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I rooted the tablet and it updated fine. I then reboot it and it is now stuck in boot loop. It says bootloader version unknown when I press power and volume button. What do I do?
Update. I have been able to successfully make my tab bootloop three times and three times have brought it back to life. All three times it has been because of an app that I guess is not compatible with 3.1. Because of my low thread post count I can't provide links or post into the development forum but my method has worked all 3 times.
A little background. First time I hadn't changed recovery and it was a bit easier. Second and third times I had cwm recovery and it was harder because adb wasn't recognizing my tablet.
First you need to have adb installed into your computer. I installed the sdk and then added the adb option. I then went into this post in the development forum: Re: [Solution] HC 3.1 OTA Difficulties 13% + Stock ODIN. In that post you'll find the Odin application for your computer and the appropriate PDA file for your tab. The PDA file contains the stock recovery, bootloader, and rom.
Whether you have stock recovery or cwm the next instructions are the same.
1. Connect the tab to computer.
2. Holding power button and volume down button, get into screen where you can choose fastboot or download mode. Choose download mode.
3. Once in download mode, on your computer open the Odin application.
4. Where it says PDA file, click the browse option to look for the PDA file you downloaded. Open it and it will be listed in the PDA section. Also the box next to PDA will be checked. Don't change any other settings.
5. Now you can press the button to run Odin. Don't touch tablet until it's done.
6. Now you can try rebooting it but it will still bootloop. Difference now is that you can adb into it.
7. With tab connected, go into cmd mode on your computer and type: adb reboot recovery
8. The tablet should reboot into stock recovery. From there wipe data and cache.
9. Reboot tablet and it should work! The tablet will be reverted back to 3.0.1. Just run the update again and enjoy.
Couple of notes. I tried the fastboot method mentioned in some posts but it never worked for me. This method that I've done has been flawless for me. I do have I/O version so I'm not sure if it is different from retail version. I think bootloops occur because some apps are not ready, stable, or compatible with 3.1. Something in the bootloader and recovery has changed in 3.1, whether it is changed via the apps or the update itself I'm not sure. I do know that the problem apps work great in 3.0.1, never causing bootloops, thus my conclusions.
Same thing happened to me. Fastboot -w did the trick. It wipes the tablet though.
Thanks. It's weird. My tablet was rooted but I hadn't changed anything. I ended up connecting it to my pc, adb'd into recovery. I wiped cache and data and it eventually worked. Only thing was that it went back to 3.0.1. I then did the update again and now it's working flawlessly with 3.1
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Help needed Samsung galaxy tab 10.1 stuck in boot loop
Hi,
I faced a similar situation, I upgraded by Samsung Galaxy Tab 10.1 to HC 3.1 and it had been working fine .
Unfortunately I did not use it for the past 2 days, the battery drained out and after that I tried to recharge and start itup.
It goes in a boot loop .
And also display's Entering upload mode, cause undefined .
Is fastboot the only way to recover the system now .
saviressej said:
Thanks. It's weird. My tablet was rooted but I hadn't changed anything. I ended up connecting it to my pc, adb'd into recovery. I wiped cache and data and it eventually worked. Only thing was that it went back to 3.0.1. I then did the update again and now it's working flawlessly with 3.1
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Click to expand...
Click to collapse
How did you ADB it while it was in a bootloop?..
I'm stuck with this same issue! Everything was fine, I was on version 3.1 and I had rebooted it several times. Then one time it just got stuck on a bootloop and I can't figure out how to fix it. This is the google i/o version and I haven't done anything to it other than update to version 3.1.
I've been googling for an hour or so, but I have no idea what i'm suppose to be looking for. =\
you can recover.
i have posted detailed instructions in the OTA thread on xda.
sramasub said:
Hi,
I faced a similar situation, I upgraded by Samsung Galaxy Tab 10.1 to HC 3.1 and it had been working fine .
Unfortunately I did not use it for the past 2 days, the battery drained out and after that I tried to recharge and start itup.
It goes in a boot loop .
And also display's Entering upload mode, cause undefined .
Is fastboot the only way to recover the system now .
Click to expand...
Click to collapse
+1, i have the same problem. drained battery, recharged, stuck in boot loop. also got the "entering upload mode; cause undefined" message too.
