Samsung Galaxy s9 Demo Security Error - Samsung Galaxy S9 Questions & Answers

Hello! This is my first post on any forum ever, so please be gentle.
Recently I dumpster dove behind a U.S. Cellular that had just gone out of business and I found this neat Samsung Galaxy S9 Live Demo phone. It was originally flashed with an SM-G960XU Firmware, but I wanted to de-demo mode it, so I thought I would flash an SM-G960U firmware on it instead.
This failed miserably and I now have the following error: "Security Error: This phone has been flashed with unauthorized software...". A picture of the error, as well as the other information I have been able to glean from the locked phone is attached.
Unfortunately, I knew nothing about androids before attempting to flash the phone, so I have no other data about the phone other than what is in the pictures.
Any help would be greatly appreciated.
Thank you very much,
Oronto

Meh... you have a parts queen, less the mobo.

Demo unit should be missing the baseband chip hardware inside, so even if you could flash the stock firmware you would be limited to using it with wifi.
Apart from that, what happens if you try to flash again with odin? i would try flashing the precedent firmware G960XU

effry said:
Demo unit should be missing the baseband chip hardware inside, so even if you could flash the stock firmware you would be limited to using it with wifi.
Apart from that, what happens if you try to flash again with odin? i would try flashing the precedent firmware G960XU
Click to expand...
Click to collapse
Hi effry,
Thank you for your response. I would love to reflash it with its original firmware but I can’t find it anywhere on the internet! I did not realize I was supposed to back up the firmware before flashing it which was quite the mistake. Do you happen to know where I might be able to find this firmware?
Thank you very much,
Oronto

Start from here and check the exact phone model with the IMEI, it is printed on the bottom of the back of the phone (use a strong light, it's a small and light text)
Check Samsung IMEI information in SamFw.com
You can check Samsung IMEI information like Model, Region. And you can choose the exact firmware
samfw.com
After that you can use the same site to search for the correct firmware , donwload it and flash it with Odin

blackhawk said:
Meh... you have a parts queen, less the mobo.
Click to expand...
Click to collapse
Hi Blackhawk,
Thanks for the response. What do you mean by a parts queen? Do you mean I should sell it for parts on eBay?
Thanks,
Oronto

Oronto said:
Hi Blackhawk,
Thanks for the response. What do you mean by a parts queen? Do you mean I should sell it for parts on eBay?
Thanks,
Oronto
Click to expand...
Click to collapse
A hangar queen is the actual terminology. An aircraft used for donor parts to keep others flying.
The display, frame, battery, C port pcb, cam module should be good. The mobo is useless for use as a phone except as noted with wifi.
So if you have another phone of the same model... you now have an Android queen

effry said:
Start from here and check the exact phone model with the IMEI, it is printed on the bottom of the back of the phone (use a strong light, it's a small and light text)
Check Samsung IMEI information in SamFw.com
You can check Samsung IMEI information like Model, Region. And you can choose the exact firmware
samfw.com
After that you can use the same site to search for the correct firmware , donwload it and flash it with Odin
Click to expand...
Click to collapse
Hi effry,
Thank you again! I input the model’s serial number into the website you linked and it returned that the firmware is SM-G960XZKUXAR. Unfortunately, that website doesn’t have the firmware that it tells me the phone is supposed to have. I checked elsewhere on the internet but I can’t seem to find it. Is there an obscure website you know of that might have it?
Alternatively, do you think it is possible that I could flash it with another equivalent firmware? If so, what might you suggest?
Thank you very much,
Oronto

blackhawk said:
A hangar queen is the actual terminology. An aircraft used for donor parts to keep others flying.
The display, frame, battery, C port pcb, cam module should be good. The mobo is useless for use as a phone except as noted with wifi.
So if you have another phone of the same model... you now have an Android queen
Click to expand...
Click to collapse
Hi blackhawk,
Thank you for your insight into which parts seem useful for scrapping. It is looking like I might have to do that. Unfortunately, I do not have an equivalent model, so I will have to sell it for parts if it comes down to that.
Thanks again,
Oronto

