boot loop problem - Galaxy S III Q&A, Help & Troubleshooting

boot loop problem - Galaxy S III Q&A, Help & Troubleshooting

hi, i ve been using cm 11 nightly for about 5 months or so, was running smoothly till last night. while i was surfing on the internet on my phone, phone shut down and found it in an infinite loop, get the cm logo and samsung then, closes. what the heck just happened? i intstalled cm via installer only took 15 20 mins. so i m not familiar with the twrp and other stuff. Please help me

I think you should install a new rom via TWRP. Just google the process. Don't worry. Take the risk.
As long as you follow the instructions, Everything's gonna be fine.
sorry bad english

gpjm15 said:
I think you should install a new rom via TWRP. Just google the process. Don't worry. Take the risk.
As long as you follow the instructions, Everything's gonna be fine.
sorry bad english
Click to expand...
Click to collapse
well, my laptop didnt recognize the phone, but tried hard could get it done, and install stock rom with odin but, now its stuck on the samsung logo now, an infinite loop. dont know what i can do anymore

I haven't encounter that problem before. Did you try using Custom Recovery? Becauase you install ROMs via ODIN.

mel_un said:
well, my laptop didnt recognize the phone, but tried hard could get it done, and install stock rom with odin but, now its stuck on the samsung logo now, an infinite loop. dont know what i can do anymore
Click to expand...
Click to collapse
1) make sure that you have the latest usb drivers and the latest odin version
2) run odin as administrator and locate your stock rom
3) power off the phone
4) press and hold power home and volume down buttons simultaneously
5) connect your usb cable to your device
6) press volume up to continue
(at this point you should see that odin added your device, if so => start)
7) wait until flashing is done
8) unplug the phone when it says so (you'll see pass or done message)
9) wait up to 15 minutes just to be sure that its actually stuck on boot (i once waited 20 min to start :S)
10) if the phone dont start after 15 min then press and hold power home and volume up button simultaneously
11) in recovery mode wipe data/factory reset and wipe cache partition
if this doesnt help im sure that someone from the forum will come up with the solution you just have to be patient
cheers mate

drtifetfak said:
1) make sure that you have the latest usb drivers and the latest odin version
2) run odin as administrator and locate your stock rom
3) power off the phone
4) press and hold power home and volume down buttons simultaneously
5) connect your usb cable to your device
6) press volume up to continue
(at this point you should see that odin added your device, if so => start)
7) wait until flashing is done
8) unplug the phone when it says so (you'll see pass or done message)
9) wait up to 15 minutes just to be sure that its actually stuck on boot (i once waited 20 min to start :S)
10) if the phone dont start after 15 min then press and hold power home and volume up button simultaneously
11) in recovery mode wipe data/factory reset and wipe cache partition
if this doesnt help im sure that someone from the forum will come up with the solution you just have to be patient
cheers mate
Click to expand...
Click to collapse
thanks buddy, i ll try and see how it ends

waiting for 30 mins didnt help but i wiped cache and data, now i have the phone running gonna install another cm now, thanks a lot

mel_un said:
waiting for 30 mins didnt help but i wiped cache and data, now i have the phone running gonna install another cm now, thanks a lot
Click to expand...
Click to collapse
Add the CSC and the BL files too with the .tar.md5 file in their respective places. And then start the process
tra_dax

mel_un said:
waiting for 30 mins didnt help but i wiped cache and data, now i have the phone running gonna install another cm now, thanks a lot
Click to expand...
Click to collapse
no problem mate, glad to see my experience of flashing roms and skipping heart beats are actually helping someone.
hit THANKS if i helped, i appreciate it
cheers

Related

Helphelphelphelp!!!!

OK so I tried to root my Galaxy tab 10.1 lte.
I downloaded the files from here http://forum.xda-developers.com/showthread.php?p=16993221#post16993221
then i put them on my tabs sd card
then i rebooted my tab into the stock recovery mode
I installed the package
then i rebooted
everything was working fine, i had superuser now
then I got rom manager from the store
then I used rom manager to flash CWM
then I tried making a backup and rebooting
now i have bootloop
plzplzplzplzplzplzplzzzzz help me!!!!!

chiefobama27 said:
OK so I tried to root my Galaxy tab 10.1 lte.
I downloaded the files from here http://forum.xda-developers.com/showthread.php?p=16993221#post16993221
then i put them on my tabs sd card
then i rebooted my tab into the stock recovery mode
I installed the package
then i rebooted
everything was working fine, i had superuser now
then I got rom manager from the store
then I used rom manager to flash CWM
then I tried making a backup and rebooting
now i have bootloop
plzplzplzplzplzplzplzzzzz help me!!!!!
Click to expand...
Click to collapse
Clear Cache and Dalvik

how do I do so? I'm getting bootloop and cannot use recovery mode

chiefobama27 said:
how do I do so? I'm getting bootloop and cannot use recovery mode
Click to expand...
Click to collapse
Hold down the power button (takes 10 seconds or so), then when the reboot process is called hold down the volume button closest to the power button. Hold both of these until you get to the download/recovery menu and then you should know what to do from there.