I experienced the "upload mode / boot loop" problem a couple days ago and wrestled with it for hours. I finally found a combination of things to do that would allow me to enter fastboot to fix the issue, see the following post:
http://forum.xda-developers.com/showpost.php?p=14832831&postcount=122
Some of the steps may not be required, but what I listed should get you into the bootloader without issue. Once inside, simply do a "fastboot -w" to fix the bootloop. Interestingly, after doing a fastboot wipe I am now able to enter the bootloader without all of the complicated gymnastics listed in my post above. It doesn't quite make sense to me, but it's certainly the case.
_avatar said:
I experienced the "upload mode / boot loop" problem a couple days ago and wrestled with it for hours. I finally found a combination of things to do that would allow me to enter fastboot to fix the issue, see the following post:
http://forum.xda-developers.com/showpost.php?p=14832831&postcount=122
Some of the steps may not be required, but what I listed should get you into the bootloader without issue. Once inside, simply do a "fastboot -w" to fix the bootloop. Interestingly, after doing a fastboot wipe I am now able to enter the bootloader without all of the complicated gymnastics listed in my post above. It doesn't quite make sense to me, but it's certainly the case.
Click to expand...
Click to collapse
Yeah, I found your post a couple days ago, but couldn't get it to work. Once plugged into the wall charger, I couldn't get the charging icon to show up. I've tapped the power button, held it down for half a second, a full second, several seconds... it either does nothing, or tries to boot up.
I was able to get into Odin3 download mode and flash a ROM (see this thread: http://forum.xda-developers.com/showthread.php?t=1130216#2), but now my USB doesn't work and adb won't recognize it, so as a development device it's not very useful to me. I can't seem to get into the bootloader so I can't flash with adb or fastboot (when I boot into USB mode, adb doesn't recognize the device). I need to figure out how to flash an original I/O image, but can't seem to figure it out...
I've also had some difficulty getting to the "charging" screen, the trick is to be patient. Make sure the device is really off, plug it in, and walk away for a good while -- like 5 minutes.
When you say you're able to get it into USB mode what does that mean? Sounds like you are actually able to get it into fastboot mode. What operating system are you running? On my Mac the fastboot binaries I found floating around the net didn't work, I had to compile one from source. If you're able to get into fastboot mode but it's not detecting your device, and you have a Mac, I can send you the version I compiled from AOSP and you can try that. Let me know...
Try this...
http://forum.xda-developers.com/showthread.php?p=14791689#post14791689
Works for this guys.
I have a solution for the bootloop in my first post.
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I had a similar problem. Looks like Clockwork recovery can sometimes trash your /data partition and its format/wipe option won't fix it. I recovered by booting into stock recovery and formatting /data from there. Be forewarned that you'll lose your "sdcard," which really lives on /data.
Nice guide, thanks!
Good evening everyone,
I will start off by saying that I really didn't do things by the book this time around. I have run out of ideas even as to what to Google to find similar cases to mine.
I wanted to flash Cyanogenmod onto my G2. Since I already had CWM installed, I loaded the ROM and Gapps. After wiping the phone, I went to flash from the zip. The flash failed. I tried again, and it happened again. I wiped the cache and dalvik again, and tried again. Still no flash.
At this point I go for the reboot only to realize that my phone is now stuck in a bootloop that is contantly landing me back into recovery.
I believe I really screwed up from here as I read about a way to exit the cwm bootloop by flashing a new "exitrecovery.zip" file. Since ADP wouldn't push the file for some reason, I used that function where the phone waits the file to be pushed and flashes it. That succeeded.
The phone switched off (after hanging on CWM for a bit) and now won't do anything at all. No boot logo, nothing. Can't get into CWM anymore either.
The computer brings up a bunch off drives which it wants me to format when I plug the phone in. Only one of them has a folder called "image" on it.
The display switches on, but won't do anything there.
Holding power+up reboots it after a few seconds and so does power=down.
I am thinking of just seeing if I can get it assessed by my carrier, hoping they'll have the tools to just reflash it... somehow. Else, is there a way to potentially fix this?
Back to stock
Put the phone in download mode (vol up while plugging in USB) and use the LG Flash Tool to return to stock. Instructions are posted in General section.
Rule number 1.
ALWAYS MAKE A BACKUP.
bodom_hc said:
Rule number 1.
ALWAYS MAKE A BACKUP.
Click to expand...
Click to collapse
I have a backup I made with CWM.
