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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
Sent from my PC36100 using XDA Premium App
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.
Sent from my GT-P7510 using XDA Premium App
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!
================================
Solution: http://forum.xda-developers.com/one...bootloader-locked-t3212187/page2#post63494201
================================
Hello,
This afternoon, I was preparing to flash Oxygen OS 2.1 through twrp but I wanted to make a backup first. Attempting to load up twrp by holding Vol- and Power, my OPT flashed the starting frame of the boot animation for half a second before turning off. This repeated every 5 seconds. I could still boot OOS normally at this stage.
I decided to reflash twrp so as to make the backups, but on attempting to flash it, I saw that my bootloader was locked. So into fastboot mode I went, but trying to unlock it, it did the same as trying to get into recovery. As soon as I sent the command, "fastboot oem unlock", the screen went dark, flashed the starting frame for the boot animation, and promptly when dark again.
I now can't boot up normally, nor can I enter recovery. I can access fastboot mode, but I can't seem to make any changes.
I've attempted to use this solution as well as several other similar ones with no success.
I've had my OPT since 17th of August with absolutely no signs of trouble until this afternoon.
To me, it seems like it could be a hardware issue, but I'd hope it would last more than 40 days.
Any suggestions?
Thanks.
----
x-post: whirlpool, reddit
The same just happened to me, wtf
Makrilli said:
The same just happened to me, wtf
Click to expand...
Click to collapse
What were you doing before it occurred? Perhaps we can work out the cause.
GusGold said:
What were you doing before it occurred? Perhaps we can work out the cause.
Click to expand...
Click to collapse
I'm not sure what I was doing, I was going to flash different ak kernel as my wifi didn't work.
HOWEVER
I read someone suggesting if you still have bootloop after trying the qualcomm recovery tool, try booting to fastboot and use: fastboot continue
my opt booted nicely to hydrogen os and after I shut it down it no longer bootlooped and I was able to get to recovery.
I'll post this to your reddit thread too, maybe it might help somebody one day, hopefully this works for you too
Makrilli said:
use: fastboot continue
Click to expand...
Click to collapse
Mate! that worked for me too!
However... It only seems to skip the bootloop for that power on. After power off, it returns to the boot loop. I also still can't unlock the bootloader and can't access recovery.
But at least it can boot into OS with fastboot continue!
Thank you.
Weird, after the first successful boot I rebooted and a chinese menu prompted me if I wanted to unlock the bootloader, and I did.
Maybe you should try different recovery packages.
But I'm glad to hear you at least got past the boot loop
Makrilli said:
Maybe you should try different recovery packages.
Click to expand...
Click to collapse
Can't flash a new one since the bootloader won't unlock :/
I guess the phone is in working order at the moment, I just can't let it get turned off without my computer next to me...
GusGold said:
Can't flash a new one since the bootloader won't unlock :/
I guess the phone is in working order at the moment, I just can't let it get turned off without my computer next to me...
Click to expand...
Click to collapse
Nono I mean different qualcomm recovery packages, the ones with MSM8994DownloadTool, I also replaced the stock recovery in the qualcomm package with twrp just in case if that matters
Makrilli said:
Nono I mean different qualcomm recovery packages, the ones with MSM8994DownloadTool, I also replaced the stock recovery in the qualcomm package with twrp just in case if that matters
Click to expand...
Click to collapse
Ahh, do you mind linking me to the one you used?
I think I used this: https://mega.nz/#!EsNQHKab!ifATzg4rxxBniPad0iyxANqlN8cZpUx2MVWaZgEhrD4
but it might have also been this: https://drive.google.com/file/d/0B14IjYN3PtxcSlJ5aGQxX3JERHM/view?usp=sharing
It's also worth mentioning I flashed both a few times before I tried the fastboot continue command so try both a few times and see if that helps, also I replaced the stock recovery with twrp in both recovery packages before flashing.
Edit: And best of luck, I'm rather confident your OPT is going to work properly again.
Boot Loop
I got the same problem.
Phone is rooted and i can't unlock it in cmd, just reboot itself when i try it.
The only way for me to even start the OPT is to (volume+ and power), to get to fastboot mode, then run "fastboot continue" twice in cmd.