sendan said:
Hold down the power button (takes 10 seconds or so), then when the reboot process is called hold down the volume button closest to the power button. Hold both of these until you get to the download/recovery menu and then you should know what to do from there.
Click to expand...
Click to collapse
Ok. I used odin to flash a stock version. now theres no boot loop, and i can use CWM. when I try to reboot, Nothing really happens. Does it just take a long time to reboot or...?
btw thanks for all the help

It can take a while for the first boot because the system has to re-build the cache. It won't take longer than 15 minutes though.

Thanks for all the help guys, I fixed it I ended up reverting it back to out-of-the box state w/ SU. altho I am having 1 small problem. its been like a half hour so far and it has not prompted me with the system update from 3.1 to 3.2. What can I do?

chiefobama27 said:
Thanks for all the help guys, I fixed it I ended up reverting it back to out-of-the box state w/ SU. altho I am having 1 small problem. its been like a half hour so far and it has not prompted me with the system update from 3.1 to 3.2. What can I do?
Click to expand...
Click to collapse
Manually check for it or just use Odin to flash the newest file...from http://www.sammobile.com if the manual check didn't work.

Help unbrick TFP (looks like opt 3) please

Hello,
about 2 hours ago I decided that I would unlock my device (before that I read maximum informations that I could). Unlocking went fine and I also installed TWRP 2.1.3 (through ViperMod). So far so good.
Then I made backup in TWRP in case something goes wrong. I was going to try AOKP v40 so I downloaded it via goo manager and then I flashed it in TWRP Install option (and also installed gapps) and wiped cache. Device rebooted and I was stuck at AOKP boot animation for about 15 minutes when I decided to recover back. So I rebooted, restored and rebooted.
Now I'm stuck at first boot logo (eee pad). When I try to do VolDown+Power to get into recovery it doesn't ask for VolUp, but goes straight to selection of Wipe or USB. When I select fastboot or wait 10 secs device frozes. (I haven't tried wipe, just in case it would be needed to unbrick).
I read thread about unbricking (http://forum.xda-developers.com/showthread.php?t=1514088) and to me it seems like option 3, but I don't see recovery option.
In device manager I have 'ASUS Fastboot Interface'.
Here's video how it looks like: http://www.youtube.com/watch?v=7BGd1PIVbn8
Please please could anyone help me?
Btw: Is there any chance to shut down? Holding power button just resets, so does pinhole... :/

qery said:
Hello,
about 2 hours ago I decided that I would unlock my device (before that I read maximum informations that I could). Unlocking went fine and I also installed TWRP 2.1.3 (through ViperMod). So far so good.
Then I made backup in TWRP in case something goes wrong. I was going to try AOKP v40 so I downloaded it via goo manager and then I flashed it in TWRP Install option (and also installed gapps) and wiped cache. Device rebooted and I was stuck at AOKP boot animation for about 15 minutes when I decided to recover back. So I rebooted, restored and rebooted.
Now I'm stuck at first boot logo (eee pad). When I try to do VolUp+Power to get into recovery it doesn't ask for VolUp, but goes straight to selection of Wipe or USB. When I select fastboot or wait 10 secs device frozes. (I haven't tried wipe, just in case it would be needed to unbrick).
I read thread about unbricking (http://forum.xda-developers.com/showthread.php?t=1514088) and to me it seems like option 3, but I don't see recovery option.
In device manager I have 'ASUS Fastboot Interface'.
Here's video how it looks like: http://www.youtube.com/watch?v=7BGd1PIVbn8
Please please could anyone help me?
Btw: Is there any chance to shut down? Holding power button just resets, so does pinhole... :/
Click to expand...
Click to collapse
Shouldn't it be volume and power down to get to the option to press volume up for recovery?
Are you familiar with fastboot flashing recoveries? Either way that will be helpful info for us to have.
Most important thing, this is no big deal at all, it's really a minor issue. Don't let yourself get stressed out over it, the community will make sure you're good to go.

CharliesTheMan said:
Shouldn't it be volume and power down to get to the option to press volume up for recovery?
Click to expand...
Click to collapse
Yes sure my bad, it was typo (I was kinda sleepy and tired when I was writing)
CharliesTheMan said:
Are you familiar with fastboot flashing recoveries? Either way that will be helpful info for us to have.
Click to expand...
Click to collapse
Nope, this is my first time flashing.

