I have an stock S8 that is boot looping. Do you think rooting or installing an different Rom is possible? - Samsung Galaxy S8 Questions and Answers

It's been a few years since I've done anything like this.
I can get into the recovery menus and wiped the device. It still won't boot normally or in safe mode.
Also if it's possible, what Rom would you recommend? I'm a Pixel user and really like it's UI.

kent c said:
It's been a few years since I've done anything like this.
I can get into the recovery menus and wiped the device. It still won't boot normally or in safe mode.
Also if it's possible, what Rom would you recommend? I'm a Pixel user and really like it's UI.
Click to expand...
Click to collapse
I recommend to first flash a stock firmware to fix the bootloop.
You can check and download stock Samsung firmware files with Frija (https://forum.xda-developers.com/t/tool-frija-samsung-firmware-downloader-checker.3910594/) and then flash it with Odin.
Check latest stock firmware available for your device first then you can decide if you want to test a custom rom.

I flashed the official ROM but my phone hangs on Samsung logo screen. When I open stock recovery (as I don't have custom one), it says dm-verity verification failed and when I boot up my phone, it goes straight away to stock recovery and logs show recovery reason unknown no such file or directory. I have tried flashing multiple times but no luck. Odin flash is always successful.

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[Q] Help! "Could not do a normal boot" Cant get past download screen

My S4 is stuck on the download screen every time I boot it goes straight to the download screen with the message "Could not do a normal boot."
I have tried to flash recoveries but its still the same. I also tried using the key combination to bring up the option to reboot but it reboots back into download mode.
I was flashing some new 4.4 roms and then I don't quite recall how it precisely happened. I may have been updating my clockwork mod as I was trying to recover some sms from nandroid backups.
re: download mode
jacoblam said:
My S4 is stuck on the download screen every time I boot it goes straight to the download screen with the message "Could not do a normal boot."
I have tried to flash recoveries but its still the same. I also tried using the key combination to bring up the option to reboot but it reboots back into download mode.
I was flashing some new 4.4 roms and then I don't quite recall how it precisely happened. I may have been updating my clockwork mod as I was trying to recover some sms from nandroid backups.
Click to expand...
Click to collapse
You are lucky to have use of the "Download Mode".
First thing you need to do is to find the correct and specific
Odin Flash official stock firmware/rom for your phone.
Best place to find and download the official and specific stock firmware/rom for your phone is:
http://SamMobile.com .
Good luck!
Ok I've recovered and can boot into stock rom. However now I cant flash any custom roms after rooting and flashing CWM again. It says "This package is for 'jfltexx' devices; this is a 'jflte.' My device is an unbranded i9505 international, I bought it unlocked and can use any provider. How do I fix this error?
I've tried multiple roms already.
Just flash a different kernel the same thing happened to me when I flashed an at&t kernel.

safestrap....unable to mount /system...potential brick??

have rooted s5 on 4.4.4 nk2. Have been trying to install custom roms via safestrap. Apparently i am missing a step. I wipe data, try to install twi5ted Lollipop on custom rom slot....blank screen for over 30 min after reboot, phone gets real hot, take battery out. Try to install on stock rom slot, reboot then get stuck in boot loop and keeps booting into system recovery. I then saw through my hours of searching to format instead of wipe....so i format then try to install, get stuck again, take battery out, get back to safestrap dash now when i try to wipe/format/or even restore my backup it says unable to mount system. When i click reboot system it says no OS installed. After reboot, my custom slot gets erased.
I was about to try an odin flash back to stock but some how was able to get my phone back to a system restore. Why can i not get anything installed? Do i have to have odin to do a custom rom install?????? i know every rom is different but wtf. I have seen multiple videos and threads of people flashing zip via safestrap and rebooting into new rom without flashing kernals via odin or safestrap after rom install.
Also...my phone will not let me download zip files (ex. cm12.1) says unable to create download folder....how close to F'in my phone up am i? I have successfully rooted all phones in the past...s5 is giving me hell!
I just tried installing rom after format, then flash nk2 kernel from odin, still gives boot loop....ive tried everything i have found..never this much problem with custom rom..
When you try to install twisted it needs lollipop firmware which is flashed on odin, and based on your statement it says you're on NK2, a kitkat firmware. Try flashing a stock ncg tar and rerouting, downloading apps, etc. on the phone to see if that works. Also, I noticed you mentioned a cm 12.1 zip not downloading which, while unrelated to your current problem, will cause a bootloop when flashed due to the locked bootloader on the S5, so it isn't a smart idea to even attempt an install.
mrjiggywiggy said:
When you try to install twisted it needs lollipop firmware which is flashed on odin, and based on your statement it says you're on NK2, a kitkat firmware. Try flashing a stock ncg tar and rerouting, downloading apps, etc. on the phone to see if that works. Also, I noticed you mentioned a cm 12.1 zip not downloading which, while unrelated to your current problem, will cause a bootloop when flashed due to the locked bootloader on the S5, so it isn't a smart idea to even attempt an install.
Click to expand...
Click to collapse
thanks, i will try fresh from start ncg. so you have to be on the current kernel that you are flashing a rom for, whether its CM, Twi5ted, Alliance...etc i need to be on rooted 5.0 kernel then flash rom via safestrap?
i was having problems downloading from internet on phone, not downloading rom if thats what you thought i meant. I just tried installing zip for CM 12 via safestrap and got same issue. Phone reboots, goes to black screen and eventually heats up like crazy. .... I just noticed, after my restore ...again... it says safestrap disabled in red on the boot screen, why is that? it says installed and tried reinstalling.
FIXED
So i flashed ncg from odin on the messed up phone and got messed up worse. Ended up getting stuck on first boot image of samsung android s5 boot screen. Finally found original stock firmare file and used odin to complete install stock os and got rid of root. Now back to normal... luckily i figured it out my self! thanks to the 100's who viewed and didnt help and thanks to mrjiggywiggy for giving me some input to help out!

