I need help going back from custom rom to stock rom - Samsung Galaxy S7 Questions and Answers

So basically i installed a Superman Rom on my Galaxy S7 SM-G930F (for battery saving reasons) like 1.5 years ago and have been using it since then.
Now it's crashing a lot so i want to go back to Stock Rom and try Oreo.
The phone is unlocked, so i downloaded latest Oreo 8.0 - BTU (G930FXXS3ERLF_G930FOXA3ERKF_BTU) from sammobile.
I was planing on using Odin, putting the files there, (AP, BL, CP and CSC), setting the phone in download mode (first question i have is, the phone goes to TWRP recovery, not download mode, so how do i take to download mode?), and flash from odin/PC.
I remembered that when i installed superman rom i had to do a couple of things like decrypting the phone, so i just want to make sure i don't need to take any extra steps.
Could please confirm that i won't brick phone?
Thanks!

kerryking333 said:
So basically i installed a Superman Rom on my Galaxy S7 SM-G930F (for battery saving reasons) like 1.5 years ago and have been using it since then.
Now it's crashing a lot so i want to go back to Stock Rom and try Oreo.
The phone is unlocked, so i downloaded latest Oreo 8.0 - BTU (G930FXXS3ERLF_G930FOXA3ERKF_BTU) from sammobile.
I was planing on using Odin, putting the files there, (AP, BL, CP and CSC), setting the phone in download mode (first question i have is, the phone goes to TWRP recovery, not download mode, so how do i take to download mode?), and flash from odin/PC.
I remembered that when i installed superman rom i had to do a couple of things like decrypting the phone, so i just want to make sure i don't need to take any extra steps.
Could please confirm that i won't brick phone?
Thanks!
Click to expand...
Click to collapse
Home+VOLUME DOWN+power

Related

Bricked the S6 SM-920I. I'm at wits' end.