You say you dont see the VOL_UP message. From the video it looks like it is there. You just did not press it within 5 seconds.
Once it comes up, let go of the buttons ;p

leppie said:
You say you dont see the VOL_UP message. From the video it looks like it is there. You just did not press it within 5 seconds.
Once it comes up, let go of the buttons ;p
Click to expand...
Click to collapse
nope it's not there. I was holding voldown from the start and as soon as it should say 'press volup for recovery' (time 0:04) it jumps (skips 5 seconds of waiting) directly to wipe/fastboot options (wipe is one that is selected on video)

Ok so I managed to fix my problem thanks to hanzo001's thread (http://forum.xda-developers.com/showthread.php?t=1662158). Someone should add this instructions to the [HOW-TO] Unbrick your Transformer Prime (or not) thread.

qery said:
Ok so I managed to fix my problem thanks to hanzo001's thread (http://forum.xda-developers.com/showthread.php?t=1662158). Someone should add this instructions to the [HOW-TO] Unbrick your Transformer Prime (or not) thread.
Click to expand...
Click to collapse
glad it's fixed, im sure hanzo001 will appriciate a simple thanks on his thread too..and let others know it worked for you

Bootloop to recovery issue.

Hi guys.
I seriously need help right now.
My friend bought an s2 i9100 in cheep which was stuck on bootloop and he thought it could be repaired.
so we don't know what caused the problem.
But i was surprised that few repair shops weren't able to fix it.
let me explain the problem:-
when we hold power button or plug in a charger it show the logo, goes into recovery and reboots repeating it in loop.
so whenever i charge it goes into this loop.
we can use volume up & down key in those 2-3 seconds in recovery but not the power key.
we can access download mode and it doesn't reboots automatically but going into recovery mode manually also start this loop.
it's like we are only going in recovery mode again & again.
i installed this file "I9100XWLPW_I9100ODDLPC_I9100DDLPB_HOME.tar.md5" through odin and also used the pit file "I9100_STOCK-System_2GB-Data_512MB-Preload.pit" but nothing changed.
i don't know what to do now.
i cant find any gingerbread rom to test.
i don't know how it can be fixed,
so please help me.

Update
After doing a lot of things I finally managed to boot into system but the problem is not solved.
I flashed i9100XXLSJ which had modem and CSC files other than the PDA only.
The device actually booted in system (just the samsung logo) but it was a bootloop.
This time I kept holding power button by which the bootloop stopped and it successfuly booted but power button is not working inside the system so I can't reboot, power off or even switch on the screen.
By holding down up vol + home + power for a considerable long time I can boot into recovery. But again the power button is not working so I can't select any option.
I flashed a cwm touch recovery which is working.
So can anyone tell me what is the problem here and what can I do to actually fix it.

If you have problems with flashing stock ROM, consider flashing a custom ROM, like Cyanogenmod.

BenjyTec said:
If you have problems with flashing stock ROM, consider flashing a custom ROM, like Cyanogenmod.
Click to expand...
Click to collapse
The problem is not about flashing it's about the bootloop & tell me can I flash cyanogenmod with Odin?

@kuro2052
Try flashing the 4.1.2 JellyBean leak ROM via ODIN linked in this thread (scroll down to you see "Another option for i9100"):
[GUIDE][Troubleshoot a failed Odin flash]
This will factory reset the device which may hopefully resolve your problems.
gsstudios

gsstudios said:
@kuro2052
Try flashing the 4.1.2 JellyBean leak ROM via ODIN linked in this thread (scroll down to you see "Another option for i9100"):
[GUIDE][Troubleshoot a failed Odin flash]
This will factory reset the device which may hopefully resolve your problems.
gsstudios
Click to expand...
Click to collapse
Actually the ROM you are talking about is the ROM which I flashed which is mentioned in my second post " update".
PDA = CODE_I9100XXLSJ.tar
PHONE = MODEM_I9100XXLS6.tar
CSC = CSC_HOME_OXX_I9100OXXLS1.tar.
That's how I got this far, previously it was impossible to boot into system.

kuro2052 said:
After doing a lot of things I finally managed to boot into system but the problem is not solved.
I flashed i9100XXLSJ which had modem and CSC files other than the PDA only.
The device actually booted in system (just the samsung logo) but it was a bootloop.
This time I kept holding power button by which the bootloop stopped and it successfuly booted but power button is not working inside the system so I can't reboot, power off or even switch on the screen.
By holding down up vol + home + power for a considerable long time I can boot into recovery. But again the power button is not working so I can't select any option.
I flashed a cwm touch recovery which is working.
So can anyone tell me what is the problem here and what can I do to actually fix it.
Click to expand...
Click to collapse
In CWM touch recovery, you can swipe (or touch) to confirm the option.
Try factory reset. Reboot.
If that doesn't help, try wiping system, cache and data.
Let me know how that goes
gsstudios

gsstudios said:
In CWM touch recovery, you can swipe (or touch) to confirm the option.
Try factory reset. Reboot.
If that doesn't help, try wiping system, cache and data.
Let me know how that goes
gsstudios
Click to expand...
Click to collapse
Wiping data/factory reset and cache doesn't solve the problem.
There is format option in 'mounts and storage' so I formated system, data, cache & also emmc. But the bootloop is not gone. The only thing that is gone is the ROM because of those formats. I have yet to to install the ROM again.

