how to revert back to bql1 - T-Mobile Samsung Galaxy S8 Questions & Answers

i have a t-mobile samsung galaxy s8 stock not rooted. i read that someone had leaked the official oreo build for this phone so i ended up side loading it only to find out it was not official build but a beta build. so now im trying to figure out what i need to do to revert back to bql1. i have downloaded odin3 v3.12.7 and downloaded the bql1 files but not too sure on how to use odin. will using odin void my warranty? and what files do i need to use in odin? i see other instructions to use AP, BL, CP, and the CSC_OYN but not the HOME_CSC_OYN and nothing for the user data file. whats the difference in those files and why not use the HOME_CSC_OYN? thanks for the help!!

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[REQ] Decryption code for JPA XEN

I want to be able to flash the KIES firmware trough odin. I allready managed to download GT-I9000_I9000XWJPA_I9000XENJP2_I9000XXJPP_I9000XWJPA_XW_XEN.zip.enc This is the firmware I installed trough kies and is currently on my phone. I want to create Odin separate file package in case I **** something up I can always return to my original firmware. Could someone provide the decryption code for http://fus.samsungmobile.com/Phone_...00XENJP2_I9000XXJPP_I9000XWJPA_XW_XEN.zip.enc . Many thanks in advance!
If you have upgraded via Kies you might be able to find the unecrypted rom in a temp directory of your computer.
Orcie keep me posted on your findings?
I already posted a Odin flashable JPA rom.
It is the same as the one from Kies, but it has been converted to a mid package to allow flashing with Odin.
CSC_I9000XENJP2-SINGLE
GT-I9000_I9000XWJPA_I9000XXJPP_CODE-MODEM_OSP-MID
Allready spotted that. Have the code now 55625. Richthoven how do you convert from single file to mid level package? I can tell what files need to go where but it seems that I need something extra?

[Q] empty pda and csc fields after update

hello everyone,
I recently purchased my galaxy tab in dubai and could not update through kies as i got the following message "This version of device cannot be updated".
Then i flashed xxjq1 along with bootloaders from this thread http://forum.xda-developers.com/showthread.php?t=1073854 and the gt-p1000_mr_PIT.zip files. now everything works fine but the csc and pda fields are empty.
How can i get the pda and csc fields back. I want to flash the dxjpe firmware as this is the 2.3.3 asian version i found. Will this bring my csc and pda fields back to normal. Will this enable me to update future updates via kies.
Aren't you supposed to boot immediately into recovery after you flash the rom? That installs the csc files. Double check the instructions.
so can i go ahead and flash the dxjpe firmware , will this reinstate my csc files, and what pit file i need to use with this.
hopefully it would fix your problem. as for pit for the dxjpe use (GT-P1000_M.PIT)
I got the error when downgrading and flashing signed bootloaders... Rolling back from GB to froyo gave me that error... I suggest unsigning the bootloader then flashing again...
afaque_h said:
hello everyone,
I recently purchased my galaxy tab in dubai and could not update through kies as i got the following message "This version of device cannot be updated".
Then i flashed xxjq1 along with bootloaders from this thread http://forum.xda-developers.com/showthread.php?t=1073854 and the gt-p1000_mr_PIT.zip files. now everything works fine but the csc and pda fields are empty.
How can i get the pda and csc fields back. I want to flash the dxjpe firmware as this is the 2.3.3 asian version i found. Will this bring my csc and pda fields back to normal. Will this enable me to update future updates via kies.
Click to expand...
Click to collapse
Your post no. 1 is confusing. You said you flashed to JQ1 yet the attachment says JM3. Anyway use this (by noxxious) procedure to get into a ROM without rooting then update thru kies.
The attachment showed the message displayed by kies when i wanted to update my gtab after purchasing. Since i could not officially update using kies i opted for manual flashing
Sent from my GT-I9000 using Tapatalk
afaque_h said:
The attachment showed the message displayed by kies when i wanted to update my gtab after purchasing. Since i could not officially update using kies i opted for manual flashing
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
Just follow the link above to downgrade to JK2 which is a version with unsigned bootloader. Then update thru kies. Kies should be able to detect your firmware as upgradable to JPE.
Good luck!
This happened with me after a soft brick. Reboot into recovery and see if CSC is installed, if not do a factory reset. For me flashing a stock firmware fixed it for me.
DarkPal said:
This happened with me after a soft brick. Reboot into recovery and see if CSC is installed, if not do a factory reset. For me flashing a stock firmware fixed it for me.
Click to expand...
Click to collapse
Right, I reminded him a while ago after flashing to immediately go into recovery to get the csc files installed. The JQ1thread has clear instructions.
Don't worry about that other rom yet - by correctly flashing JQ1 you will have the complete system and safe bootloaders. Once that's done, you can go in any direction.

How to flashed stock XXJVT with Odin?

