Bootloop/screen replacement... - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

hi everybody
I ll try to make as short as possible.
I just replaced screen at shop(normally original one). The phone worked as usual for 3 days. suddenly after a reboot, the phone bootloop again and again. I have only access to recovery mode, the download mode is not available. When i select "reboot to bootloader", it give me only a red line almost not readable.
I made wipe factory reset and wipe cache, nothing help.
I was on android 11, root with magisk before that.
I try lot of solutions but nothing work.
if anyone can help.
sincerly.

Related

Whenever I restart the phone it stucks on boot and I have to use factory reset.

Hi,
I have been using ICS for Desire for 1 year. Thanks to this mod I don't even want to buy a new smartphone instead of using my 2.5 years old HTC desire.
However, for 2 weeks I'm having some problems with my phone. When I try to restart the phone, it stucks in boot screen (that has a text "evolver" on the screen with a nice animation) and it doesn't start (I waited ~10 hours). (BTW during the boot the phone is heating up)
I tried "Wipe cache partition" and "Wipe Dalvik Cache" in Clockware Recovery but the problem isn't solved. Then I decided to try another rom "PARANOIDANDROID" (http://forum.xda-developers.com/showthread.php?t=1912187) but same problem occured and it couldn't pass the boot screen.
Then I tried "Factory reset" and the phone successfully started at first. Then I realized that whenever I restart the phone, it still stucks in boot screen and I have to reset all user data with "Factory reset".
I couldn't figure out how to solve this problem, can anyone help me?
Note: The phone is S-ON and the problem suddenly occured and I didn't install/remove something from the phone.
This might be related to the google play store updating to the latest version. It is known to cause a boot loop on every restart for some ICS ROMs. Try this if it helps: http://forum.xda-developers.com/showpost.php?p=33793990&postcount=16742

G3 won't factory reset after bootloop

So, i bootlooped my device somehow, and now I'm trying to factory reset the damn thing. problem is, I go to the recovery screen, where I can choose safe mode, clear cache, and factory reset. I click factory reset, and the little android alien pops up for 1-2 seconds, and then it goes black and the phone restarts. In other words, its not letting me factory reset for some reason.
Please help asap!!
cap1tal1sm said:
So, i bootlooped my device somehow, and now I'm trying to factory reset the damn thing. problem is, I go to the recovery screen, where I can choose safe mode, clear cache, and factory reset. I click factory reset, and the little android alien pops up for 1-2 seconds, and then it goes black and the phone restarts. In other words, its not letting me factory reset for some reason.
Please help asap!!
Click to expand...
Click to collapse
try to flash the same kdz. It will work.
xathanatosx said:
try to flash the same kdz. It will work.
Click to expand...
Click to collapse
wtf? I never installed a custom ROM or anything. just a custom boot animation and a build.prop edit, and one of those two things boot looped my rig. when i try to factory reset via the hardware buttons, it restarts after 1 second of trying and goes back into the bootloop. i try ever different setting on the recovery screen, and they all have the same result (either safe mode, or delete cache)
how else can i factory reset so i can get my phone back'??

Fire Phone Won't Go into Download Mode

I'm not entirely sure if this is where I should post this, but I am having a problem with my Fire Phone and I really hope you guys can help.
So, story time. I was thinking that I wanted to install a new ROM on my phone just to try some new things. I decided on the SlimKat android 4.4.x ROM and I installed it with GAPPS using SafeStrap 4.01. However, the new ROM was not working correctly so I thought I installed it wrong. So, I read up a little bit more on this and it said that I had to do a factory restore beforehand so I did it with high hopes that it would work. However, it sill did not work. What happens is that I power it on, it asks whether I want to go into SafeStrap or not, it continues if I say no, and they it starts with SlimKat. After about 20 seconds, it stops the starting animation and starts its boot loop.
Since I factory restore it, I had no back ups or and ROMs that I could install on my device. I try to plug it into my computer but it is unrecognizable even if it is the recovery. I also tried going into download mode, doing it multiple ways, but with not luck. It still goes into the boot loop. I factory reset it multiple times but still with no luck. Within SafeStrap, I tried to wipe it, but it is unable to wipe the Dalvik Cache or Data. If there is any way that I can move the stock ROM onto my phone, it would solve all my problems. If any of you have any ideas, please let me know.
I having same problem. Unable to go to recovery mode in normal way, but I could managed to go to recovery by attaching it to computer with usb cable and keeping pressing power + Vol up key for few seconds.
Then I tried Factory restore, Adb Sideload original file downloaded from amazon, but the problem still not solved.
My phone is keep flashing amazon logo in loop.
If any one have idea please help.