maybe is a faulty power button... Do u have to push it down a little harder than normal?

affigne said:
maybe is a faulty power button... Do u have to push it down a little harder than normal?
Click to expand...
Click to collapse
It might be the problem of power button. Sometimes it boots as soon as I put the battery. It always boot when I plug in charger. Sometimes it boots after I press and hold the power key for maybe 15 second & sometimes it doesn't boot when holding power key & I have leave hold again to boot it. And important thing is when it boots, I have to hold the power key until the key lights up to stop it from bootloop but then the power is Jo longer functional in system. Same goes for recovery. But this is the only till nowROM which actually boots into system. Other ROMs were booting into recovery automatically.
I wanted to test cyanogenmod but I am not able to install twrp. I followed the steps here using HeimdallSuite https://twrp.me/devices/samsunggalaxys2i9100.html
I had no problem in the steps but the recovery is not actually replaced when I boot into it.
The recovery that I have currently is not able to flash isorec_twrp or any cyanogenmod directly. It always shows error code 7.
I am going to replace the power button with my friend's s2 (other friend who have an s2 laying around) only to see it works.
Anyways tell me how to install twrp successfuly.

The actual power button needs to soldered, I thought It would be a connector, so I am not going to do that. But as far as I can tell, the plastic button isn't the problem.

kuro2052 said:
It might be the problem of power button. Sometimes it boots as soon as I put the battery. It always boot when I plug in charger. Sometimes it boots after I press and hold the power key for maybe 15 second & sometimes it doesn't boot when holding power key & I have leave hold again to boot it. And important thing is when it boots, I have to hold the power key until the key lights up to stop it from bootloop but then the power is Jo longer functional in system. Same goes for recovery. But this is the only till nowROM which actually boots into system. Other ROMs were booting into recovery automatically.
I wanted to test cyanogenmod but I am not able to install twrp. I followed the steps here using HeimdallSuite https://twrp.me/devices/samsunggalaxys2i9100.html
I had no problem in the steps but the recovery is not actually replaced when I boot into it.
The recovery that I have currently is not able to flash isorec_twrp or any cyanogenmod directly. It always shows error code 7.
I am going to replace the power button with my friend's s2 (other friend who have an s2 laying around) only to see it works.
Anyways tell me how to install twrp successfuly.
Click to expand...
Click to collapse
Since I was on leaked JB firmware, what I did was to install philz recovery via android stock recovery, then install latest dorimanx isorec recovery/kernel, then install TWRP...
---------- Post added at 01:10 AM ---------- Previous post was at 01:09 AM ----------
kuro2052 said:
The actual power button needs to soldered, I thought It would be a connector, so I am not going to do that. But as far as I can tell, the plastic button isn't the problem.
Click to expand...
Click to collapse
check the battery contacts...

Help with S6 Edge please!? I'm going insane!

Hi guys, I've owned an S6 Edge in the past.
Due to my fondness, I purchased another one last week (Arrived today).
Damn, it's in mint condition! I purchased it knowing it wouldn't boot.
The guy had a picture of download mode stating it needed firmware/rom.
Not a problem I thought! I went through all this with my past S6 Edge.
I got the phone, got it out the box, thought hmmm... Won't boot, must be dead!
Plugged it in (First issue) I didn't get a charge screen, but a S6 Edge Powered by Android (bootloader screen)
Anyhow, I've flashed the latest stock firmware, continues to bootloader screen and sticks.
I've flashed TWRP and I can enter TWRP, flashed multiple custom roms, still stuck at the bootloader screen.
Flashed the stock firmware with re-partition and a PIT file, still stuck at the bootloader screen.
Any help? Is this phone done for or am I missing something?
This would have been my daily driver after smashing my S9, needed a non contract phone. I LOVED my old S6.
It is a G925F, not sure what firmware it had previously, haven't had a single successful boot.

Try to install Android 5 firmware on it.. And when it's booting up (SAMSUNG LOGO) Click Power+Volume down button.. When it's powered off.. Quickly, Click Power+Home button+Volume up and you will be booted to Recovery Mode.. Click wipe data, cache then reboot system.. Wait till the phone boots completely.. Then, you can flash twrp and custom roms... Tell me if it worked..