Oronto said:
Hi effry,
Thank you again! I input the model’s serial number into the website you linked and it returned that the firmware is SM-G960XZKUXAR. Unfortunately, that website doesn’t have the firmware that it tells me the phone is supposed to have. I checked elsewhere on the internet but I can’t seem to find it. Is there an obscure website you know of that might have it?
Alternatively, do you think it is possible that I could flash it with another equivalent firmware? If so, what might you suggest?
Thank you very much,
Oronto
Click to expand...
Click to collapse
By looking online it seems that flashing the firmware with odin should fix the issue. Maybe you did something wrong in the process? i would try another odin flash using this firmware
Download Galaxy S9 SM-G960U (XAS) G960USQS9FUG2 in Samfw - Samsung firmware download
Galaxy S9 SM-G960U (XAS - United States) G960USQS9FUG2 Q(Android 10) samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅
samfw.com

If it doesn't work, i found the SM-G960X files here, this should be the full DEMO firmware
G960XUSQU3CSAB-(VZW)(Firmware 5 Files + USERDATA) (Android 9 Pie) File By (www.needromarab.Com).zip
drive.google.com
There are also some interesting download here, they say to be the complete firmware but for some reason they are just 1 gb size instead of 4.4gb like the others so i don't know
Samsung SM-G960X Combination File ROM (Flash File)
Download Samsung SM-G960X Combination File (original flash file, rom) without any password for Free. We also provide the combination file for all Samsung devices.
samsungcombinationfile.com

effry said:
If it doesn't work, i found the SM-G960X files here, this should be the full DEMO firmware
G960XUSQU3CSAB-(VZW)(Firmware 5 Files + USERDATA) (Android 9 Pie) File By (www.needromarab.Com).zip
drive.google.com
There are also some interesting download here, they say to be the complete firmware but for some reason they are just 1 gb size instead of 4.4gb like the others so i don't know
Samsung SM-G960X Combination File ROM (Flash File)
Download Samsung SM-G960X Combination File (original flash file, rom) without any password for Free. We also provide the combination file for all Samsung devices.
samsungcombinationfile.com
Click to expand...
Click to collapse
Hi effry,
Thank you very much for all of these options! I will try them all when I get home and let you know if I have any success.
Thanks again,
Oronto

effry said:
If it doesn't work, i found the SM-G960X files here, this should be the full DEMO firmware
G960XUSQU3CSAB-(VZW)(Firmware 5 Files + USERDATA) (Android 9 Pie) File By (www.needromarab.Com).zip
drive.google.com
There are also some interesting download here, they say to be the complete firmware but for some reason they are just 1 gb size instead of 4.4gb like the others so i don't know
Samsung SM-G960X Combination File ROM (Flash File)
Download Samsung SM-G960X Combination File (original flash file, rom) without any password for Free. We also provide the combination file for all Samsung devices.
samsungcombinationfile.com
Click to expand...
Click to collapse
Hello again effry,
I tried your firmwares and bad things have happened. It got to where the download was almost finished and then it displayed this error. Unfortunately Smart Switch Emergency Software Recovery does not register it as connected.
I believe I am boned. Thoughts on this?
Thanks,
Oronto

Oronto said:
Hello again effry,
I tried your firmwares and bad things have happened. It got to where the download was almost finished and then it displayed this error. Unfortunately Smart Switch Emergency Software Recovery does not register it as connected.
I believe I am boned. Thoughts on this?
Thanks,
Oronto
Click to expand...
Click to collapse
You could just replace the motherboard from Ebay for around 50 bucks (USD). Make sure it's a regular unlocked version (both FRP and network), any carrier will do since you can cross flash any firmware of your choice (no need for the demo anymore). Just a heads up, demo units sometimes are missing some of the LTE antenna cables/connectors, which would prevent the good replacement main board from working on cellular.

billa said:
You could just replace the motherboard from Ebay for around 50 bucks (USD). Make sure it's a regular unlocked version (both FRP and network), any carrier will do since you can cross flash any firmware of your choice (no need for the demo anymore). Just a heads up, demo units sometimes are missing some of the LTE antenna cables/connectors, which would prevent the good replacement main board from working on cellular.
Click to expand...
Click to collapse
Hi billa,
Thanks for the advice. I’ll look into it, but I might end up just selling it for parts.
Thanks,
Oronto

Related

Chinese Galaxy Y, how do I change the operating system?