Hi guys, just purchased a new SGS from the store, it is still on Froyo though, I wish to upgrade it to GB with Odin, and I've finished downloaded XXJVT firmware from
http://www.sammobile.com/showthread.php?t=17
after I extract them, I got these:
CODE_I9000XXJVT_CL617736_REV03_user_low_ship.tar.md5
GT-I9000-CSC-MULTI-OXAJVT.tar.md5
MODEM_I9000XXJVT_REV_00_CL1064602.tar.md5
GT-I9000-CSC-HOME-MULTI-OXAJVT.tar.md5
s1_odin_20100512.pit
I know that PIT file is for PIT slot, user_low_ship is for PDA, Modem is for Phone slot, but as you can see there, there are 2 CSC files, CSC Multi and CSC Home-Multi, which one should I choose? and is there any extra steps before I flash them with Odin? any help is appreciated!
In upgrading firmware from Froyo to GB you need to upgrade bootloader as well. But before that, check whether your phone can enter "download mode" or not.
If can, then find gingerbread bootloader. You can search it here in XDA, or you can search [Ramad] stock ROM. He always provide the package that include bootloader. I'm not sure about the above firmware.
I read it somewhere that the bootloader is already included in GB, isnt it?
Artest113 said:
Hi guys, just purchased a new SGS from the store, it is still on Froyo though, I wish to upgrade it to GB with Odin, and I've finished downloaded XXJVT firmware from
http://www.sammobile.com/showthread.php?t=17
after I extract them, I got these:
CODE_I9000XXJVT_CL617736_REV03_user_low_ship.tar.md5
GT-I9000-CSC-MULTI-OXAJVT.tar.md5
MODEM_I9000XXJVT_REV_00_CL1064602.tar.md5
GT-I9000-CSC-HOME-MULTI-OXAJVT.tar.md5
s1_odin_20100512.pit
I know that PIT file is for PIT slot, user_low_ship is for PDA, Modem is for Phone slot, but as you can see there, there are 2 CSC files, CSC Multi and CSC Home-Multi, which one should I choose? and is there any extra steps before I flash them with Odin? any help is appreciated!
Click to expand...
Click to collapse
You can follow this video for stock rom installation
http://www.hdtechvideo.com/?p=54
thanks! done it already! running GB ROM now!