Roowz said:
Try to install Android 5 firmware on it.. And when it's booting up (SAMSUNG LOGO) Click Power+Volume down button.. When it's powered off.. Quickly, Click Power+Home button+Volume up and you will be booted to Recovery Mode.. Click wipe data, cache then reboot system.. Wait till the phone boots completely.. Then, you can flash twrp and custom roms... Tell me if it worked..
Click to expand...
Click to collapse
Hi mate, I've tried installing (and successfully) Android 7.0. It stays on the 'powered by android' galaxy screen.
I can get into TWRP and install custom roms successfully, just stays on the said screen again.
Also, might be worth noting, when I plugged the phone in to charge it just goes to the same screen mentioned.
If I hold Power and Vol Down while plugged in it will go to the battery and the thunderbolt, just no animation.
Also LEDs not working.

Just do it...Dont plug your phone when ur doing power+volume down thingy..Android 5 firmwares are a little bit different than marshmallow and nougats..So just flash it and you will see the profit

Roowz said:
Just do it...Dont plug your phone when ur doing power+volume down thingy..Android 5 firmwares are a little bit different than marshmallow and nougats..So just flash it and you will see the profit
Click to expand...
Click to collapse
Alright I'll give it a bash!
I could only find 5.0.2 snd 5.11 software, so I'm downloading 5.0.2.
I'll let you know how it pans out, thanks for the replies.

Roowz said:
Just do it...Dont plug your phone when ur doing power+volume down thingy..Android 5 firmwares are a little bit different than marshmallow and nougats..So just flash it and you will see the profit
Click to expand...
Click to collapse
Also, won't I get a bootloader error while trying to flash because it is a lower version?

If you try the Odin3 flash tool?

Gromit94 said:
Also, won't I get a bootloader error while trying to flash because it is a lower version?
Click to expand...
Click to collapse
How long are you leaving it on the bootloader screen after flashing stock? First boot can take 15-30 minutes sometimes

hey just do the following...
Hi...if your problem is still active - not solved! Here a little Note for you that maybe help you to get s6 edge running again.
First you need to start Odin 3.12.03 with Admin rights!!!
Then you could use the Firmware from my Google Drive if you want. Its the German Variant with CSC-DBT
https://drive.google.com/file/d/1pDybynK6_Huu-vjM_azIjgz30IIhlEAP/view?usp=sharing
If you want to use SamFirm by your own. Keep attention that you check the "Binary Nature" !!!!!!!!!!!!!!!!!!!!!!!!!!
If not...its just 1,9 Gb and dont work
If yes...its over 2,3 Gb and work fine
shutdown phone with Vol- and Power (keep holding both)
then start into downl mode with Vol- and Home and Power (keep holding all together)
connect phone to usb
after flashing rom the first start could take up to 10-15 mins...not more on stock firmware
if the first start is done and your in the screen where to type your sim pin
power off the phone and unplug usb
start into download mode again
reset Odin and select the twrp.zip into ap
plug usb again
flash twrp with odin
phone restart automatically...just wait the minute
then shutdown and start into twrp recovery with Vol+ Home and Power (keep holding all together)
so good luck man

Tab S6 stuck in bootloop, can't get to recovery mode

My Tab S6 tried to auto-install an update yesterday (it is rarely connected to Wifi/internet). It then rebooted. Since then, it's been stuck in a boot loop.
It will display the "Samsung Galaxy Tab S6 | Secured By Knox" logo screen for a few seconds, then switch to the blue "Installing System Update" screen (with the android logo). Installing System Update gets to 28% and stops. Then the rotating icon on the android freezes. Then the device reboots and starts all over again.
Edit: the tablet is 100% stock. It's not been rooted or had any custom ROMs loaded.
I have tried getting to recovery mode, by holding power+volup while it boots. This doesn't seem to change the behavior at all. Any advice is much appreciated.

Fedge7 said:
My Tab S6 tried to auto-install an update yesterday (it is rarely connected to Wifi/internet). It then rebooted. Since then, it's been stuck in a boot loop.
It will display the "Samsung Galaxy Tab S6 | Secured By Knox" logo screen for a few seconds, then switch to the blue "Installing System Update" screen (with the android logo). Installing System Update gets to 28% and stops. Then the rotating icon on the android freezes. Then the device reboots and starts all over again.
Edit: the tablet is 100% stock. It's not been rooted or had any custom ROMs loaded.
I have tried getting to recovery mode, by holding power+volup while it boots. This doesn't seem to change the behavior at all. Any advice is much appreciated.
Click to expand...
Click to collapse
can you shut it down? try volume down and power button ? if it don't shut down, do this soon as it reboots, hold volume up and down and plug in usb cable to desktop/laptop usb port! it will boot into download mode!