Hi everyone,
Have just purchased a new Galaxy Y here in China and restored to original factory settings however everything is in Chinese which isn't a problem as I can change the language to English however all the default Google Apps are missing and replaced with Chinese equivalents it seems so I'm unable to use them.
So... how can I restore it to a version of Android something functional for me? I'm on mac os x lion with vmware for any windows apps I need and am computer literate enough to attempt anything like flashing a device / updating a rom but have no idea where to start with this. Have read some docs on Odin but they made little sense at first because I don't quite know what steps I need to take in order to carry out this task. I've found various Roms but these are India, Netherlands, Greece versions, does anyone know of a UK version?
Any pointers would help greatly, thanks in advance!
Update: Just came across http://forum.xda-developers.com/showthread.php?t=1465800 so am reading through here however I'm not sure which ROM to go for, the European pack work with sim cards in Asia?
Rich
first thing that the initial setup offers after full reset, is to change the language. It's the button on the the right hand side of the screen. if you press the green android, it's too late. then you must navigate to language setup by memory.
mai77 said:
first thing that the initial setup offers after full reset, is to change the language. It's the button on the the right hand side of the screen. if you press the green android, it's too late. then you must navigate to language setup by memory.
Click to expand...
Click to collapse
I've changed the language but it's a custom Chinese rom as China bans everything google so I need to get it on a normal UK Android setup or something, maybe the European pack from the aforementioned link?
Current versions as follows:
PDA: S5360ZCKK2
PHONE: S5360ZCKK2
CSC: S5360ZHKK2
richd86 said:
I've changed the language but it's a custom Chinese rom as China bans everything google so I need to get it on a normal UK Android setup or something, maybe the European pack from the aforementioned link?
Current versions as follows:
PDA: S5360ZCKK2
PHONE: S5360ZCKK2
CSC: S5360ZHKK2
Click to expand...
Click to collapse
Try and check Docky stock Rom under android development. He has european firmware. Flash it via Odin. There are guide how to flash via Odin in his thread if im not mistaken. Hope it helps.
Sent from my GT-S5360 using XDA App
axilefoo said:
Try and check Docky stock Rom under android development. He has european firmware. Flash it via Odin. There are guide how to flash via Odin in his thread if im not mistaken. Hope it helps.
Sent from my GT-S5360 using XDA App
Click to expand...
Click to collapse
Thank you for this, am just looking at Docky's stock roms now. Seems like the phone isn't locked to any specific network as accepts both Hong Kong and UK sim cards at the moment. I'm a little confused about setting the CSC and provider/region stuff after flashing it, basically I'm in Asia for the next 10 months and will have various sim cards from different countries and want them all to work. Possible do you think? Or will I have to flash to country specific firmware/csc relative to the sim card I'm inserting?
richd86 said:
Thank you for this, am just looking at Docky's stock roms now. Seems like the phone isn't locked to any specific network as accepts both Hong Kong and UK sim cards at the moment. I'm a little confused about setting the CSC and provider/region stuff after flashing it, basically I'm in Asia for the next 10 months and will have various sim cards from different countries and want them all to work. Possible do you think? Or will I have to flash to country specific firmware/csc relative to the sim card I'm inserting?
Click to expand...
Click to collapse
Well, Im in Asia country too. I tried Docky's Custom ROM which is based on XX which is European firmware and my phone works together with the SIM provider and network. So, the CSC is basically the language supported by your phone (based on my experience). Thus, Im sure you can use European firmware when you are in Asia country
axilefoo said:
Well, Im in Asia country too. I tried Docky's Custom ROM which is based on XX which is European firmware and my phone works together with the SIM provider and network. So, the CSC is basically the language supported by your phone (based on my experience). Thus, Im sure you can use European firmware when you are in Asia country
Click to expand...
Click to collapse
Small world hehe I'm currently downloading S5360_XXLA2_OXXLA2_XXLA2_by_Doky.zip which seems to be the latest european multilingual build so hopefully that will do the trick. I'll let you know how I get on, thanks for the tips.
richd86 said:
Small world hehe I'm currently downloading S5360_XXLA2_OXXLA2_XXLA2_by_Doky.zip which seems to be the latest european multilingual build so hopefully that will do the trick. I'll let you know how I get on, thanks for the tips.
Click to expand...
Click to collapse
Cool. Cant wait to hear from you soon. Good luck
I think the simpliest way to solve this is to update its firmware via samsung kies, besides its the official update you can get and you'll be sure it'll be safe. Ive updated mine through this method and havent tried the ODIN thing. Good luck though
axilefoo said:
Cool. Cant wait to hear from you soon. Good luck
Click to expand...
Click to collapse
Woo hoooo I have a working phone, or should I say a phone which I can understand. It took a while because I couldn't find a decent internet connection where I was but having found one the process, following Doky's instructions, was painless - what a result! Thanks for your help!
richd86 said:
Woo hoooo I have a working phone, or should I say a phone which I can understand. It took a while because I couldn't find a decent internet connection where I was but having found one the process, following Doky's instructions, was painless - what a result! Thanks for your help!
Click to expand...
Click to collapse
No problem! Enjoy
Asian driver for Galaxy Young ?
richd86 said:
Woo hoooo I have a working phone, or should I say a phone which I can understand....
Click to expand...
Click to collapse
Hi,
I really appreciate all the posting which is done on this site, and it has helped me many times (as I often act as the 'family' technician who can fix things).
But this time, I inherited a bricked Vietnamese Galaxy Young. The issue I have is that event though I installed ODIN in its most recent release, the phone in DOWNLOAD mode is not recognized on the 2 computers I usually use on other Samsung phones.
Is there an Asian-specific driver which needs to be used?
Alas, the phone was backed up using the CWM backup, but it refuses to boot into CWM (just hangs at logo). The only mode it boots into is Downlaod mode. But it need to be recognized correctly before Odin can do anything
Thanks for suggestions
Marc, from France
mwrmwr said:
Hi,
I really appreciate all the posting which is done on this site, and it has helped me many times (as I often act as the 'family' technician who can fix things).
But this time, I inherited a bricked Vietnamese Galaxy Young. The issue I have is that event though I installed ODIN in its most recent release, the phone in DOWNLOAD mode is not recognized on the 2 computers I usually use on other Samsung phones.
Is there an Asian-specific driver which needs to be used?
Alas, the phone was backed up using the CWM backup, but it refuses to boot into CWM (just hangs at logo). The only mode it boots into is Downlaod mode. But it need to be recognized correctly before Odin can do anything
Thanks for suggestions
Marc, from France
Click to expand...
Click to collapse
make sure samsung usb drivers are installed - use rear usb ports not front ones and you can try a different usb cable (there is no specific regional driver just a generic samsung usb driver)
once in download mode connect usb cable to pc
push vol up on phone to start connection (wait a 30 secs in case drivers start installing)
open odin 3.07
if it is connected it will say com then a number in a coloured box under com:id on the left hand side