I got the Galaxy S6 yesterday and coming from Nexus 5, I wanted to remove the existing bloatware by flashing the XtrestoLite Deodexed ROM. This one here: http://forum.xda-developers.com/galaxy-s6/samsung-galaxy-s-6--s-6-edge-unified-development/rom-xtrestolite-deodexed-mod-edition-1-3-t3119968
I'm haven't had much experience in rooting and it's my first time flashing a custom ROM. The phone was running on Android 5.1.1.
Apparently I failed. I started with CF-Root but I wasn't sure if it was done correctly. This was followed by TWRP 2.8.7.1 . Then I tried booting up the phone and the boot logo just loops. I tried to wipe the cache as well as the Delvik-cache through TWRP but it's still the same. Then I tried to flash the stock ROM that I found online but I got the error "Nand Write Start" followed by "Fail". I seem to have tried everything and now I just want to get the phone to work again. It shouldn't be so hard.
Someone help me please :crying:
Have you tried to flash the stock rom via Smart Switch software? There's an option in the top of the window where it says "More" called Emergency Recovery. When my S6 bricked nothing but that did the trick, you should give it a try.
Gallitho said:
Have you tried to flash the stock rom via Smart Switch software? There's an option in the top of the window where it says "More" called Emergency Recovery. When my S6 bricked nothing but that did the trick, you should give it a try.
Click to expand...
Click to collapse
How did you do it? I've installed the Smart Switch software but the device doesn't appear under the list in emergency software recovery, so I can't proceed.
Edit: I managed to do it through initialization. I'll update when it's done.
Edit 2: It worked! Thanks so much!
ztmj96 said:
How did you do it? I've installed the Smart Switch software but the device doesn't appear under the list in emergency software recovery, so I can't proceed.
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Click to collapse
Your PC is recognizing your phone? If not maybe you shall update your drivers first. My S6 is the same model number as yours and it does appears in the Emergency Recovery list.
Another solution could be trying to flash using another version of Odin; I saw a similar problem on another forum and it was solved using Odin 3.10 to reflash the stock firmware.
Also remember that you can't downgrade your firmware once that you are on 5.1.1, no 5.02 or so allowed.
ztmj96 said:
How did you do it? I've installed the Smart Switch software but the device doesn't appear under the list in emergency software recovery, so I can't proceed.
Click to expand...
Click to collapse
By the sounds of it you're able to boot into twrp? If so then simply boot into twrp, connect to your computer and copy a flashable rom to your phone and install it using twrp instead of odin
1qazwsx4 said:
By the sounds of it you're able to boot into twrp? If so then simply boot into twrp, connect to your computer and copy a flashable rom to your phone and install it using twrp instead of odin
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How could I transfer the flashable ROM to the phone when I can't have it boot up to connect to my computer?
Gallitho said:
Your PC is recognizing your phone? If not maybe you shall update your drivers first. My S6 is the same model number as yours and it does appears in the Emergency Recovery list.
Another solution could be trying to flash using another version of Odin; I saw a similar problem on another forum and it was solved using Odin 3.10 to reflash the stock firmware.
Also remember that you can't downgrade your firmware once that you are on 5.1.1, no 5.02 or so allowed.
Click to expand...
Click to collapse
Since you're using the same model as mine, what are you running on your S6 right now? Are you able to root and flash a custom ROM like XtrestroLite onto Android 5.1.1?
Can you guys help me check if this post has the correct steps or is it missing anything like bootloader and root?
reddit.com/r/GalaxyS6/comments/39wwf6/should_i_install_xtrestolite_rom/cs7b7yq
ztmj96 said:
Since you're using the same model as mine, what are you running on your S6 right now? Are you able to root and flash a custom ROM like XtrestroLite onto Android 5.1.1?
Click to expand...
Click to collapse
Actually yeah. Earlier tonight I flashed XtreStoLite over stock 5.1.1, but I must confess it wasn't as easy as I thought, mainly because I didn't followed the steps in the right way and I ended up having to root my phone through installing UniKernel, which is pre-rooted and that did the trick for me, because I got stuck in the Samsung logo right after I tried to flash with CF-AutoRoot, needless to say I obviously couldn't root with that method and had to reflash stock 5.1.1 firmware to unbrick my phone, install UniKernel, and after that I was able to enter my phone config, uncheck the reactivation block under Find My Mobile settings (which was the reason for me to get stuck at the S-logo) and then flash through Odin XtreStoLite deodexed and Xposed FW too, so I can tell you for sure that SM-G920I can run XSL like a charm.
Gallitho said:
Actually yeah. Earlier tonight I flashed XtreStoLite over stock 5.1.1, but I must confess it wasn't as easy as I thought, mainly because I didn't followed the steps in the right way and I ended up having to root my phone through installing UniKernel, which is pre-rooted and that did the trick for me, because I got stuck in the Samsung logo right after I tried to flash with CF-AutoRoot, needless to say I obviously couldn't root with that method and had to reflash stock 5.1.1 firmware to unbrick my phone, install UniKernel, and after that I was able to enter my phone config, uncheck the reactivation block under Find My Mobile settings (which was the reason for me to get stuck at the S-logo) and then flash through Odin XtreStoLite deodexed and Xposed FW too, so I can tell you for sure that SM-G920I can run XSL like a charm.
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1. So what is the correct order?
2. Did you have to manually unlock bootloader?