N1NJATH3ORY said:
can you shut it down? try volume down and power button ? if it don't shut down, do this soon as it reboots, hold volume up and down and plug in usb cable to desktop/laptop usb port! it will boot into download mode!
Click to expand...
Click to collapse
I can't actually shut it down. If I start holding power+voldown right after it boots, the tablet does reboot before getting stuck at 28%. But it reboots--it doesn't power off.
I tried download mode and that actually seemed to work! Specifically, I left the tablet overnight in the reboot loop until the battery drained. Just now, I held down volup+voldown and plugged it into my laptop. I got the green "Warning/Custom OS" screen and then pressed volup to continue. The tablet rebooted pretty quickly after that (I'm guessing due to low battery) so I didn't get a good look at the download mode options.
Once I'm in download mode, can I factory reset the tablet? I don't need to preserve any data/apps/settings.

Fedge7 said:
I can't actually shut it down. If I start holding power+voldown right after it boots, the tablet does reboot before getting stuck at 28%. But it reboots--it doesn't power off.
I tried download mode and that actually seemed to work! Specifically, I left the tablet overnight in the reboot loop until the battery drained. Just now, I held down volup+voldown and plugged it into my laptop. I got the green "Warning/Custom OS" screen and then pressed volup to continue. The tablet rebooted pretty quickly after that (I'm guessing due to low battery) so I didn't get a good look at the download mode options.
Once I'm in download mode, can I factory reset the tablet? I don't need to preserve any data/apps/settings.
Click to expand...
Click to collapse
You cannot reset the tablet from Download mode afaik- You need to enter Recovery Mode to do that.
You can however, flash stock from Download mode using Odin (3.13.3 is best). If you're not confident with doing that, your best option is Factory Reset in Recovery Mode. Hold Volume Up and Power when the Tablet is booting, let go when you see the Samsung logo. The timing can be tricky, but you should be able to do it. Also, you can force a reboot with Volume Down and Power.
Alternatively, if factory reset doesn't work, since you're completely stock, you will still be covered under warrenty.

bartleby999 said:
your best option is Factory Reset in Recovery Mode. Hold Volume Up and Power when the Tablet is booting, let go when you see the Samsung logo.
Click to expand...
Click to collapse
Thanks for the suggestion. I have tried this many many times. I've tried letting go of the buttons at different times. I've tried holding volup while letting go of power. I've tried this a ton of different ways, and no matter what, the tablet always shows the "Installing system update" screen. Some googling has led me to believe that sometimes, when performing a factory reset, the "Installing system update" screen shows up right before the normal recovery screen. Is it possible that the tablet is trying to get to recovery mode, but can't get past this first step?

Fedge7 said:
Is it possible that the tablet is trying to get to recovery mode, but can't get past this first step?
Click to expand...
Click to collapse
Honestly, I don't know - I'm not an expert but I guess it's possible that the update failed and corrupted both System and Recovery.
You'll be covered under warrenty, so maybe just return the Tablet from where you purchased or direct to Samsung, could take a while given the current situation though I guess. If you have a PC, then I think the best option would be to just flash stock yourself, since that's probably all Samsung will do. Even if that doesn't work you'd still be covered under warrenty, as far as I'm aware attempting to flash stock doesn't trip Knox.

Here is solution to unbrick your device!!!
Fedge7 said:
My Tab S6 tried to auto-install an update yesterday (it is rarely connected to Wifi/internet). It then rebooted. Since then, it's been stuck in a boot loop.
...
Edit: the tablet is 100% stock. It's not been rooted or had any custom ROMs loaded.
I have tried getting to recovery mode, by holding power+volup while it boots. This doesn't seem to change the behavior at all. Any advice is much appreciated.
Click to expand...
Click to collapse
Despair not...I have just come from resolving this exact situation not 30 minutes ago. I'd been trying to flash (using Odin as I decided to stay on Stock and not root this device, for a change) the latest OneUI2.1 releases for my device (SM-T865 - LTE version) and boom in the middle of the Odin update, the flash just failed...I then couldn't reboot and get into neither Recovery, nor Download Mode because it appears my bootloader and recovery both got corrupted.
Here's what you need....
1. Odin app for PC (am on Windows)
2. Your device's Stock firmware (sammobile firmware archive)
3. You will need someone to help you boot the device directly into Download mode (and this is the tricky part because for most of us we are used to get into Bootloader by using the key combination (from Powered Off device) Vol+ and Power On at the same time to get into stock recovery and then scrolling down to option 2 in this menu, "Reboot to Bootloader". Well now you are going to boot directly into Bootloader mode. Here's how you do it...
4. Get your friend to line up the USB-C cable into the port of the device, but DO NOT press it in...yet
5. Press Power off and Vol- buttons at the same time to turn off the device
6. And now you have to to be super fast: if device starts to turn on on its own, YOU press and hold Vol+ and Vol- both at the same time while YOUR FRIEND pushes the USB cable fully into the port - you should now have booted directly into Download mode. (if not repeat this, and remember to be super fast and sync with your friend pushing in the USB cable)...
7. When you get into Download mode, then you are home and dry...
8. Select ONLY the Bootloader file (BL...XX...) in Odin, make sure only "reset time" and "reboot" are ticked, and flash
9. When device reboots, press Vol+ and Power combo to get back into Bootloader mode again...but I think device will reboot into Download mode on its own
10. Now select all the files from your Stock file into the various tabs (BL, CP, CSC, AP...) do not select HOME_CSC as we want to flush this device clean...
11. Flash, and voila...success - you will have lost all your data but rather that than losing the device...
12. Feedback here and let us know if this works? For reference for others in the future...