If i reboot the phone it get cought in a boot loop where i can see the logo, reboots about every 2 sec.
Is there a solution for this? I've been searching 2 for two days now.
I don't care if i have to reset the entire phone.
p3wb said:
I got the same problem.
Phone is rooted and i can't unlock it in cmd, just reboot itself when i try it.
The only way for me to even start the OPT is to (volume+ and power), to get to fastboot mode, then run "fastboot continue" twice in cmd.
If i reboot the phone it get cought in a boot loop where i can see the logo, reboots about every 2 sec.
Is there a solution for this? I've been searching 2 for two days now.
I don't care if i have to reset the entire phone.
Click to expand...
Click to collapse
And I'm guessing you have tried the qualcomm recovery tool?
And I'm guessing you have tried the qualcomm recovery tool?[/QUOTE]
I got TWRP installed but its unreachable, volume- and power ends in boot loop.
I can´t install anything when the phone is locked.
I even tried a Factory reset, boot loop and no change when i got it up again.
p3wb said:
And I'm guessing you have tried the qualcomm recovery tool?
Click to expand...
Click to collapse
I got TWRP installed but its unreachable, volume- and power ends in boot loop.
I can´t install anything when the phone is locked.
I even tried a Factory reset, boot loop and no change when i got it up again.[/QUOTE]
Yeah but the qualcomm recovery tool that we discussed on the first page?
Sent from my OPT
Makrilli said:
I got TWRP installed but its unreachable, volume- and power ends in boot loop.
I can´t install anything when the phone is locked.
I even tried a Factory reset, boot loop and no change when i got it up again.
Click to expand...
Click to collapse
Yeah but the qualcomm recovery tool that we discussed on the first page?
Sent from my OPT[/QUOTE]
I finally got my OPT working again, tried Qualcomm recovery tool, wasn't able to complete the "MSM8994DownloadTool"
So i downloaded "A2001_14_A.03_150805" in a guide from technobuzz.net/unbrick-oneplus-2/
A similar but it does a entire wipe of the phone, nothing left at all. WARNING!
But i was okey with it.
Well the phone was in Chinese when it was all done but to change language was no problem.
I finally managed to solve it on mine. I had been cautious over the past weeks to not let it run out of battery or get turned off while away from my computer as
Code:
fastboot continue
was the only way I could get past the boot loop.
My core issue to solve was that I couldn't get it recognised as the USB Diagnostic 9006 under Ports in Device Manager. I installed the driver from here manually by right clicking the /qcser/x64/qcser.inf file and selecting install from the context menu. Then, I powered off my OP2. While only holding Vol+ (not power or Vol-), I plugged in my OP2 to the computer and it was finally recognised as the 9006. Then using the recovery tool from the prior link, it installed and rebooted my OP2. The moment of truth was when it rebooted and didn't enter a boot loop!
Then with the Chinese recovery prompt, I selected the top/first option and it brought me to the welcome/first setup screen of OOS.
It wiped the internal memory, and installed OSS 2.0.2 (don't know if coincidence or not as that was my prior OS as well). Now to install twrp and update to the latest OOS hopefully without a hitch.
Happy to finally know it wasn't a hardware issue like a failed eeprom or a dud nand controller as my prior phone (Samsung Note 10.1) died to a failed nand controller as well.
Will update with news of twrp and OOS, but I feel that should go smoothly now. Thanks to the others that helped in this thread too!
Yeap, all good!
Flashed official twrp through fastboot and batch installed OOS2 through 2.1.1 patches and SuperSU. Everything working like new!
Phew.
hi can one of you guys help me out? on teamviewer? mine is stock in the bootloop and i can only get it to boot up via fastboot continue. and i cant figure out how to get it to work. i would like to go back to complete stock and no root
best Martin
gamdiiii said:
hi can one of you guys help me out? on teamviewer? mine is stock in the bootloop and i can only get it to boot up via fastboot continue. and i cant figure out how to get it to work. i would like to go back to complete stock and no root
best Martin
Click to expand...
Click to collapse
Is it recognised as a USB Diagnostic 9006 in your device manager?
