Does flashing G988U sprint locked phone safe? - Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News

I have bought SM-G988U phone which is sprint locked. If i try to flash the phone with the unlocked U1 model would this unlock the phone or not?
Sorry For this but i'm still a beginner and don't know if this would fix my problem. If not, then what would you recommend please?

As far as I know it's safe....but as with anything involving modding your phone....be careful as one misstep could cost you.

Hey dude, I can confirm U1 works great on Sprint devices, currently using it and still getting access to the t-mobile 5g networks here in LA.

nerdrum said:
Hey dude, I can confirm U1 works great on Sprint devices, currently using it and still getting access to the t-mobile 5g networks here in LA.
Click to expand...
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sorry bro but would u by any chance have Link for u1 download that's not Samsung website ? thanks in advance

Primal instinct said:
As far as I know it's safe....but as with anything involving modding your phone....be careful as one misstep could cost you.
Click to expand...
Click to collapse
Thank you ! So just to confirm you mean if I Flash my sprint locked S20 Ultra with the U1 firmware, it will unlock it somehow?

??

mazarsc1 said:
??
Click to expand...
Click to collapse
No, it will not Sprint device Network unlocked. Your device will still be Sprint locked. I do believe this model will actually fail if you flash in Odin. Sprint pretty much puts an MDM on their devices now preventing firmware flashing. If it does flash by chance, it will just remove Sprint's bloatware apps.

ammernogie said:
No, it will not Sprint device Network unlocked. Your device will still be Sprint locked. I do believe this model will actually fail if you flash in Odin. Sprint pretty much puts an MDM on their devices now preventing firmware flashing. If it does flash by chance, it will just remove Sprint's bloatware apps.
Click to expand...
Click to collapse
Thank you! Is it the same case with ATT phone?

Tried to flash Sprint S20 Ultra to U1 in Odin and no go. How might I accomplish this flash with the U1 firmware. I've got the package file already.

brandonjscioneaux said:
Tried to flash Sprint S20 Ultra to U1 in Odin and no go. How might I accomplish this flash with the U1 firmware. I've got the package file already.
Click to expand...
Click to collapse
Successfully flashed.

I have a Sprint S20 Ultra. I'm currently on Sprints latest firmware ATE6. I downloaded ATEC which is Junes security update with USC carrier. It is U firmware as well. I am trying to flash in Odin and I keep getting a fail. Any ideas if Sprint has now implemented something to prevent flashing of other carriers firmware? I never had issues with my S10+. This is the first time I am trying to flash firmware with my S20 Ultra. Help please

sigh. all you need is the latest patched odin and you can flash the u1 or other carrier u firmware.
i flashed the att U firmware to xaa U1 firmware. and then flashed to TMB U firmware
dont listen to other people who havent been in the odin game.

sunmybun said:
sigh. all you need is the latest patched odin and you can flash the u1 or other carrier u firmware.
i flashed the att U firmware to xaa U1 firmware. and then flashed to TMB U firmware
dont listen to other people who havent been in the odin game.
Click to expand...
Click to collapse
Whats the latest patched odin? I tried with 3.13.1.3b

Wacky2bakky said:
Whats the latest patched odin? I tried with 3.13.1.3b
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Click to collapse
3.14.1

sunmybun said:
3.14.1
Click to expand...
Click to collapse
Is that maybe why its failing? Do u care to share that patched odin version please?

Wacky2bakky said:
Is that maybe why its failing? Do u care to share that patched odin version please?
Click to expand...
Click to collapse
https://forum.xda-developers.com/android/software/patched-odin-3-13-1-t3762572

sunmybun said:
https://forum.xda-developers.com/android/software/patched-odin-3-13-1-t3762572
Click to expand...
Click to collapse
Should I use 3.14.1 or 3.14.1.3B?

Wacky2bakky said:
Should I use 3.14.1 or 3.14.1.3B?
Click to expand...
Click to collapse
patched one

I used the patched 3.13.1 version. Yes it is safe, I'm running the Sprint version UI firmware. Originally tried with 3.14.1 and failed 3x's. Also tried the full International UI firmware unbranded with the 3.13.1 patched firmware and the phone would get stuck on the SAMSUNG logo. My phone is sim locked to Sprint though and that's why I think it wouldn't boot the full unlocked version. The Sprint branded version worked like a charm.

brandonjscioneaux said:
I used the patched 3.13.1 version. Yes it is safe, I'm running the Sprint version UI firmware. Originally tried with 3.14.1 and failed 3x's. Also tried the full International UI firmware unbranded with the 3.13.1 patched firmware and the phone would get stuck on the SAMSUNG logo. My phone is sim locked to Sprint though and that's why I think it wouldn't boot the full unlocked version. The Sprint branded version worked like a charm.
Click to expand...
Click to collapse
look at my replies. and check out the link for the newer odin.