FYI, I got in this situation, and the previous post did work for me, just takes good timing! Thanks!!!!

Same issue today for me. My tablet showed different screen with green and red text, it allowed me to delete app data, then booted into safe mode, then i had to do factory reset and now i am screwed, as it is refusing to restore any apps and their settings. I will try to flash it back to Android 9, maybe then it will do the restore. I forgot to do any manual backup to SD or so.
Edit: the device upgraded to 10, but reset itself after about 10 minutes of use.
Edit2: i found what caused it. It is caused by Nova Launcher, if i try to set wallpaper.

Just found a news article that there is a RGB/sRGB problem with wallpapers. It might be the problem i had.
I am adding a screenshot of the result.

Yeah, I had that kind of reboot loop from a wallpaper that I downloaded

I can get into download mode. But it kicks me out within a few seconds. Any help please

I have the same problem with a Tab S6 Lite, it is in bootloop and does not let me enter the recovery mode, I can go into download mode and I flashed the latest original firmware Android11, Android10 etc., . I tried them all but always goes in bootloop, and also the bootloop occurs only if I connect the usb cable to the PC, without any sign of life. Do I still have hopes or have I compromised the motherboard?
The reason for all this is because I had followed a guide to give root permissions with magisk, I did everything right, only that the guide was with Android10, while I had Android11 and I was deceived by the fact that in the title of the guide there was written "guide 2021"
, so I did not check the compatibility of operating systems, I was a fool, I know, I hope so much that I did nothing irretrievable, it's my son's tablet!

Genpis said:
I have the same problem with a Tab S6 Lite, it is in bootloop and does not let me enter the recovery mode, I can go into download mode and I flashed the latest original firmware Android11, Android10 etc., . I tried them all but always goes in bootloop, and also the bootloop occurs only if I connect the usb cable to the PC, without any sign of life. Do I still have hopes or have I compromised the motherboard?
The reason for all this is because I had followed a guide to give root permissions with magisk, I did everything right, only that the guide was with Android10, while I had Android11 and I was deceived by the fact that in the title of the guide there was written "guide 2021"
, so I did not check the compatibility of operating systems, I was a fool, I know, I hope so much that I did nothing irretrievable, it's my son's tablet!
Click to expand...
Click to collapse
Did you use HOME CSC or the non HOME CSC when flashing?

Genpis said:
I have the same problem with a Tab S6 Lite, it is in bootloop and does not let me enter the recovery mode, I can go into download mode and I flashed the latest original firmware Android11, Android10 etc., . I tried them all but always goes in bootloop, and also the bootloop occurs only if I connect the usb cable to the PC, without any sign of life. Do I still have hopes or have I compromised the motherboard?
The reason for all this is because I had followed a guide to give root permissions with magisk, I did everything right, only that the guide was with Android10, while I had Android11 and I was deceived by the fact that in the title of the guide there was written "guide 2021"
, so I did not check the compatibility of operating systems, I was a fool, I know, I hope so much that I did nothing irretrievable, it's my son's tablet!
Click to expand...
Click to collapse
Try to install a castom rooted rom which has pre installed also Twrp.
[MAGISK Rom / Firmware base convertor) 420rom-T860/5 - V13.3- CUE1 - ANDROID 10 - OneUI 3.1 - Sec Patch 05/2021 - Released 06/07/2021
WELCOME TO 420 ROM - MAGISK ROM FOR SAMSUNG GALAXY TAB S6 WiFi/4G (T860/5)! 420rom Telegram-Group: Please bear in mind that things will be added as and when my learning and time permits (being a dad with a family and having ADHD myself means...
forum.xda-developers.com
Download the android 11 last rooted rom from there. You install it with odin as as a normal original rom.
Disable in odin auto reboot. After rom install, restart manually and press the correct buttons immediately to boot in Twrp and not to system. Format (not wipe) data from there and reboot to system. If you are lucky it will work..
(I hope you unlocked bootloader before try to root. If you haven't unlocked bootloader this won't work also).