If that helps, please point me into the right direction to restore it. I fail to see how I can do that without even being able to start cwm up.
missiveusa said:
Put the phone in download mode (vol up while plugging in USB) and use the LG Flash Tool to return to stock. Instructions are posted in General section.
Click to expand...
Click to collapse
I will try this, but the screen never shows anything at all
hello,
i recently flashed a chinese A8 (a8000),it gave a headache following a PIT file issue but it nevertheless completed...assuming it had a battery...i unplugged it while the android robot was cleaning up...it switched off immediately, i tried to boot it, it did... i went to recovery and reset it, then it only goes to charging... so i figured i might have messed it up...so i went to download mode and as it started to flash...it rebooted...Odin gave write error and the phone rebooted to a 'error has occurred...' BSOD. the problem now is, it stays on for 10 seconds and reboots again to the same message, AND if i go to Download Mode, same thing , it wont stay on long enough for me to flash anything to it. and the phone wont boot unless i plug it..i hope its a software issue... if there is a solution i need it badly!!!! Thanks!!
That's a tough one. It loops and gives error on both download mode, recovery mode, and when booting to system? And power needs to be connected to make it boot at all?
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tys0n said:
That's a tough one. It loops and gives error on both download mode, recovery mode, and when booting to system? And power needs to be connected to make it boot at all?
Sent from my Honor 5X using Tapatalk
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Click to collapse
Yes, and it crashed while flashing so ony have access to 10 seconds of download mode. Never heard of this issue or i don't know the magic "google" word for it.
go to samsung or replace battery
FitseMan said:
hello,
i recently flashed a chinese A8 (a8000),it gave a headache following a PIT file issue but it nevertheless completed...assuming it had a battery...i unplugged it while the android robot was cleaning up...it switched off immediately, i tried to boot it, it did... i went to recovery and reset it, then it only goes to charging... so i figured i might have messed it up...so i went to download mode and as it started to flash...it rebooted...Odin gave write error and the phone rebooted to a 'error has occurred...' BSOD. the problem now is, it stays on for 10 seconds and reboots again to the same message, AND if i go to Download Mode, same thing , it wont stay on long enough for me to flash anything to it. and the phone wont boot unless i plug it..i hope its a software issue... if there is a solution i need it badly!!!! Thanks!!
Click to expand...
Click to collapse
I also had a bad experience with a chinese version of a J3 Pro. Luckly I revive it from a chinese forum (google translate... it was a pain in the a..) and succesfully flash a ROM (I didn't find anything on xda).
On that forum were detailes about win drivers version, odin version and so on! Don't ask me what site/forum it was because it was purely random based on google translate...
Keep trying on chinese forums to find a solution, I don't think here you can find anything to use on chinese versions!
I had to reboot my device due to problems with my speaker. Now i'm not able to boot anymore.
I'm only able to get into ODIN Mode, and flashing new FW or TWRP does nothing. It'll flash correctly, but as soon as it sends the reboot command the device powers off and does not boot, and no, it does not reach the "Galaxy s8, powered by android screen".
It does not want to power on, and only responds to the odin button combo, can't boot into recovery either since nothing works.
I was running the latest version of Renovate Ice if that matters.
I've searched trough some other threads, but it seems like i'm the only one that's having this problem.
Any help or thoughts would be greatly appreciated!
Edit 1: I've tried flashing both AQK7 and AQG5. Both flash fine, but as soon as odin sends the reboot command to my phone, it turns off and does not turn on.
Auto Reboot is ticked. Same goes for any version of TWRP, it will flash, but when it has to reboot the device turns off and does not turn on. There's nothing on the screen, its completely black and the only thing that does work is Download Mode. I've also tried ereasing nand, and repartitioning storage. Both seem to have 0 effect. As stated in one of my replies, i was running the latest build of renovate-ice with magisk, no other mods, or themes installed.
Im a bit confused - you can only boot into download mode (not into twrp?) and the phone is in bootloop? Have you flashed anything (mod?) before or activated a substratum theme which could cause this?
The only thing I can think of is a) you delete in twrp file manager the corrupted file, if there is something like this or b) a twrp restore from a backup. Boot into download mode and then do not press vol up to go into odin mode but press vol down to reboot - then immediately press the combo for twrp and you will get to the recovery. This helped my s8 many times when I was in a bootloop and couldnt boot up twrp
FloM94 said:
Im a bit confused - you can only boot into download mode (not into twrp?) and the phone is in bootloop? Have you flashed anything (mod?) before or activated a substratum theme which could cause this?