Related

AT&T G950U (S8) stock firmware?

Does anyone have the AT&T variant ( or a link ) of the stock firmware for the G950U? Also.. could someone please explain how to go about flashing it over? I have a Verizon G950U.. my old Verizon S7 Edge I flashed to the AT&T firmware but it was much simpler... I used odin and just put in the 4 files ( AP, BL, CP, & CSC_ATT ) ... but after reading quite a few threads on here.... it appears to be a much more complicated process with the S8.
Check out:
https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817
and
https://forum.xda-developers.com/showpost.php?p=72779071&postcount=32
G950USQS1AQF7 USA ATT firmware is out now on different paid sites, including gsm-firmware.com
AT&T QF7 (latest fw)
https://drive.google.com/drive/folders/0BzcTJHzsBL3KeFBIa2RxWkNnclk
I have the same confusion. Did you figure out how to switch to ATT? i have an Verizon Unlock S8. Just downloaded the ATT firmware. Which instruction should i follow?
do i still need the factory binary and the canadian firmware?
thx.
TylerG518 said:
Does anyone have the AT&T variant ( or a link ) of the stock firmware for the G950U? Also.. could someone please explain how to go about flashing it over? I have a Verizon G950U.. my old Verizon S7 Edge I flashed to the AT&T firmware but it was much simpler... I used odin and just put in the 4 files ( AP, BL, CP, & CSC_ATT ) ... but after reading quite a few threads on here.... it appears to be a much more complicated process with the S8.
Click to expand...
Click to collapse
joe3681 said:
AT&T QF7 (latest fw)
https://drive.google.com/drive/folders/0BzcTJHzsBL3KeFBIa2RxWkNnclk
Click to expand...
Click to collapse
Thank you!
Is this 100% factory?
iteam said:
Thank you!
Is this 100% factory?
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Click to collapse
Yes. There's another update or two that'll come through after setup though but this will flash and be bone stock.
joe3681 said:
Yes. There's another update or two that'll come through after setup though but this will flash and be bone stock.
Click to expand...
Click to collapse
please check, odin saids md5 invalid
Rename every file, remove the .md5 off the end.
That's ALWAYS step 1.
2. Use modded Odin
I've flashed it many times with no problem so if you're getting any error it's user error.
Ok, so I flashed the June att firmware sucesfully but when I booted it up, the boot screen still show custom. Anyway to fix this to not show anything like stock att?
nevermind, once rebooted again, it disappeared
Hi. is there a guide that shows how to flash ATT firmware onto the unlocked S8? Thanks!
joe3681 said:
Rename every file, remove the .md5 off the end.
That's ALWAYS step 1.
2. Use modded Odin
I've flashed it many times with no problem so if you're getting any error it's user error.
Click to expand...
Click to collapse
for a modded Odin, is that using the princecomsy odin or is that changing something in the odin.ini file that i saw somewhere else?
Yes it's the PrinceComsy Odin
joe3681 said:
AT&T QF7 (latest fw)
https://drive.google.com/drive/folders/0BzcTJHzsBL3KeFBIa2RxWkNnclk
Click to expand...
Click to collapse
Broken link!
please you can be fix it?
neowolfx said:
Broken link!
please you can be fix it?
Click to expand...
Click to collapse
I took it out of my Google drive. It's old outdated fw
joe3681 said:
I took it out of my Google drive. It's old outdated fw
Click to expand...
Click to collapse
Can you pretty please link the latest Revision 2 AT&T G950U Firmware? I cannot seem to find the Revision 2 Dec 20th Updated Release Build. I am pretty sure the build number is G950USQU2BQK5 but I have access to all the other variants on this update just cannot find the damn ATT version. I keep getting errored out writing the G950U1 XAA firmware, the G950U on all other carriers I get errors on it as well. I tried using Odin Comsy, Odin 3.12.7, 3.12.3 patched 256 version, 3.12.7, and even using the Z3X Samsung Tool Pro to reflash the firmware. I got one to finally take using all 5 files on G950U TMB but now the baseband is unknown and I cannot see the IMEI either. Anyone have any suggestions, I would highly appreciate that....
Flash QK5. It's for all carriers and installs proper carrier files and settings depending on the SIM you have installed. Use Prince Comsy Odin.
QK5 on Updato.com: (Labeled VZW but installs as ATT) http://updato.com/firmware-archive-select-model?record=0C70C888DEB811E7A5F9FA163EE8F90B
I tried to flash but i got SW Rev Check Fail,Fused2,Binary1 Error?!?!?! Can You help
I tried to flash but i got SW Rev Check Fail,Fused2,Binary1 Error?!?!?! Can You help
snssolos15 said:
I tried to flash but i got SW Rev Check Fail,Fused2,Binary1 Error?!?!?! Can You help
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Me too, after latest OTA.