N975F Early Access Combination (Factory) and Retail Firmware Link

- The one labeled Factory is the Combination file; the other one is consumer/retail firmware
- As with other current devices, I'm assuming that "Odin 3.13 3b patched" will be needed in order to flash the stock firmware, and that the Combination file will fail to flash, until a method is found
- Once the device is released, retail firmware will be available via SamFirm and other sources, so I'm really only providing this now as early access, for anyone that wants to dig in and play around and see what they can find, etc
- I compress 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 flashing!
https://www.androidfilehost.com/?w=files&flid=297936
There's a working firmware released already.
Thanks for the Combination ROM.
Cheers.
JazonX said:
There's a working firmware released already.
Thanks for the Combination ROM.
Cheers.
Click to expand...
Click to collapse
did you flash combination?
iBowToAndroid said:
- The one labeled Factory is the Combination file; the other one is consumer/retail firmware
- As with other current devices, I'm assuming that "Odin 3.13 3b patched" will be needed in order to flash the stock firmware, and that the Combination file will fail to flash, until a method is found
- Once the device is released, retail firmware will be available via SamFirm and other sources, so I'm really only providing this now as early access, for anyone that wants to dig in and play around and see what they can find, etc
- I compress 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 flashing!
https://www.androidfilehost.com/?w=files&flid=297936
Click to expand...
Click to collapse
Thanks my dear, I am not sure if this will fix my problem, but I feel it will, I lost the EFS file by mistake and lost the IMEI.
Best Regards
tarik2 said:
Thanks my dear, I am not sure if this will fix my problem, but I feel it will, I lost the EFS file by mistake and lost the IMEI.
Best Regards
Click to expand...
Click to collapse
Hello There
Did it fix your issue?
Tarar said:
Hello There
Did it fix your issue?
Click to expand...
Click to collapse
Hi,
No, I tried a lot to install it but since Samsung S10 and above Samsung made a special security things to stop us installing the Combination ROM, I used all available methods like TWRP but the ROM never boot, but you can see my fix here: https://forum.xda-developers.com/ga...nt/fixed-repair-imei-fix-deleted-efs-t4011433
Tarar said:
Hello There
Did it fix your issue?
Click to expand...
Click to collapse
I am still trying, please check https://forum.xda-developers.com/galaxy-note-10+/help/n975f-restarting-flashing-combination-t4063557
I've figured out how to do it.
Not free though
can someone find Combination (Factory) for N9750 with U2 N9750ZSU2CTD1 or N9750ZSU2BTC1 firmwares.
I got FRP lock after instalation last firmware with root. Cant enter in recovery, load only in download mode