Might have Bricked S7 Edge SM-935FD. Need Help to recover

Hello guys
My phone is Galaxy S7 Edge Duos- SM935FD. I seem to have bricked the device.
Below are the actions I have performed.
1. Flashed TWRP using ODIN as described on https://www.the***********.com/root-samsung-galaxy-s7-edge/
2. Booted successfully into the OS. Found superuser app installed.
3. When I went to back to Flash ROM i erased multiple things such as internal storage/dalvik/cache/system after which device got stuck in bootloop. Showing NO OS.
4. I tried flasing Custom ROM Zip files through OTG. The process failed showing package corrupt and still stuck in bootloop.
I can enter recovery/download mode however cant seem to get the device booted. How can I get the device to work either Custom or stock ROM.
I will be going through some threads in the meantime, your guidance is very much appreciated.
Flash stock rom with Odin: This shouldnt be posted on Development Forum but rayher questions and Answers.
Find what your Stock Firmware for your phone is using Sammobile and flash stock then re do rooting and TWRP Process
zzThrain is right -- I wouldn't risk flashing custom ROMs at this stage, especially because many contain new bootloaders or other stuff that might make this even worse for you. Just pick up the relevant Samsung stock ROM file (from, for example, SamMobile) and see if it boots normally again. Once it does, re-do the process *after checking all MD5s of the files you used* -- I, too, have had it happen before that a download went corrupted and I flashed it. If all is well, get into Download Mode and let Odin rip.
rixon.d9 said:
Hello guys
My phone is Galaxy S7 Edge Duos- SM935FD. I seem to have bricked the device.
Below are the actions I have performed.
1. Flashed TWRP using ODIN as described on https://www.the***********.com/root-samsung-galaxy-s7-edge/
2. Booted successfully into the OS. Found superuser app installed.
3. When I went to back to Flash ROM i erased multiple things such as internal storage/dalvik/cache/system after which device got stuck in bootloop. Showing NO OS.
4. I tried flasing Custom ROM Zip files through OTG. The process failed showing package corrupt and still stuck in bootloop.
I can enter recovery/download mode however cant seem to get the device booted. How can I get the device to work either Custom or stock ROM.
I will be going through some threads in the meantime, your guidance is very much appreciated.
Click to expand...
Click to collapse
Go to recovery mode & transfer rom to phone using pc. wipe cache, delvikcache, data only. No need to wipe internal sd. Install rom & reboot.
if you phone goes to recovery or download mode, no need to worry. If it doesn't go to neither recovery nor download mode, them your phone might have probably bricked.
It's my pleasure to help you if you still facing this problem
zzThrain said:
Flash stock rom with Odin: This shouldnt be posted on Development Forum but rayher questions and Answers.
Find what your Stock Firmware for your phone is using Sammobile and flash stock then re do rooting and TWRP Process
Click to expand...
Click to collapse
Hi
I tried flashing stock rom from sammobile. I could find for SM-935FD hence downloaded SM-935F.
It got stuck at 90% showing System in ODIN.
From the ZIP file which is the file that needs to be flashed among below ? I tried AP.
AP_G935FXXU2DRB6_CL12365438_QB16944063_REV00_user_low_ship_meta.tar
BL_G935FXXU2DRB6_CL12365438_QB16944063_REV00_user_low_ship.tar
CP_G935FXXU2DRAG_CL648265_QB8691891_SIGNED.tar
CSC_OJV_G935FOJV2DRAG_CL12785220_QB16560277_REV00_user_low_ship.tar
HOME_CSC_OJV_G935FOJV2DRAG_CL12785220_QB16560277_REV00_user_low_ship.tar
Now when I try again it immediately shows FAIL. Am i Flashing the right stock rom ?
It Worked. Thanks to all who helped.
I wasn't running ODIN as Admin and also was using an slightly older version V3.10.7.