Debranding S8

Hi guys, I'm out of USA.
After many failed attempts still can not debrand my AT&T SM-G950U.
Through ODIN I upgraded successfully to latest G950USQS1AQF7_USC
But can not find any unlocked firmware (XAA) to my S8, only for S8+.
Any idea where to find it?
Thanks.
psicobelico said:
Hi guys, I'm out of USA.
After many failed attempts still can not debrand my AT&T SM-G950U.
Through ODIN I upgraded successfully to latest G950USQS1AQF7_USC
But can not find any unlocked firmware (XAA) to my S8, only for S8+.
Any idea where to find it?
Thanks.
Click to expand...
Click to collapse
Not searching very hard then. Update.com and search firmwares for G950U1. You'll see the latest XAA listed.
Works great (Minus volte and wifi calling), I've been running it myself
Thanks joe3681 for you answer.
Firmware downloaded from sammobile (G950U1UEU1AQE3_G950U1OYM1AQE3_XAA)
But i got the following error when try to install it: FAIL! Model dismatch fail
Sounds like it's not correct fw then.
http://updato.com/firmware-archive-select-model?record=1C742B3D514411E7963AFA163EE8F90B
This is what I used and it worked perfect. I also always use the modded Odin and remove .md5 off the end of everything once I extract it all.
Ok!!
The modded odin works!!
Debranded!!
Thanks a lot joe!
psicobelico said:
Ok!!
The modded odin works!!
Debranded!!
Thanks a lot joe!
Click to expand...
Click to collapse
Glad it worked! Modded Odin is all I ever use
joe3681 said:
Glad it worked! Modded Odin is all I ever use
Click to expand...
Click to collapse
what a modded odin ??
emaditto said:
what a modded odin ??
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Click to collapse
Here it is.
https://www.dropbox.com/s/2aqfpg4nwiwroyz/MODDED ODIN.zip?dl=0
psicobelico said:
Hi guys, I'm out of USA.
After many failed attempts still can not debrand my AT&T SM-G950U.
Through ODIN I upgraded successfully to latest G950USQS1AQF7_USC
But can not find any unlocked firmware (XAA) to my S8, only for S8+.
Any idea where to find it?
Thanks.
Click to expand...
Click to collapse
Could you plz provide the link for upgrading to AQF7. I have an at&t galaxy s8 as well and i am outside US so haven't been able to update it. I have unlocked my phone already. Bt no OTA updates. Plz provide me the link for the file. Thank you. I have
Baseband version :G950USQU1AQC9
Android security patch March 1, 2017
Hi Guys, I'm in the same case as the OP, and I have always updated via Odin using Sammobile's firmware, which only includes the AP file. I already downloaded the modded Odin and firmware from joe's post, but it includes a lot more files.
Should I load all the files to Odin? or just flashing the AP file would be OK? Thank you very much in advance!
---------- Post added at 01:01 PM ---------- Previous post was at 12:23 PM ----------
Sashank1923 said:
Could you plz provide the link for upgrading to AQF7. I have an at&t galaxy s8 as well and i am outside US so haven't been able to update it. I have unlocked my phone already. Bt no OTA updates. Plz provide me the link for the file. Thank you. I have
Baseband version :G950USQU1AQC9
Android security patch March 1, 2017
Click to expand...
Click to collapse
Use the one Joe posted.
http://updato.com/firmware-archive-s...3AFA163EE8F90B
I also speak spanish if that helps you.
So, I got home and flashed all files. Everything went alright and my S8 is updated and Bixby voice works just fine
joe3681 said:
Sounds like it's not correct fw then.
http://updato.com/firmware-archive-select-model?record=1C742B3D514411E7963AFA163EE8F90B
This is what I used and it worked perfect. I also always use the modded Odin and remove .md5 off the end of everything once I extract it all.
Click to expand...
Click to collapse
This firmware work for sm-g950u?
neowolfx said:
This firmware work for sm-g950u?
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Click to collapse
As long as it's the same bootloader version you have now. You can flash U1 on a U for bloat free firmware
I try do do this
I try to do the same but i get these error in the odin and in the cell i get sw check fail.
Anyone can help me?
jpcdeux said:
As long as it's the same bootloader version you have now. You can flash U1 on a U for bloat free firmware
Click to expand...
Click to collapse
Would that work with the SM-G955U?
Battleware said:
Would that work with the SM-G955U?
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Click to collapse
Yes as long as it's G955U1 firmware
Hi There, can I use 892U S3 bootloader version firmware on same bootloader 892A phone?
I have asked the same question here
https://forum.xda-developers.com/showpost.php?p=78894415&postcount=5
vazovskiiii said:
Hi There, can I use 892U S3 bootloader version firmware on same bootloader 892A phone?
I have asked the same question here
https://forum.xda-developers.com/showpost.php?p=78894415&postcount=5
Click to expand...
Click to collapse
From what it looks they are having issues between the to bootloader's. Your answer may come in the 892 partcyborg root thread.

