tried without selecting the BL file, but it still gives the same error. Any help is appreciated! Thanks in advance!
baumanbt said:
I have a very similar situation. I bought a Note 10+ N975U (Verizon Unlocked) and I want to take it to U1 and then maybe to Sprint. I tried to go to the OP here and follow instructions. So I downloaded and selected all the files for U1 and apparently I did the "no-no" and got stopped with the SW Rev Check Fail : abl Fused 2 > Binary 1. I looked at what my phone is on and it is the SJ8 (November?) from Verizon. I'm guessing that means the BL file (bootloader?) in the U1 folder (SGO?) is older than what is on my phone? What do I need to do differently? I already tried without selecting the BL file, but it still gives the same error. Any help is appreciated! Thanks in advance!
Click to expand...
Click to collapse
The bootloader of the U1 firmware you were trying to flash is lower then what is currently on your phone. So yes you are correct that is the no-no. Also you can not skip the bootloader file when flashing, so that wouldn't have worked.
If you read through that thread you will have found others asking how to go from U to U1 firmware. Also the error within regards to trying to flash a lower bootloader version firmware was also asked and answered. I would encourage you to browse that thread and the Q&A forum because this process has been discussed on more then one occasion... It might contain helpful/useful info for you.
In short you need to get a newer firmware release. Using samfirm or frija apps, or the sammobile website look for the firmware your seeking. Google searching will show you how to obtain samfirm, frija is posted the forum here if I recall correctly.
For U1 the model is SM-N975U1 and the region is XAA.

Question Updating s22 SD (s901u)

Hi all. I am from Singapore and I have gotten a s22 off an online platform here only to discover it is a USA set.
The csc is S901UOYN2AVE4
I am unable to get ota updates and am still stuck with a may 2022 android 12 update while checking updates shows as up to date.
I have some questions after doing a Google search.
1) will I be able to get ota updates? Does this mean I have to somehow change to csc and is this possible?
2) if it is not, do I have to update manually thru Odin patched? Given the above csc, can anyone guide me as to which firmware can I use? I see there are many different ones from different carriers like Verizon or t mobile
Thanks in advance!
were you able to find a solution? I am also facing the same issue
None so far.
Have you guys tried smartswitch?
hello! I have also researched a bit & came to this conclusion. The device was possibly under a carrier (such as ATT or Verizon) from the US. Although it's unlocked and you can use any sim card but you won't receive any updates unless you use the sim card of that particular carrier. You can install the latest firmware using ODIN tool yourself by downloading firmware based on CSC region code. You can youtube to find the specific CSC region of your phone. Please let me know if you find any other solution. & also please let me know what 'service provider software version' is on your device. you can find it at About phone>Software Information
KingpinDXO said:
Have you guys tried smartswitch?
Click to expand...
Click to collapse
Smart switch doesnt work I've tried it.
KingpinDXO said:
hello! I have also researched a bit & came to this conclusion. The device was possibly under a carrier (such as ATT or Verizon) from the US. Although it's unlocked and you can use any sim card but you won't receive any updates unless you use the sim card of that particular carrier. You can install the latest firmware using ODIN tool yourself by downloading firmware based on CSC region code. You can youtube to find the specific CSC region of your phone. Please let me know if you find any other solution. & also please let me know what 'service provider software version' is on your device. you can find it at About phone>Software Information
Click to expand...
Click to collapse
I have managed to flash it with the right software and get it to update ota. To test this I flashed a older android 12 firmware and it manages to update to android 13 ota.
Follow the steps in this thread closely and you will be good. Use the unlocked u1 version firmware.
https://www.reddit.com/r/GalaxyS22/comments/t49c10
Just to confirm one thing, My CSC is S901UOYN2AVE4 and AP/CP/BASEBAND is S901USQU2AVE4. Csc is basically same as you.
But my service provider software version is SAOMC_SM_S901U_OYN_GCF_12_0002
GCF/GCF, GCF/XAA.
Will it alright to flash u1 unlocked firmware to the device? This software version shouldn't be an issue right?
KingpinDXO said:
Just to confirm one thing, My CSC is S901UOYN2AVE4 and AP/CP/BASEBAND is S901USQU2AVE4. Csc is basically same as you.
But my service provider software version is SAOMC_SM_S901U_OYN_GCF_12_0002
GCF/GCF, GCF/XAA.
Will it alright to flash u1 unlocked firmware to the device? This software version shouldn't be an issue right?
Click to expand...
Click to collapse
My ap and CSC same as yours. So yes I am pretty sure you can flash the u1. Download the xaa version.

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