Hi GusGold No its 9008
I've successfully rooted my T-Mobile LG Leon, and I've successfully installed TWRP, but for the life of me, I can't get the phone to boot into recovery. I can RE-boot into recovery from TWRP manager, but I can't actually boot into it from a fully powered-down state. I've tried every combination of the power and volume buttons I can think of, and nothing ever works. Download Mode works, the factory restore menu works, but I CANNOT get into recovery. Is there a very specific set of instructions anywhere that I can follow?
EDIT: Okay, I finally figured it out: You need to actually select to do a factory reset, and it throws you into the recovery menu.
Yeah, it was because the stock recovery doesn't exist as a menu, when you're running stock and enter the adb command "adb reboot recovery" it will reboot to the "factory reset mode" and the actual file of this mode is stored on partition named "recovery". Choosing the factory reset option boots the custom recovery because it replaces the said " factory reset mode" and that's the trick.
You can access recovery from the powered off state by holding volume down and power on until you see the lg sign. Without letting go of volume down, depress on the power button before clicking it back in and holding both buttons in until you see twrp pop up.
If you reboot to recovery now, it''ll probally say secure booting error. Simply go to the Developer options and enable OEM Unlock and that'll make you boot to it
You boot in the download mode by holding the vol up 10 seconds and during this 10 seconds you insert the usb. The LG Leon brand screen will come on a minute then it will go into download mode. It says not to unplug until firmware is done updating. So I guess you should have your custom recovery or whatever before you do this. I have only got this far, and thusly it sits. All Dressd up with no where to go...haha
kruc Ire said:
You boot in the download mode by holding the vol up 10 seconds and during this 10 seconds you insert the usb. The LG Leon brand screen will come on a minute then it will go into download mode. It says not to unplug until firmware is done updating. So I guess you should have your custom recovery or whatever before you do this. I have only got this far, and thusly it sits. All Dressd up with no where to go...haha
Click to expand...
Click to collapse
can't find "enable OEM" at all in developer options. have phone hooked computer, and on, it's sending and receiving. No OEM. Isn't there.
See, I'm trying to root this without using KingUser. Since I found that it was pretty easy to do from the very beginning with Samsung, and I just don't see any way to do it here. I can't get ADB Devices command to see the phone.
kruc Ire said:
can't find "enable OEM" at all in developer options. have phone hooked computer, and on, it's sending and receiving. No OEM. Isn't there.
See, I'm trying to root this without using KingUser. Since I found that it was pretty easy to do from the very beginning with Samsung, and I just don't see any way to do it here. I can't get ADB Devices command to see the phone.
Click to expand...
Click to collapse
I think I have the same issue, but I rooted my phone using kingroot, I haven't tested the adb commands, I just want to use twrp but no luck, it says Secure booting error and I can't find OEM Unlock option in Developer Menu.
duffycop said:
I think I have the same issue, but I rooted my phone using kingroot, I haven't tested the adb commands, I just want to use twrp but no luck, it says Secure booting error and I can't find OEM Unlock option in Developer Menu.
Click to expand...
Click to collapse
I got a good way to get it rooted with SuperSU. Ran a command window script I found out there. It worked and now I have SuperSU root. I also figured out how to get into recovery. It looks as though my phone is not the standard LEON that people are talking about here. It's got a few designations, and the T Mobile site advertises a Leon that seems very similar and is called by the name most are using..
Anyhow my LG Leon is designated as a H320. It also carries a v10 desiganation, v10b. The v10 is variable from a-h or a-i. It would seem that once it is updated to 5.1.1 android it gets upped, and becomes unrootable. Mine being a v10b was rootable, but it took me a while to get used to it, and make the command window work.
Unfortunately for me one of many things I tried before getting it rooted, was ADB fastboot. And since this told me to wait for too long, I pulled the plug on it and pulled the battery to get back into "normal" operations. Perhaps I should have waited, because after finding out a few things about the phone, I discovered the true way to get it into recovery:
The real way into recovery for my phone, is to (from power off state) hold the volume up, a few seconds, then plug the USB cable which is going to the computer into the phone. While holding the volume up until it comes to recovery. This will activate the recovery, (Now for me it activates that fastboot command line...and does nothing else). This was the bit of information I could have used from the beginning, that no one knows. All these places tell you to hold the power and volume up, and then let off power when the screen changes, but that never worked even once. You just hold the volume, and plug the USB from computer. This works.