Science firmware site?

I have the unlocked U1 version and am trying to use this site to flash new beta Oreo. I don't see my variant listed. I only see the U and not U1. Is that the same file I should flash?
jhester1967 said:
I have the unlocked U1 version and am trying to use this site to flash new beta Oreo. I don't see my variant listed. I only see the U and not U1. Is that the same file I should flash?
Click to expand...
Click to collapse
I would look other places if they arent clear enough
Thanks. I'm sure someone though is in the same position as me and hopefully had an answer
It's only for carrier S8's. They have no firmware for unlocked models.
You can flash QK5 through Odin and do it that way if you're on a US carrier and want bloat though.
jhester1967 said:
I have the unlocked U1 version and am trying to use this site to flash new beta Oreo. I don't see my variant listed. I only see the U and not U1. Is that the same file I should flash?
Click to expand...
Click to collapse
I just updated my phone from that site and it works perfectly thru stocked recovery. They are all OTA updates so it will not wipe your phone. Only thing is when flashing from nougat to oreo change your themes back to pure stock or you will get system ui error, and have to factory reset
ninja75 said:
I just updated my phone from that site and it works perfectly thru stocked recovery. They are all OTA updates so it will not wipe your phone. Only thing is when flashing from nougat to oreo change your themes back to pure stock or you will get system ui error, and have to factory reset
Click to expand...
Click to collapse
What version phone do you have?
jhester1967 said:
What version phone do you have?
Click to expand...
Click to collapse
G955U locked to tmobile. I just updated last night to oreo beta 3
ninja75 said:
G955U locked to tmobile. I just updated last night to oreo beta 3
Click to expand...
Click to collapse
That's awesome. My problem is I can't use the site apparently since I'm not on a carrier version. I'm using Unlocked U1 version.
jhester1967 said:
That's awesome. My problem is I can't use the site apparently since I'm not on a carrier version. I'm using Unlocked U1 version.
Click to expand...
Click to collapse
It should work on all u.s. snapdragon s8+ it's a OTA
ninja75 said:
It should work on all u.s. snapdragon s8+ it's a OTA
Click to expand...
Click to collapse
This is the version I'm running. Which update should I choose?