Black screen LG G4 H812?

screen went black, and now I cant do anything. Phone boots normally. LED indicator at the top shows that the phone is booting fine. (the top half also gets super hot for some reason?)
Any ideas on how to get it back? Or is it bricked?
DzXAnt22 said:
screen went black, and now I cant do anything. Phone boots normally. LED indicator at the top shows that the phone is booting fine. (the top half also gets super hot for some reason?)
Any ideas on how to get it back? Or is it bricked?
Click to expand...
Click to collapse
If you are still on the stock recovery originally installed, see if you can boot it manually into Recovery mode. If the screen shows in Recovery mode, chances are you have developed a corruption from something you installed etc., not bricked it. You can try wiping Cache when in Recovery mode but I suspect you will have do a Factory Reset from there. If you have installed a custom recovery and have a known good backup, you could restore that or re-install the rom in a clean flash (wiping Cache, Dalvik cache, System and importantly, format Data > Yes.
Failing that, you may have to replace the screen or send it in for repair if it is a hardware issue.
sdembiske said:
If you are still on the stock recovery originally installed, see if you can boot it manually into Recovery mode. If the screen shows in Recovery mode, chances are you have developed a corruption from something you installed etc., not bricked it. You can try wiping Cache when in Recovery mode but I suspect you will have do a Factory Reset from there. If you have installed a custom recovery and have a known good backup, you could restore that or re-install the rom in a clean flash (wiping Cache, Dalvik cache, System and importantly, format Data > Yes.
Failing that, you may have to replace the screen or send it in for repair if it is a hardware issue.
Click to expand...
Click to collapse
I just flashed a 100% stock rom with putting the phone in download mode and using LGUP, same problem... Guess it's bricked :/
It's not even worth it to repair, I just wanted to see if I could fix it myself
Thanks anyways
DzXAnt22 said:
I just flashed a 100% stock rom with putting the phone in download mode and using LGUP, same problem... Guess it's bricked :/
It's not even worth it to repair, I just wanted to see if I could fix it myself
Thanks anyways
Click to expand...
Click to collapse
If you were able to see the download mode screen, it is more than likely not a hardware issue. You have to do a full wipe (preferably, Cache, Dalvik cache, System and Data (best would be a format of the data partition), to get rid of any data/rom corruption that may be causing the black screen issue. If you did not do this, try that first, making sure you re-install the same original rom that the phone came with, before junking the phone.
Note: Don't forget to click the Thanks button (bottom right of post), when members answer your questions or provide useful information when trying to help. It's an XDA courtesy - please learn to use it.

samsung s4 tablet t837t boot loop after flash

Hello everyone. I'm trying to flash a samsung s4 tablet t837tuvs4ct13. The flash goes normal, but after the tablet restarts it goes to a blue screen that says erasing for a split second, then goes back in to the boot loop. I do perform the wipe cache and factory wipe before each flash. The device was in a boot loop when I got it and factory wipe did not fix it. Does anyone have any advice on how to fix this problem?
Thank you in advance for any help.
castilla12 said:
Hello everyone. I'm trying to flash a samsung s4 tablet t837tuvs4ct13. The flash goes normal, but after the tablet restarts it goes to a blue screen that says erasing for a split second, then goes back in to the boot loop. I do perform the wipe cache and factory wipe before each flash. The device was in a boot loop when I got it and factory wipe did not fix it. Does anyone have any advice on how to fix this problem?
Thank you in advance for any help.
Click to expand...
Click to collapse
Most likely the device was locked by the person you got it (??)
Without the correct pin, password, or account details,if factory reset protection (FRP) has been set in an android device, then the device is almost dead..
First than all : The most important part is to allow "adb debugging" from developer menu on your device ! If it is enabled there may be a solution ...
1) https://www.hardreset.info/FRP-Unlocker/
2) https://www.sammobile.com/samsung/galaxy-tab-s4/firmware/SM-T837T/TMB/download/T837TUVS4CTI3/417067/
(you can use "google search" and learn more Info about FRP)

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