The only thing I can think of is a) you delete in twrp file manager the corrupted file, if there is something like this or b) a twrp restore from a backup. Boot into download mode and then do not press vol up to go into odin mode but press vol down to reboot - then immediately press the combo for twrp and you will get to the recovery. This helped my s8 many times when I was in a bootloop and couldnt boot up twrp
Click to expand...
Click to collapse
Thanks for the reply! Other than using the Renovate-Ice rom, and running magisk the thing was pretty much stock. wasn't messing around in twrp either. Its not stuck in a bootloop either, it just refuses to do anything other than go in and out of DL mode. The phone does not respond to any button imputs other than DL mode. As stated in the OP it does not boot at all, just a black screen. i've already tried to reflash a stock FW and TWRP, but that does not seem to work...
try the method I did - this is the last thing I could think of, before reflash the whole phone with odin
More info about your speaker problem
popmpopm said:
More info about your speaker problem
Click to expand...
Click to collapse
There isn't much to say about the problem ,it just stopped working, hence why i rebooted the phone, and ran in to the problem i'm having right now.
FloM94 said:
try the method I did - this is the last thing I could think of, before reflash the whole phone with odin
Click to expand...
Click to collapse
Doesn't work sadly, but thanks for the help anyways!
but you havent installed Viper4Arise or anything like that?
Because of this my speaker also stopped working a few weeks ago
if you can get into download mode then get into download mode and leave phone, then download samsung smart switch for your pc (older version like 4.1.17022_20 from here http://www.filehorse.com/download-samsung-smart-switch/29268/ that allows phone based recovery), once installed open it, then click on more at top right, (do not update the software if you get a prompt) select emergency device recovery...., then click on right tab (device initialisation) and fill in your phone details etc., connect your phone (in download mode) and follow the process, maybe it works, you'll need to root and install TWRP again but thats no big issue.
Jostian said:
if you can get into download mode then get into download mode and leave phone, then download samsung smart switch for your pc (older version like 4.1.17022_20 from here http://www.filehorse.com/download-samsung-smart-switch/29268/ that allows phone based recovery), once installed open it, then click on more at top right, (do not update the software if you get a prompt) select emergency device recovery...., then click on right tab (device initialisation) and fill in your phone details etc., connect your phone (in download mode) and follow the process, maybe it works, you'll need to root and install TWRP again but thats no big issue.
Click to expand...
Click to collapse
I've tried this just now, and it still gives me the same result, it goes trough the process, but as soon as it has to reboot it doesn't boot anymore.
Thanks for the suggestion though!
FloM94 said:
but you havent installed Viper4Arise or anything like that?
Because of this my speaker also stopped working a few weeks ago
Click to expand...
Click to collapse
i think phone is damaged by water or dropped s8 so fragile phone ! its happen to me with s5 the phone dead after speaker problem !!
popmpopm said:
i think phone is damaged by water or dropped s8 so fragile phone ! its happen to me with s5 the phone dead after speaker problem !!
Click to expand...
Click to collapse
I've had a case on the phone since day one, and I've checked for water damage, but there is non. The tab that is supposed to indicate it is untouched. But thanks for your input! I appreciate it
I have the same problem. Its look like is bootloader issue. try flash this soft :
G950FOWA1AQCC_Recovery
But if you are on newest rom it wont work.
Hello, you can solve this problem?
Hi!
I used my S7 Edge for a couple of years and now I am afraid it may have died on me. As always, backups of f.e. pictures are not up to date.
During the night, it lay on my Qi charger. When I took it in hand, the screen was extremely dark and stuck in the "loading Lineage" screen. I tried to reboot. It was stuck on the "Samsung Galaxy" screen.
I wanted to boot into recovery and wipe the cache and see if it works again. But I can't boot into recovery mode. No matter if I connect it to a USB cable, the button command does not work.
Switching the device off also isn't possible. The only way to switch it off is disconnecting the battery (I have opened it to do so).
The only thing I can do is booting into download mode (so I know my volume up button works...).
Several times the screen was stuck on the "empty battery" symbol - which did not change no matter how long I had it in the charger. I can't really replicate how I got to the battery screen. I installed another battery just to see if if by some magic this would change something, but nothing changed about my issue. No boot possible and no booting into recovery.