Combination File Flashing Issue

Every time I try to flash the combination file for 950U, it fails immediately and throws the "SW REV CHECK FAIL" error.
I'm on latest BQL1 and trying to swap CSC using the method posted here before.
Any suggestions?
goldieDEV said:
Every time I try to flash the combination file for 950U, it fails immediately and throws the "SW REV CHECK FAIL" error.
I'm on latest BQL1 and trying to swap CSC using the method posted here before.
Any suggestions?
Click to expand...
Click to collapse
Either use comsey or u have the u1 combo firmware
TheMadScientist said:
Either use comsey or u have the u1 combo firmware
Click to expand...
Click to collapse
I've used comsy and it still fails..
When you mention u1 are you referring to the unlocked firm or the baseband.
Edit: U1 is the only combo I can find for 950U.
I'm trying to change VZW to TMB.
goldieDEV said:
I've used comsy and it still fails..
When you mention u1 are you referring to the unlocked firm or the baseband.
Edit: U1 is the only combo I can find for 950U.
I'm trying to change VZW to TMB.
Click to expand...
Click to collapse
The firmware u mention u was on is a u2 bootloader and u may have the u1 bootloader firmware
TheMadScientist said:
The firmware u mention u was on is a u2 bootloader and u may have the u1 boooader fiemware
Click to expand...
Click to collapse
Where could I find a U2 combo?
I can't dowgrade which sucks
goldieDEV said:
Where could I find a U2 combo?
I can't dowgrade which sucks
Click to expand...
Click to collapse
I am at work but i will find the link i saw of it and post it in a hour or so
TheMadScientist said:
I am at work but i will find the link i saw of it and post it in a hour or so
Click to expand...
Click to collapse
Thanks. The only combo I can find for U2 is for the Note 8 (N950U)
goldieDEV said:
Thanks. The only combo I can find for U2 is for the Note 8 (N950U)
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=74962800&postcount=433
TheMadScientist said:
https://forum.xda-developers.com/showpost.php?p=74962800&postcount=433
Click to expand...
Click to collapse
THANK YOU
TheMadScientist said:
https://forum.xda-developers.com/showpost.php?p=74962800&postcount=433
Click to expand...
Click to collapse
Hey buddy can you help me with indian csc file tired flashing indian firmware but it detects btc/btc/btc
I want to use reliance jio sim in it and samsung pay in india
My model no is 950fd thank u
wtf!!droid said:
Hey buddy can you help me with indian csc file tired flashing indian firmware but it detects btc/btc/btc
I want to use reliance jio sim in it and samsung pay in india
My model no is 950fd thank u
Click to expand...
Click to collapse
I dont know anything about cross flashing them yet Every time I flash xaa unlocked firmware mine defaults back to my stock csc I am still new to cross carrier firmwares lol
TheMadScientist said:
I dont know anything about cross flashing them yet Every time I flash xaa unlocked firmware mine defaults back to my stock csc I am still new to cross carrier firmwares lol
Click to expand...
Click to collapse
Mine is international variant but still facing this issue :crying:
Hello ...
I am trying to find the Samsung S8 Plus G955W combination firmware files (free). Does anybody know where I can find them? This site has all but the G955W //combinationfirmware.com/samsung-s8-plus-sm-g950fd-g955n-g892u-g9500/
Thank you!

Help me identify the correct FW to flash/update to Pie 9.0

I have an Sprint Samsung S8. I want to update to Android Pie 9. Its currently on Android 8.0.0 - R16NW.G950USQU5CSA4. And I want to flash with Odin to any compatible Android Pie FW. I am personally not looking to unlock or anything. The confusing part is that when I research the FW version (G950USQU5CSA4) it comes as a Verizon FW. So I am not sure if is safe to flash any of the Pie FW available on sammobile for Sprint.
It is safe to flash for example to one like G950USQU5DSD3 that appears in Sammobile and is for Sprint?
BobAt1080p said:
I have an Sprint Samsung S8. I want to update to Android Pie 9. Its currently on Android 8.0.0 - R16NW.G950USQU5CSA4. And I want to flash with Odin to any compatible Android Pie FW. I am personally not looking to unlock or anything. The confusing part is that when I research the FW version (G950USQU5CSA4) it comes as a Verizon FW. So I am not sure if is safe to flash any of the Pie FW available on sammobile for Sprint.
It is safe to flash for example to one like G950USQU5DSD3 that appears in Sammobile and is for Sprint?
Click to expand...
Click to collapse
Ur fw is sm-g950u
kpwnApps said:
Ur fw is sm-g950u
Click to expand...
Click to collapse
Gotcha, so should I install/flash with Odin any SM-g950u fw for Sprint available on Sammobile?
BobAt1080p said:
Gotcha, so should I install/flash with Odin any SM-g950u fw for Sprint available on Sammobile?
Click to expand...
Click to collapse
Yes
kpwnApps said:
Yes
Click to expand...
Click to collapse
Awesome, thank you!
For any newbie like me who ever had a look at this thread. This definitely work as said by @kpwnApps, I downloaded SM-G950U, build G950USQU5DSD3 (3.92GB) from Sammobile and flashed with Odin. Flashed AP, BL, CP, CSC (not CSC_HOME) on its respective place on Odin. 5m 32s later it was updated with no trouble.
BobAt1080p said:
For any newbie like me who ever had a look at this thread. This definitely work as said by @kpwnApps, I downloaded SM-G950U, build G950USQU5DSD3 (3.92GB) from Sammobile and flashed with Odin. Flashed AP, BL, CP, CSC (not CSC_HOME) on its respective place on Odin. 5m 32s later it was updated with no trouble.
Click to expand...
Click to collapse
Thanks
kpwnApps said:
Thanks
Click to expand...
Click to collapse
Last question, I am personally not interested. Just curious. As long as is the same android version, would it be possible to downgrade too by flashing with Odin and earlier version? or would something like that cause a brick?
BobAt1080p said:
Last question, I am personally not interested. Just curious. As long as is the same android version, would it be possible to downgrade too by flashing with Odin and earlier version? or would something like that cause a brick?
Click to expand...
Click to collapse
It depends on bootloader version but it doesnt brick anything

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