Moe5508 said:
Here is solution to unbrick your device!!!
Despair not...I have just come from resolving this exact situation not 30 minutes ago. I'd been trying to flash (using Odin as I decided to stay on Stock and not root this device, for a change) the latest OneUI2.1 releases for my device (SM-T865 - LTE version) and boom in the middle of the Odin update, the flash just failed...I then couldn't reboot and get into neither Recovery, nor Download Mode because it appears my bootloader and recovery both got corrupted.
Here's what you need....
1. Odin app for PC (am on Windows)
2. Your device's Stock firmware (sammobile firmware archive)
3. You will need someone to help you boot the device directly into Download mode (and this is the tricky part because for most of us we are used to get into Bootloader by using the key combination (from Powered Off device) Vol+ and Power On at the same time to get into stock recovery and then scrolling down to option 2 in this menu, "Reboot to Bootloader". Well now you are going to boot directly into Bootloader mode. Here's how you do it...
4. Get your friend to line up the USB-C cable into the port of the device, but DO NOT press it in...yet
5. Press Power off and Vol- buttons at the same time to turn off the device
6. And now you have to to be super fast: if device starts to turn on on its own, YOU press and hold Vol+ and Vol- both at the same time while YOUR FRIEND pushes the USB cable fully into the port - you should now have booted directly into Download mode. (if not repeat this, and remember to be super fast and sync with your friend pushing in the USB cable)...
7. When you get into Download mode, then you are home and dry...
8. Select ONLY the Bootloader file (BL...XX...) in Odin, make sure only "reset time" and "reboot" are ticked, and flash
9. When device reboots, press Vol+ and Power combo to get back into Bootloader mode again...but I think device will reboot into Download mode on its own
10. Now select all the files from your Stock file into the various tabs (BL, CP, CSC, AP...) do not select HOME_CSC as we want to flush this device clean...
11. Flash, and voila...success - you will have lost all your data but rather that than losing the device...
12. Feedback here and let us know if this works? For reference for others in the future...
Click to expand...
Click to collapse
Why flashing only the bootloader first? At the moment I'm trying to recover my s20 fe from a bootloop without losing my data
sosimple said:
Try to install a castom rooted rom which has pre installed also Twrp.
[MAGISK Rom / Firmware base convertor) 420rom-T860/5 - V13.3- CUE1 - ANDROID 10 - OneUI 3.1 - Sec Patch 05/2021 - Released 06/07/2021
WELCOME TO 420 ROM - MAGISK ROM FOR SAMSUNG GALAXY TAB S6 WiFi/4G (T860/5)! 420rom Telegram-Group: Please bear in mind that things will be added as and when my learning and time permits (being a dad with a family and having ADHD myself means...
forum.xda-developers.com
Download the android 11 last rooted rom from there. You install it with odin as as a normal original rom.
Disable in odin auto reboot. After rom install, restart manually and press the correct buttons immediately to boot in Twrp and not to system. Format (not wipe) data from there and reboot to system. If you are lucky it will work..
(I hope you unlocked bootloader before try to root. If you haven't unlocked bootloader this won't work also).
Click to expand...
Click to collapse
Any tips in recovering my stock s20 fe from a bootloop without losing data? already tried Odin but without success the first try
jointer said:
Same issue today for me. My tablet showed different screen with green and red text, it allowed me to delete app data, then booted into safe mode, then i had to do factory reset and now i am screwed, as it is refusing to restore any apps and their settings. I will try to flash it back to Android 9, maybe then it will do the restore. I forgot to do any manual backup to SD or so.
Edit: the device upgraded to 10, but reset itself after about 10 minutes of use.
Edit2: i found what caused it. It is caused by Nova Launcher, if i try to set wallpaper.
Click to expand...
Click to collapse
did you managed to not lose your data?

jrdef said:
Any tips in recovering my stock s20 fe from a bootloop without losing data? already tried Odin but without success the first try
Click to expand...
Click to collapse
Wiping cache partition in Recovery and reflashing the firmware are basically your only 2 options

jrdef said:
Any tips in recovering my stock s20 fe from a bootloop without losing data? already tried Odin but without success the first try
Click to expand...
Click to collapse
Flash in odin the same rom you had. There are 2 csc files in rom, which you use 1 in odin one. Try use the "home csc". Home csc keep KEEPS your data. If you're lucky it may work. (It would work in keeping your data 100% if your rom was ok. Because it isn't you have some changes to work.).
You must try with same rom or newer.
CSC – If you flash the CSC file, it’ll perform a factory reset of your Galaxy device and wipe all data while installing a new firmware to bring your device to the same state as it was when you purchased it. Go with CSC if you want a clean installation.
HOME_CSC – On the other hand, if you want to keep your Samsung phone’s data and settings even flashing the stock firmware, you can select the HOME_CSC file.

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