Samsung s9 stock rom question.

Hey guys, how are you doing.
I need your help, because i have a samsung s9 (SM-G960F) which is in a bootloop. I am trying to install a stock rom, but with all the ones that i have tried, odin has either got stuck on keystorage.img or, it has given me a secure check fail. As this occured inexpectedly, i don't know my csc code, so if any of you could find it, i will pay well.
Also, i have tried different odin version, all with the same result. And i tried all of the spanish softwares (because i am spanish)
my imei is 353467/10/733728/3
in download mode it says that FRP LOCK is on, Also OEM LOCK is too.
Thank you very much
falonsoperal said:
Hey guys, how are you doing.
I need your help, because i have a samsung s9 (SM-G960F) which is in a bootloop. I am trying to install a stock rom, but with all the ones that i have tried, odin has either got stuck on keystorage.img or, it has given me a secure check fail. As this occured inexpectedly, i don't know my csc code, so if any of you could find it, i will pay well.
Also, i have tried different odin version, all with the same result. And i tried all of the spanish softwares (because i am spanish)
my imei is 353467/10/733728/3
in download mode it says that FRP LOCK is on, Also OEM LOCK is too.
Thank you very much
Click to expand...
Click to collapse
where did you get your firmware from? try a fresh download of the firmware, the most current version of Odin, maybe try a different cable (this isnt a likely culprit) and finally a different computer. Those are basically the only things you can do in situations like these. if it was me, i would absolutely download a fresh firmware from sammobile and flash it as a first step. The sammobile link brings you to a page where you can select your country. You should be able to flash whatever countries firmware you want, but its best to flash the one that it was originally built with. You can look that up with the IMEI if you still have the box or the sticker on the back of the phone itself. Also, im thinking it could easily be the version of Odin youre using as they can be very finicky.
i littered an entire box of links in that reply for some odd reason. im bored
Edit:
also, i see this is your first post, so WELCOME to the forum!
Edit 2: i promise im gonna stop editing this post... eventually
Thx
thank you man, i will try that. quick question, is SAMFW.COM reliable? because i have been downloading the firmware from there
falonsoperal said:
thank you man, i will try that. quick question, is SAMFW.COM reliable? because i have been downloading the firmware from there
Click to expand...
Click to collapse
If you have windows. Use frija it's so much better than the rest. And it is fast
TheMadScientist said:
If you have windows. Use frija it's so much better than the rest. And it is fast
Click to expand...
Click to collapse
Frija and SamFirm are godsends! I have and use them both and i find them to be identical in speed.

Samsung galaxy S20 Ultra Super Image needed?