3. And is it a must to install uniKernel in order to root the device?
I have no idea how to proceed now.
This requires a lot more effort than I thought :fingers-crossed:
1. The correct order apparently WAS to flash 5.1.1 bootloader and modem over 5.0.2, then root, then TWRP, then flash XtreStoLite, or at least that was what I understood from Edgar's guide (as you can tell, I hurried myself too much and was to excited to flash XLS, so I didn't read properly).
Since I (and I think you did too) installed stock 5.1.1 first, there was no way to autoroot nor ping-pong root the device, that was the reason I got stuck in the Samsung logo screen after trying to autoroot, so I had to reflash stock 5.1.1 to regain access to the device settings/Find My Mobile as I explained before, after that I flashed UniKernel and that did the trick, no other steps were required to achieve root access beyond this point.
2. I didn't had to, but your carrier may have locked yours. My device is a SM-G920I (as yours) from Telcel carrier, so I can tell for sure.
3. There are several others way to root devices running over 5.0.2, but according to my personal research there aren't much options on 5.1.1 other than flash a pre-rooted kernel, but UniKernel isn't the only pre-rooted kernel, so you can choose whichever you like the most.
If I were you the first thing I'd try, as I said earlier, would be to switch to another Odin version or another firmware (as long as it is 5.1.1) and if that don't do the trick, then I'd update drivers and try via Smart Switch again.
Gallitho said:
1. The correct order apparently WAS to flash 5.1.1 bootloader and modem over 5.0.2, then root, then TWRP, then flash XtreStoLite, or at least that was what I understood from Edgar's guide (as you can tell, I hurried myself too much and was to excited to flash XLS, so I didn't read properly).
Since I (and I think you did too) installed stock 5.1.1 first, there was no way to autoroot nor ping-pong root the device, that was the reason I got stuck in the Samsung logo screen after trying to autoroot, so I had to reflash stock 5.1.1 to regain access to the device settings/Find My Mobile as I explained before, after that I flashed UniKernel and that did the trick, no other steps were required to achieve root access beyond this point.
2. I didn't had to, but your carrier may have locked yours. My device is a SM-G920I (as yours) from Telcel carrier, so I can tell for sure.
3. There are several others way to root devices running over 5.0.2, but according to my personal research there aren't much options on 5.1.1 other than flash a pre-rooted kernel, but UniKernel isn't the only pre-rooted kernel, so you can choose whichever you like the most.
If I were you the first thing I'd try, as I said earlier, would be to switch to another Odin version or another firmware (as long as it is 5.1.1) and if that don't do the trick, then I'd update drivers and try via Smart Switch again.
Click to expand...
Click to collapse
What did you use to root? May I ask for the link? I just tried flashing CF AutoRoot and now I think it's bricked again. (RECOVERY IS NOT SEANDROID ENFORCING) I'm thinking it might be due to incompatibility because I got it from here (https://autoroot.chainfire.eu/#odin) and the Android version states 5.0.2.
ztmj96 said:
What did you use to root? May I ask for the link? I just tried flashing CF AutoRoot and now I think it's bricked again. (RECOVERY IS NOT SEANDROID ENFORCING) I'm thinking it might be due to incompatibility because I got it from here (https://autoroot.chainfire.eu/#odin) and the Android version states 5.0.2.
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Click to collapse
Yep, that was the exact moment where mine got stuck too, as I stated before at that time I had to reflash stock firmware. The trouble is caused by CF-Autoroot, it won't work at all when you're on 5.1.1 (at least with SM-G920I) and if you try to root using this method, you'll get stuck with the message "RECOVERY IS NOT SEANDROID ENFORCING". You'll have to reflash to stock too, I'm affraid...
Flash UniKernel via Odin once you're on 5.1.1 stock again and see the magic happen. Once you have root access, gained by this kernel, you can install TWRP and flash XtreStoLite or any other rom you may want. Here is the direct link to the post: http://forum.xda-developers.com/galaxy-s6/samsung-galaxy-s-6--s-6-edge-unified-development/kernel-stockmod-kernel-t3100395
Hope you get lucky.
Gallitho said:
Yep, that was the exact moment where mine got stuck too, as I stated before at that time I had to reflash stock firmware. The trouble is caused by CF-Autoroot, it won't work at all when you're on 5.1.1 (at least with SM-G920I) and if you try to root using this method, you'll get stuck with the message "RECOVERY IS NOT SEANDROID ENFORCING". You'll have to reflash to stock too, I'm affraid...
Flash UniKernel via Odin once you're on 5.1.1 stock again and see the magic happen. Once you have root access, gained by this kernel, you can install TWRP and flash XtreStoLite or any other rom you may want. Here is the direct link to the post: http://forum.xda-developers.com/galaxy-s6/samsung-galaxy-s-6--s-6-edge-unified-development/kernel-stockmod-kernel-t3100395
Hope you get lucky.
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Click to collapse
I just did that before you suggested it and it worked! I was so elated! I love you bro (no homo). Our situations are identical. Now I have XtrestroLite running on the S6! Thank you so much!
Simply put:
1. Update bootloader and modem
2. Install TWRP without root via Odin
3. Install UniKernel via TWRP
4. Install ROMs!
ztmj96 said:
I just did that before you suggested it and it worked! I was so elated! I love you bro (no homo). Our situations are identical. Now I have XtrestroLite running on the S6! Thank you so much!
Simply put:
1. Update bootloader and modem
2. Install TWRP without root via Odin
3. Install UniKernel via TWRP
4. Install ROMs!
Click to expand...
Click to collapse
Glad to read that, dude!
Yep, our situations are identical and also happened at the same time haha.
Now's time to enjoy! :good:

Flashing Stock 6.01 (PG1) from sammobile, the device wont boot post install

Hello everyone, I need some help here.
I downloaded the latest from sammobile
G900PVPU3CPG1_G900PSPT3CPG1_G900PVPU3CPG1_HOME.tar .md5
and ODIN v3.12.3
I placed the tar file in the AP slot, installed everything, I receive the final okay and the phone reboots to the stock samsung boot animation, and just sits.
Does anyone have any idea why I can't seem to get past the boot animation?
I can pull the battery and install TWRP, and boot to recover fine, but no matter how long the device will NOT get past the boot animation.
Is it possible that I have a bad download? Can I "downgrade" to PE2, without risk of bricking the device somehow?
thanks
Before clicking Start on odin, did you uncheck everything else (autoreboot, f-reset time, re-partition)? I followed all the steps here for that same firmware. It worked for me on first try. Also, did you download the appropriate version for your phone? From what I can see there are 4 versions on sammobile, VMU, SPR, XAS, and BST. I have a Virgin mobile phone, so i got the one with product code VMU.
welp I went back to old tried and true V3.09 and used PE2, and then let it boot after a LONG TIME. Then I upgraded to PG1 using the update feature in "about device".
Not sure why I could not use the latest PG1 tar file, direct from sammobile.
Curious though, has anyone been able to "downgrade back to lollipop, just in case? Or has Samsung locked it down.
I tried to go back to OA6, and also OK4 and I got a fail (red) in ODIN using both sammobile stock files.
Amd4life said:
welp I went back to old tried and true V3.09 and used PE2, and then let it boot after a LONG TIME. Then I upgraded to PG1 using the update feature in "about device".
Not sure why I could not use the latest PG1 tar file, direct from sammobile.
Curious though, has anyone been able to "downgrade back to lollipop, just in case? Or has Samsung locked it down.
I tried to go back to OA6, and also OK4 and I got a fail (red) in ODIN using both sammobile stock files.
Click to expand...
Click to collapse
You may have to boot into recovery and factory reset once ODIN has successfully flashed. Should boot after that.
Sent from my SM-G900P using XDA-Developers mobile app

Trying to get my phone back to stock

Hello,
I rooted my s5 way back when it first came out but I haven't upgraded the firmware at all. From what I remember I had trouble installing a custom recovery so the phone is only rooted. I would like to bring it up to the most current version of android. What's the easiest way to do that? I'm on baseband version G900PVPUIAND2.
Thanks in advance.
Edit: I found this https://forum.xda-developers.com/showthread.php?t=2742994 which had a link to the stock factory image but sammobile doesn't seem to be hosting it anymore. Is there another reliable place that I can get it? Or would just doing a factory reset of my phone make it so I can start taking OTA's again?
The latest stock firmware for G900V is Marshmallow QC1. You can download it here and use ODIN to flash it:
https://www.androidfilehost.com/?fid=457095661767155677
If you want to root it you can use CF-Autoroot in ODIN. This will trip Knox if not already tripped (but probably doesn't matter on an older phone like this).
https://download.chainfire.eu/408/CF-Root/CF-Auto-Root/CF-Auto-Root-kltespr-kltespr-smg900p.zip
If you want to install TWRP you can use ODIN again:
https://twrp.me/devices/samsunggalaxys5qualcomm.html
Good luck.

Using SM-G20T on AT&T (which CSC?)

I got a T-Mobile S6 from a friend, and I'm trying to do whatever I can to enable using it on AT&T. I think a custom ROM might be nice, but I'm stuck on this CSC business.
It was weirdly flashed before, so I flashed it back to stock using Odin and a recent image from sammobile.
The image was G920TUVU5FQG3_G920TTMB5FQG3_TMB
Device: SM-G920T
Android Verson: 7.0
Baseband: G920TUVU5FQG3
Kernel Version:
3.10.61-11187574
[email protected] #1
Any advice is appreciated. I'm confident enough to flash TWRP and other things on the phone. (I've done some NAND hacking in my day.)
I'm just lacking some concise instruction/direction.
I assume I need to
1) Flash TWRP using Odin
2) Root the phone by flashing SuperSU or Magisk
3) Flash AT&T compatible ROM using TWRP
What am I missing with the CSC stuff? Do I need files from somewhere? When I tried to go through the install for "Ultimate Nougat 2.0" I got stuck on the which CSC, because it didn't appear to have a CSC compatible with AT&T/USA.
The goal is to use this phone on AT&T, hopefully with a decent debloated ROM that is as close to native google android as possible and doesn't have any vendor nonsense.
Thank you for your time.
You don't need to do anything regarding to CSC stuff.
Just flash TWRP and do whatever you want to do.

Lost IMEI and baseband, ODIN keeps failing

Hello, I'm getting crazy and I don't know what to do anymore.
I have been using the Oreo Rom in the last few days and I wanted to go back to stock firmware using Odin.
I downloaded the last firmware available for my country (ITV) and installed Odin.
The app kept failing when trying to flash and I wasn't able to install the firmware. I tried by flashing only the AP file and I was able to delete TWRP and install the stock recovery. The phone booted up but it acted strange (the touch screen was unresponsive). So I tried to align the CSC using Odin but it kept failing when trying to flash the BL.
I then flashed all files (AP, CP and CSC) without the bootloader and now I have no signal.
Please help me! How do I restore my baseband?
You cannot flash an older baseband through Odin than the one you're on at the moment, at least that's what I was fighting with a few days ago. Check that you're really flashing the latest stock FW and that its baseband is the same as the last one that worked or newer.

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