I thought to myself: Well, maybe if I reinstall TWRP I can get into Recovery again. But when I try Odin I get the error message: "there is no PIT partition"
I know you will want additional info:
sadly, I cant' say which version of lineage I had running. I would have to look into my phone - which I can't.
I installed Lineage a couple of years ago, the phone was rooted and had TWRP recovery. I changed my USB port and Audio port several months ago.
But everything was running fine - I did not change or do anything recently. It happened overnight.
Do you have any ideas what I can do? I am brooding for two days now over this issue and I am at the end of the line here.
Did my memory just die on me? Is it an unfixable hardware issue?
Or software-related and potentially salvageable?
thanks in advance for anybody that bothers with my problem.
PinkElf said:
Hi!
I used my S7 Edge for a couple of years and now I am afraid it may have died on me. As always, backups of f.e. pictures are not up to date.
During the night, it lay on my Qi charger. When I took it in hand, the screen was extremely dark and stuck in the "loading Lineage" screen. I tried to reboot. It was stuck on the "Samsung Galaxy" screen.
I wanted to boot into recovery and wipe the cache and see if it works again. But I can't boot into recovery mode. No matter if I connect it to a USB cable, the button command does not work.
Switching the device off also isn't possible. The only way to switch it off is disconnecting the battery (I have opened it to do so).
The only thing I can do is booting into download mode (so I know my volume up button works...).
Several times the screen was stuck on the "empty battery" symbol - which did not change no matter how long I had it in the charger. I can't really replicate how I got to the battery screen. I installed another battery just to see if if by some magic this would change something, but nothing changed about my issue. No boot possible and no booting into recovery.
I thought to myself: Well, maybe if I reinstall TWRP I can get into Recovery again. But when I try Odin I get the error message: "there is no PIT partition"
I know you will want additional info:
sadly, I cant' say which version of lineage I had running. I would have to look into my phone - which I can't.
I installed Lineage a couple of years ago, the phone was rooted and had TWRP recovery. I changed my USB port and Audio port several months ago.
But everything was running fine - I did not change or do anything recently. It happened overnight.
Do you have any ideas what I can do? I am brooding for two days now over this issue and I am at the end of the line here.
Did my memory just die on me? Is it an unfixable hardware issue?
Or software-related and potentially salvageable?
thanks in advance for anybody that bothers with my problem.
Click to expand...
Click to collapse
Hi, try to flash the stock firmware otherwise I really don't know :/
I guess I will lose my data when I install stock firmware, don't I?
What I ask myself is: Is the reason for not being able to boot into recovery that my device always thinks my battery is empty?
Is the fact that I can boot into download mode a sign that my memory and/or motherboard is still intact?
PinkElf said:
I guess I will lose my data when I install stock firmware, don't I?
What I ask myself is: Is the reason for not being able to boot into recovery that my device always thinks my battery is empty?
Is the fact that I can boot into download mode a sign that my memory and/or motherboard is still intact?
Click to expand...
Click to collapse
Are you using Lineage OS? If yes, then definitely yes. On my Xiaomi, I couldn't get into fastboot mode or into recovery, I don't know why and somehow I got there, I don't even know how I think I held the power mode for a long time and when the phone turned on I held the volume up button to get into recovery finally succeeded on the umpteenth attempt and from recovery I restarted the phone in fastboot mode and flashed the stock firmware. And yes, being able to boot your phone into fastboot is a good sign. It would be worse if it wasn't possible.
I am still stuck with the problem. I can boot into download mode. I can't find a way to boot into recovery.
Is there anything I can do in download mode?
If I find the lineage version I originally installed on my device, could I install it via ODIN and get my phone back without data loss? I have only ever installed ROMs via TWRP.
Just an idea, but as of now I get the error "could not find PIT partition" anyway while trying to reinstall TWRP.
PinkElf said:
I am still stuck with the problem. I can boot into download mode. I can't find a way to boot into recovery.
Is there anything I can do in download mode?
If I find the lineage version I originally installed on my device, could I install it via ODIN and get my phone back without data loss? I have only ever installed ROMs via TWRP.
Just an idea, but as of now I get the error "could not find PIT partition" anyway while trying to reinstall TWRP.
Click to expand...
Click to collapse
Yes, you can use download mode to install the firmware via Odin. Look
That means giving up hope for my personal data...
But even if I want to do this, I run into the problem, that I can't install anything due to "could not find PIT partition"...