S8 G950F - stuck on verification following unroot.

hi
ive got a s8, which was rooted using magisk, but was having issue, so was advised to unroot, remote and try superSU instead.
in the process of flashing stock rom AND 8.0, the phone now boots up to black screen showing verification failed, only option to reset.
when i press reset, all it does is restarts, loads up TWRP which had been installed before,
TWRP runs some program and fails and then phone goes back to black screen showing verification failed.
ive booted it into download mode, in the hope that i can just start again by simply lashing fresh stock rom, but it connects to odin fine, but when i click start, it gives a red error every time.
so i cant access the standard recovery menu as ive got TWRP so that loads instead and it looks as that is corrupted and i cant flash new fresh rom from download as odin brings up issue
ive check another phone and there is no issue with odin or the usb-c cable,
there is an issue with the s8 and odin does not like something in the s8 so wont let me flash anything to it,
any advice would be greatly appreicated.
When you flashed the stock rom using odin did you flash a bootloader aswell as the rom or did you just flash the rom the problem might be that the bootloader was for pie and the rom is oreo or vice versa whenever I flash back to stock I fill all but one of the boxes in odin
i suspect it was all oreo, as i downloaded as a complete file but ill check and get back to you
thanks for advice.

[sm j730f] Bootloader fail and TWRP boots into black screen

Greetings everyone,
I decided to post my problem with my phone after searching the entire internet for similar problem but with no luck. Anyway I used to play around with my Samsung j7 pro for 2 years, I managed to flash twrp and thus many other custom roms, until last week when I recklessly flashed a sboot.img.tar file through Odin in order to fix cellular network in a rom I flashed earlier, this alone bricked my phone refusing to get past the Samsung logo, so like I do always, I tried to restore my phone by flashing the stock firmware (9.0) which I always keep on my PC, but surprise, the phone refuses to go through the process and gives me this error:
sw rev check fail bootloader device -1 binary 6
(same with 8.0 and 7.0 firmware)
I searched the internet for same error but with no luck, because I understand it's a mismatch between device bootloader current version and the firmware bootloader's, that they should be the same or higher, meaning you can't downgrade, I get that! but I never seen device with negative figure (-1) what that's supposed to mean? my device bootloader used to be on 6, how did it managed to jump to minus one ?
then I tried to flash TWRP to see if I could flash a rom and get around it, so I did, but when booting into recovery the screen goes black, I thought first the phone turned off, but not really, because TWRP seems to work with screen completely black, I knew that because I accidentally touch the screen and I sense vibration, I managed to reboot the phone via twrp just by guessing the buttons location (screen always black) in order to prove that TWRP is working with screen off. I tried to flash multiple TWRP versions but the same problem, no screen just touch, by the way there is nothing wrong with display hardware because it shows Samsung logo at start and also can boot into download mode just fine.
I hope someone could help me overcome this big of an issue, because I tried everything.
Where did you find such sboot.img.tar file?
death.by.confusion said:
Where did you find such sboot.img.tar file?
Click to expand...
Click to collapse
Here
https://forum.xda-developers.com/ga...ow-to-fix-sim-cards-didnt-read-j730f-t3939685
Michelyn50 said:
Here
https://forum.xda-developers.com/ga...ow-to-fix-sim-cards-didnt-read-j730f-t3939685
Click to expand...
Click to collapse
First, can you try installing any custom rom, blindly(since you said the screen is black when you boot in recovery).
Second, can you try flashing stock firmware without the BL part in Odin?
death.by.confusion said:
First, can you try installing any custom rom, blindly(since you said the screen is black when you boot in recovery).
Second, can you try flashing stock firmware without the BL part in Odin?
Click to expand...
Click to collapse
I tried blindly many times flashing any custom rom but with no luck since it's really hard predicting the buttons location on the screen, I probably need another phone replica with working twrp to mimick the exact moves.
For stock firmware, I manage to install it without BL but when booting it's just stuck on the Samsung logo, and when booting into stock recovery nothing just black screen, and booting into download mode it seems that the installation didn't change the binary -1, since I could see it on the screen
death.by.confusion said:
First, can you try installing any custom rom, blindly(since you said the screen is black when you boot in recovery).
Second, can you try flashing stock firmware without the BL part in Odin?
Click to expand...
Click to collapse
This is a screenshot when I try to install stock firmware (with BL)
https://m.imgur.com/a/9vuFqTX
Can you try flash other sboot files from the link you gave me? Try to flash some sboot file, and then make full flash of your stock firmware.
If not, maybe you can try flashing sboot with heimdal https://www.glassechidna.com.au/heimdall/
I have the same issue, any help or advice?
Flash Ășltimo bootloader e modem CP
Flash Any Custom ROM
Did you flash misc partition ?
If your device keep booting in blackscreen, you need to erase misc partition.
Here, is the guide for erasing MISC partition: https://forum.xda-developers.com/t/...omi-redmi-note-9-xiaomi-redmi-10x-4g.4209299/
The guide is for REDMI NOTE 9, so if you try to perform the method 1, you can cause more damages to your device.
Please, follow METHOD 2 only !
If TWRP is not working perfectly, obviously you need to flash stock rom recovery.img.
Good luck

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