Hi,
Can anyone help... I bricked my S20 Ultra SM-G9880 and tried using odin3 to flash firmware but it is asking for the Super Image so fails the process.
It say on screen; An error has occurred while updating the device software. Use the emergency recovery function in the smart switch PC software but when I download this it says the S20 is not compatible.
Please can anyone help it was a lot of money?
[email protected] said:
Hi,
Can anyone help... I bricked my S20 Ultra SM-G9880 and tried using odin3 to flash firmware but it is asking for the Super Image so fails the process.
It say on screen; An error has occurred while updating the device software. Use the emergency recovery function in the smart switch PC software but when I download this it says the S20 is not compatible.
Please can anyone help it was a lot of money?
Click to expand...
Click to collapse
first off, what did you do to brick an expensive phone? Is it because you can't wait for the update to come along that you tried switching different Firmware without back reading some threads beforehand?? i'm not here to offend you or belittle you, in fact we have the same device and variant, HK- SM-G9880 to be precise.
mimsiroll said:
first off, what did you do to brick an expensive phone? Is it because you can't wait for the update to come along that you tried switching different Firmware without back reading some threads beforehand?? i'm not here to offend you or belittle you, in fact we have the same device and variant, HK- SM-G9880 to be precise.
Click to expand...
Click to collapse
I was trying to change rom to HK instead of Taiwan because I thought it might get rid of the chinese writing and be more western friendly... Wasn't really thinking... it was an expensive mistake.
Is there away to fix?
[email protected] said:
I was trying to change rom to HK instead of Taiwan because I thought it might get rid of the chinese writing and be more western friendly... Wasn't really thinking... it was an expensive mistake.
Is there away to fix?
Click to expand...
Click to collapse
You probably have to read this topic about samkey so just dig this thread and read about the samkey. How it can fix your phone depends on what youll choose otherwise i can still suggest using samsung switch from pc and do an emergency installation but as always find a topic about it first and do the most suitable thing for you.
https://forum.xda-developers.com/galaxy-s20/how-to/free-csc-change-apk-s20-t4116015
really? lol
hes not brick bricked.. that screen is an odin download mode screen.. he can simple use odin to reflash stock firmware to the device lol
elliwigy said:
really? lol
hes not brick bricked.. that screen is an odin download mode screen.. he can simple use odin to reflash stock firmware to the device lol
Click to expand...
Click to collapse
Hi thanks for comment... I flashed odin but it didn't remove lock. Maybe because it is a modern phone? I have given it to a local phone repair shop so hopefully they will fix for me.
[email protected] said:
Hi thanks for comment... I flashed odin but it didn't remove lock. Maybe because it is a modern phone? I have given it to a local phone repair shop so hopefully they will fix for me.
Click to expand...
Click to collapse
dunno wat lock u mean
Hi Folks,
I posted this thread and just wanted to thank everyone who offered advice. I have managed to fix the phone now.
I flashed latest firmware with Odin and included .PIT file i extract from the CSC file.
So pleased to have it back!
Many thanks to @[email protected], this method worked as a charm.