FIRMWARE (PI2) -- S7 Edge (SM-G935A) 10/03/16 Stock At&t Update G935AUCS4API2

Here is the stock firmware for the 10/03/16 Update to the SM-G935A (At&t Samsung Galaxy S7 Edge) G935AUCS4API2 (BL4)
WARNING BEWARE
This will flash BL4 (Bootloader Version 4) which means you can not downgrade firmware or flash 935U, you can however still obtain root by following this guide!
I am not responsible for anything that happens as a result of flashing any of these files or your own actions.
Requirements to take you back to stock firmware
Samsung Drivers
Odin 3.12.3
BL
AP
CP
CSC
Instructions:
1. Download all files and install Samsung Drivers
2. Open Odin and place BL, AP, CP, and CSC files in Odin into their respective places
3. Click Start and wait until you see Pass!
Your phone will reboot and you will be back to stock.
If this helped you, please remember to hit the 'Thanks' button and consider donating to me. Thanks!
will it effect KNOX ?
After flash it will i still able to use Samaung pay ?
mod777 said:
Here is the stock firmware for the 10/03/16 Update to the SM-G935A (At&t Samsung Galaxy S7 Edge) G935AUCS4API2 (BL4)
WARNING BEWARE
This will flash BL4 which means you can not downgrade firmware or flash 935U, you can however still obtain root by following this guide!
I am not responsible for anything that happens as a result of flashing any of these files or your own actions.
Requirements to take you back to stock firmware
Samsung Drivers
Odin 3.12.3
BL
AP
CP
CSC
Instructions:
1. Download all files and install Samsung Drivers
2. Open Odin and place BL, AP, CP, and CSC files in Odin into their respective places
3. Click Start and wait until you see Pass!
Your phone will reboot and you will be back to stock.
If this helped you, please remember to hit the 'Thanks' button and consider donating to me. Thanks!
Click to expand...
Click to collapse
ansh5671 said:
After flash it will i still able to use Samaung pay ?
Click to expand...
Click to collapse
Will not trip Knox and yes Samsung Pay works
september secirity patch correct?
marcusva79 said:
september secirity patch correct?
Click to expand...
Click to collapse
correct
Thanks for the upload. Almost thought this was the October patch. Have a great Tuesday. Cheers ?
Sent from my SAMSUNG-SM-G935A using Tapatalk
Hows the battery life on this latest update?
My first day on it today. Disabled all bloat I'll post a picture later today SMK.
Sent from my SAMSUNG-SM-G935A using Tapatalk
How do i flash these .tar.rar files in ODIN?
When I download the four files, they are in a .tar.rar format. My ODIN is not recognizing this format. I have sen other uploads of other firmwares in a .md5 format and my ODIN will recognize it. Could someone please help?
Thanks!!
mod777 said:
Here is the stock firmware for the 10/03/16 Update to the SM-G935A (At&t Samsung Galaxy S7 Edge) G935AUCS4API2 (BL4)
WARNING BEWARE
This will flash BL4 (Bootloader Version 4) which means you can not downgrade firmware or flash 935U, you can however still obtain root by following this guide!
I am not responsible for anything that happens as a result of flashing any of these files or your own actions.
Requirements to take you back to stock firmware
Samsung Drivers
Odin 3.12.3
BL
AP
CP
CSC
Instructions:
1. Download all files and install Samsung Drivers
2. Open Odin and place BL, AP, CP, and CSC files in Odin into their respective places
3. Click Start and wait until you see Pass!
Your phone will reboot and you will be back to stock.
If this helped you, please remember to hit the 'Thanks' button and consider donating to me. Thanks!
Click to expand...
Click to collapse
Michael6SK said:
When I download the four files, they are in a .tar.rar format. My ODIN is not recognizing this format. I have sen other uploads of other firmwares in a .md5 format and my ODIN will recognize it. Could someone please help?
Thanks!!
Click to expand...
Click to collapse
Um, thats because you need to unzip them using WinRar...
The tar.md5 files are inside the individual zip files.
thanks!
smknutson said:
Um, thats because you need to unzip them using WinRar...
The tar.md5 files are inside the individual zip files.
Click to expand...
Click to collapse
So It is compatible with the G935T, my next question is if Flashing different carrier firmware effects the LTE bands you can access. does the SoC support all bands based on the ROM or is it a hardware change that effects them?
Thank you... these files just saved me from a brick...No idea what happened but I was stuck at the Samsung AT&T Galaxy S7 Edge screen and factory reset would not work
Any success with just flashing the CSC with the U firmware? I was able to get volte with a corrected xml file but curious if I can mix and match and get more of the atnt features.
worked flawlessly heading back to stock.
i was rooted with the 935U PG9 code - dont have to do anything special. follow steps in ODIN (i also hit the repartition checkbox) and you're back to stock.
if you want to remove the unlock icon on the start up screen, complete odin, let it boot up to welcome screen, then factory reset and it's back to like you bought it.
PLEASE HELP!!!!
I have been stuck at one of the early firmwares beause of a broken ota to my phone. I had just flashed this and i love it. The only problem is that the moment my phone booted up, i was greeted with a message saying, [ATTENTION The Fingerprint sensor is not responding. Try Again Later] Ive googled so much and none of the "fixes" workes. Before you ask, yes i have flashed stock, yes i factory reset, multiple times for both. Please help i want to use my fingerprint sensor again!!!!:crying:
Okay question?
I tried flashing the "U" variant back to a Tmobile G935T Rev 4 PI3 S7 Edge and it errors out halfway through the AP part. All other 3 files will flash though. Why can't I flash it back to the "U" firmware after the Att and Tmobile variants are on Rev 4? The G935U and G930U are both on Rev 4 now too. I'm curious why it won't let me flash that variant anymore. It's not a big deal but personally I think the "U" firmware runs the best out of all of them. If I get a Sprint S7 or S7 Edge I always unlock first then flash to the "U" firmware never to think about taking it back to Sprint firmware. Lol
Plus Sprint is the only one still on Rev 2 Bootloader. So can anyone tell me why the G935A or G935T won't flash back to G935U even though they are both on the same Rev 4?
dave357 said:
Okay question?
I tried flashing the "U" variant back to a Tmobile G935T Rev 4 PI3 S7 Edge and it errors out halfway through the AP part. All other 3 files will flash though. Why can't I flash it back to the "U" firmware after the Att and Tmobile variants are on Rev 4? The G935U and G930U are both on Rev 4 now too. I'm curious why it won't let me flash that variant anymore. It's not a big deal but personally I think the "U" firmware runs the best out of all of them. If I get a Sprint S7 or S7 Edge I always unlock first then flash to the "U" firmware never to think about taking it back to Sprint firmware. Lol
Plus Sprint is the only one still on Rev 2 Bootloader. So can anyone tell me why the G935A or G935T won't flash back to G935U even though they are both on the same Rev 4?
Click to expand...
Click to collapse
They will. I've gone back from v4 At&t to v4 U. Something in your setup (phone, cable, pc, files, Odin version) is stopping you.
It's something in the AP checking while flashing it. Try going from G935U Rev 4 back to G935A and watch it error out. Lol
Can someone please help me? I have a g930a and need the PI2 files asap!

Question Looking for a Flash Guide S21 Ultra

I just downloaded a new firmware from Sammobile, but I don't remember what to do now.
I have a custom rom flashed right now, as well as Magisk, so I'm not sure if the procedure is different from a new/clean phone.
wbane said:
I just downloaded a new firmware from Sammobile, but I don't remember what to do now.
I have a custom rom flashed right now, as well as Magisk, so I'm not sure if the procedure is different from a new/clean phone.
Click to expand...
Click to collapse
Depends if you want to keep the phone rooted or if you want to return to stock
I wish to keep it rooted, as well as to keep my data (if possible).
wbane said:
I wish to keep it rooted, as well as to keep my data (if possible).
Click to expand...
Click to collapse
Then you need to extract the AP section of the firmware, copy it to your phone. Then open magisk and patch the AP file, then copy the patched file back to your PC. Then you can flash the firmware in Odin using the patched ap, with the bl, and the CSC home file. If you use CSC HOME then your data will be kept.
Great! Could you explain the steps in more details?

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