Bootloop? Please help - Samsung Galaxy S8+ Questions & Answers

My s8+ phone is stuck in a loop and i cant seem to fix it. The model is an SM-G955U. It is currently stuck with a screen flashing 'installing system update' and a black screen. I've tried to boot into recovery mode but all attempts have failed(gives failed to open recovery cause no file or such directory). Am i completely bricked? Id like any help that i can get. Thanks.

HelpPlease2121 said:
My s8+ phone is stuck in a loop and i cant seem to fix it. The model is an sm955u. It is currently stuck with a screen flashing 'installing system update' and a black screen. Ive tried to boot into recovery mode but all attempts have failed(gives failed to open recovery cause no file or such directory). Am i completley bricked? Id like any help that i can get. Thanks.
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Download mode, flash stock image from sammobile.com etc with Odin 3.13.1

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[Q] my device soft bricked

My device all the sudden restarted and entered now a continues restart booting. the Samsung logo appear only and device restarts.
I tried to install a new stock rom with odin, but i keep getting Fail error. tried to install a stock recovery with odin but fail error is what am getting too...
the device boot to download mode only and i cant boot to recovery mode.
I didnt download custom rom or recovery didnt root. the device out of no where bricked any help is appreciated...
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[Completed] LG K7 stuck in boot loop

My lg k7 is stuck in boot loop. I tried to reboot my phone into recovery so I could flash a new rom and get rid of my virus, but it went horribly wrong. I tried to boot it via TWRP using rom manager. I used rom manager because the app flashify wasn't working. When I tried to boot my phone into recovery via twrp using flashify it gave me the error "Secure booting error! Error Code : 1003 MODIFIED ! !" Then my device booted back up, but when I tried it with Rom manager which I didnt even install anything I was stupid and tapped boot into recovery mode, now im stuck in boot loop with the same "Secure booting error! Error Code : 1003 MODIFIED ! !" Error. I have tried to factory reset my device in the recovery mode, but it does literally nothing, and just throws me back into the bootloop. The model is m330.
Totalchaos32 said:
My lg k7 is stuck in boot loop. I tried to reboot my phone into recovery so I could flash a new rom and get rid of my virus, but it went horribly wrong. I tried to boot it via TWRP using rom manager. I used rom manager because the app flashify wasn't working. When I tried to boot my phone into recovery via twrp using flashify it gave me the error "Secure booting error! Error Code : 1003 MODIFIED ! !" Then my device booted back up, but when I tried it with Rom manager which I didnt even install anything I was stupid and tapped boot into recovery mode, now im stuck in boot loop with the same "Secure booting error! Error Code : 1003 MODIFIED ! !" Error. I have tried to factory reset my device in the recovery mode, but it does literally nothing, and just throws me back into the bootloop. The model is m330.
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Greetings and welcome to assist. It sounds like you may have a locked bootloader, there are 2 excellent threads here that will help you recover your device and flash twrp
https://forum.xda-developers.com/an...ck-firmware-rom-unbrick-lg-k7-k330-t-t3432878
https://forum.xda-developers.com/general/general/qa-metro-pcs-lg-k7-lgms330-t3331678
Good Luck
Sawdoctor
Thanks mate
Than you so much, It worked

S8+ stuck on boot screen after QF7 flash

I tried to flash TWRP on my S8+ and my phone got a bootloop . Then i tried to root it by Odin(SuperSU) and after the boot screen an error "Verification failed" came. Then I flashed the QF7 BL from Odin in the BL tab( which was a success in the first try), but then instead of a bootloop, the screen was stuck on the boot logo. I cant access TWRP now but can access download mode. I then tried to flash TWRP again but i cant access it( Odin shows successful).
Please help what can i do?? SM-G955F. OEM unlocked.
Thanks.
u need to flash BL,AP,CP,CSC (frimware ) files all together to get back to factory defaults
next time flash custom kernel using twrp after flashing twrp

I am stuck at unlocked bootloader warning screen (Samsung m21)

My phone suddenly stopped working and after a reboot i got stuck at the unlocked bootloader screen . It says to press the power button to boot but nothing happens. So I flashed stock firmware using odin v3 but the same issue. I tried fixing the partitions in twrp recovery but it gives me an error saying " Failed to mount metadata - invalid argument. So lastly I used Odin PIT flash with rewrite partition but it still stuck at warning screen I only able to access Recovery mode and download mode . Does anyone have a solution ? Please help

A51 SM-A515F BRICK NEED HELP

Hello everyone, first i'm french so my english is not very good..
Few month ago (about on may 2021) i root my phone with twrp and magisk everything was good, but since october when i wake up my was restarted and totaly brick ..
I don' know why ..
I can acces to download mode or recovery mode, usb on pc is not appear..
It stuck on the screen "This phone's bootloader is unlocked (...)"
I have in this phone a big part of my hollidays pictures with my girlfriend so if si possible to recover before data loss help me please
Yeah, No big deal. You have to reflash Stock Firmware, you could find the Files online, then you must use Odin to flash the files, when your Phone is in Download Mode. I don't know if it is possible to keep your Data, because after an normal reflash everthing, what isn't saved in the an Coud will be gone. I'm not sure anymore, but maybe it is possible to keep your Data, wehen you flash home_csc and not csc with Odin
I try so many firmware nothing happen the phone still on samsung screen
Just click power button few times, and your phone should boot
LudovicM said:
I try so many firmware nothing happen the phone still on samsung screen
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Can you boot into Odin/Download Mode? IT should tell you your Modelnumber, bei sure you download a Firmware for your exact Phone
TFang01 said:
Can you boot into Odin/Download Mode? IT should tell you your Modelnumber, bei sure you download a Firmware for your exact Phone
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Click to collapse
Yes i can enter in Download Mode, i have download firmware form samfirm, sammobile etc.. and it's not boot on the phone it's stuck on samsung logo or loop on samsung logo
Can you somehow access your bootmenu? If not try to flash twrp, when you are able to Boot into one of then i can help you further
LudovicM said:
Yes i can enter in Download Mode, i have download firmware form samfirm, sammobile etc.. and it's not boot on the phone it's stuck on samsung logo or loop on samsung logo
Click to expand...
Click to collapse
Can you somehow access your bootmenu? If you couldn't, then try to flash twrp, when you are able to boot into one of them i can help you further
Hello,
I have similar problem with my sm-a515f phone. Is bricked and tried all official firmwares, flash, etc to bring it to live. Does not pass the Samsung logo, bootloader is locked and cannot flash combination either. Bootloader is version 5 already.
Did you manage to fix it?!
Any help please?!
Hi
can everybody tells me where can i find links for official firmware android 12 ?

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