Tried to flash G988W firmware onto my G988U1 phone. SIM card not recognized

I live in Canada. I purchased an S20 Ultra off a seller on Canadian best buy (open box). I assumed it'd be a Canadian variant, but it was an unlocked US version (U1 firmware). OK whatever, but it meant my Samsung Pay doesn't work, along with a few other calling features.
I downloaded the patched Odin, downloaded the G988W firmware (with XAC CSC) with Frija, added the appropriate files to Odin (used Home CSC), and flashed it. The flashing itself went fine, but when I went to re-insert my SIM...nothing. It didn't even error out and say "No SIM Detected", I just had no coverage, and in SIM manager, both slots were empty.
Freaked out, and eventually flashed back to G988U1/XAA and thank Christ it works now. But my question is...why?
I dug though this forum before doing it to try and anticipate any issues. Followed the instructions to the letter, nowhere said this would be an issue. Couldn't even find any relevant support questions for this issue on this model. Not sure if it's a new development, but I absolutely don't want to risk messing my phone up further if I reattempt.
Bonus question: My CSC info is: XAA/XAA,XAA/SPR. Does that mean that it was originally a Sprint model phone, someone's flashed the firmware to an unbranded version, then sold it off as New (Open Box)?
You can't just flash a firmware from a different phone. The hardware is different, so the way to communicate with it is different. You're lucky it even booted, I wouldn't have expected that even. You're simply stuck with the original firmware and CSC list. Or, maybe you could try with custom ROMS but I wouldn't be so sure about it. Either way, you'll have to use a ROM/firmware that is built for your phone (G988U1).
Mwyann said:
You can't just flash a firmware from a different phone. The hardware is different, so the way to communicate with it is different. You're lucky it even booted, I wouldn't have expected that even. You're simply stuck with the original firmware and CSC list. Or, maybe you could try with custom ROMS but I wouldn't be so sure about it. Either way, you'll have to use a ROM/firmware that is built for your phone (G988U1).
Click to expand...
Click to collapse
Huh I thought the actual hardware between U1 and W was the same? They're both Snapdragons. Besides I've seen other posts of people doing the same (tbh, they were going from W to U1, but still)
Mwyann said:
You can't just flash a firmware from a different phone.
Click to expand...
Click to collapse
Oh but you CAN.
U, U1, and W have all been cross-flashable ever since Samsung first introduced universal hardware, starting with the S8
Jetrel1 said:
Bonus question: My CSC info is: XAA/XAA,XAA/SPR. Does that mean that it was originally a Sprint model phone, someone's flashed the firmware to an unbranded version, then sold it off as New (Open Box)?
Click to expand...
Click to collapse
Probably. Very common for online sellers to do.
The key probably lies in what the CSC shows as after flashing W firmware. If it stays as XAA, changing the CSC manually to a Canadian one could possibly make it work
iBowToAndroid said:
Oh but you CAN.
U, U1, and W have all been cross-flashable ever since Samsung first introduced universal hardware, starting with the S8
Click to expand...
Click to collapse
I thought so too, lol
Any thoughts on why my flash caused the SIM issue? Did I maybe just install the wrong version? I don't think I did, I used Frija
Some further research led me to the subject of accidentally mucking up the modem firmware which I might have done
Jetrel1 said:
I thought so too, lol
Any thoughts on why my flash caused the SIM issue? Did I maybe just install the wrong version? I don't think I did, I used Frija
Some further research led me to the subject of accidentally mucking up the modem firmware which I might have done
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See my other post above
iBowToAndroid said:
See my other post above
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My bad I didn't even compute. Thanks!
Jetrel1 said:
I live in Canada. I purchased an S20 Ultra off a seller on Canadian best buy (open box). I assumed it'd be a Canadian variant, but it was an unlocked US version (U1 firmware). OK whatever, but it meant my Samsung Pay doesn't work, along with a few other calling features.
I downloaded the patched Odin, downloaded the G988W firmware (with XAC CSC) with Frija, added the appropriate files to Odin (used Home CSC), and flashed it. The flashing itself went fine, but when I went to re-insert my SIM...nothing. It didn't even error out and say "No SIM Detected", I just had no coverage, and in SIM manager, both slots were empty.
Freaked out, and eventually flashed back to G988U1/XAA and thank Christ it works now. But my question is...why?
I dug though this forum before doing it to try and anticipate any issues. Followed the instructions to the letter, nowhere said this would be an issue. Couldn't even find any relevant support questions for this issue on this model. Not sure if it's a new development, but I absolutely don't want to risk messing my phone up further if I reattempt.
Bonus question: My CSC info is: XAA/XAA,XAA/SPR. Does that mean that it was originally a Sprint model phone, someone's flashed the firmware to an unbranded version, then sold it off as New (Open Box)?
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I Just did exactly the same and got a tmobile variant but want the W preferably the samsung factory rom not a carrier one. Which guide did you follow? I found this for the 21 Ultra and expect the steps to be similar https://forum.xda-developers.com/t/...-samsung-unlocked-bloatfree-firmware.4224423/
What calling features don't work in Canada? I have a W variant, live in Canada, and want an U1 to get esim working. I am also looking for a guide to follow to flash my phone.
funrunner said:
What calling features don't work in Canada? I have a W variant, live in Canada, and want an U1 to get esim working. I am also looking for a guide to follow to flash my phone.
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Samsung Pay doesn't work - that's a big one for me, it's a pain in the **** losing that. Will only accept US ZIP codes when setting up.
Caller ID doesn't work
That extra info you get when texting (like seen/read stuff) doesn't work in the native Samsung text app, you have to use google messages (yeah, no)
I'm sure there's other stuff but those are the main ones

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