For me it goes into a "FASTBOOT" header at the bottom of the screen that never changes.
I believe it does this because of my unsuccessful attempt to fastboot it before. And it does not have the right driver to get recognized in the computer. So I'm screwed as far as the recovery goes now.
It is rooted though. And it doesn't seem to have any alternate ROMS available anyways. so we're dealing with the loss of the recovery.
When I do try to use an app such as TWRP manager or CWM (ROM) Manager to reboot into recovery, I get a "boot certification verification -1" error instead of the fastboot line at the bottom of the startup screen and it boots normally from there. So many people asked about this "boot certification verification -1" and NO answers are available anywhere online. So that's where it stands for this phone right now.
Anyone know what driver I should use to get the thing recognized in the computer? I have downloaded a zipped fastboot tools, and it won't get recognized inside the driver manager as "android" only as "unknown device" so I can't use that route....I'm thinking about doing a factory reset to try to erase the fastboot attempt. That may not help though. Anyone?
kruc Ire said:
I got a good way to get it rooted with SuperSU. Ran a command window script I found out there. It worked and now I have SuperSU root. I also figured out how to get into recovery. It looks as though my phone is not the standard LEON that people are talking about here. It's got a few designations, and the T Mobile site advertises a Leon that seems very similar and is called by the name most are using..
Anyhow my LG Leon is designated as a H320. It also carries a v10 desiganation, v10b. The v10 is variable from a-h or a-i. It would seem that once it is updated to 5.1.1 android it gets upped, and becomes unrootable. Mine being a v10b was rootable, but it took me a while to get used to it, and make the command window work.
Unfortunately for me one of many things I tried before getting it rooted, was ADB fastboot. And since this told me to wait for too long, I pulled the plug on it and pulled the battery to get back into "normal" operations. Perhaps I should have waited, because after finding out a few things about the phone, I discovered the true way to get it into recovery:
The real way into recovery for my phone, is to (from power off state) hold the volume up, a few seconds, then plug the USB cable which is going to the computer into the phone. While holding the volume up until it comes to recovery. This will activate the recovery, (Now for me it activates that fastboot command line...and does nothing else). This was the bit of information I could have used from the beginning, that no one knows. All these places tell you to hold the power and volume up, and then let off power when the screen changes, but that never worked even once. You just hold the volume, and plug the USB from computer. This works.
For me it goes into a "FASTBOOT" header at the bottom of the screen that never changes.
I believe it does this because of my unsuccessful attempt to fastboot it before. And it does not have the right driver to get recognized in the computer. So I'm screwed as far as the recovery goes now.
It is rooted though. And it doesn't seem to have any alternate ROMS available anyways. so we're dealing with the loss of the recovery.
When I do try to use an app such as TWRP manager or CWM (ROM) Manager to reboot into recovery, I get a "boot certification verification -1" error instead of the fastboot line at the bottom of the startup screen and it boots normally from there. So many people asked about this "boot certification verification -1" and NO answers are available anywhere online. So that's where it stands for this phone right now.
Anyone know what driver I should use to get the thing recognized in the computer? I have downloaded a zipped fastboot tools, and it won't get recognized inside the driver manager as "android" only as "unknown device" so I can't use that route....I'm thinking about doing a factory reset to try to erase the fastboot attempt. That may not help though. Anyone?
Click to expand...
Click to collapse
I dunno, I have the H340AR, with this phones happens the same that with the Samsung Galaxy Ace 3, there are, 3G versions, 4G versions, regional versions, etc.. GA3 have 7275R, 7275B, 7272L, 7272T, I dunno, maybe if we could get a device tree for a H340 and an H320 we could make some TWRP and CM compiling, but I just can't figure it out how to make a device tree or even where to begin..
I successfully rooted my H340AR with Kingroot, it works like a charm. I haven't tried fastboot and I tried to install TWRP in this link https://dl.twrp.me/c50/ but I get that F error "Secure booting error". I guess I have my bootloader locked, so I'm trying to figure out how to unlock my bootloader.
I'm trying to contact with some developers and see if anyone can help me build a device tree.
]
Hi, I have that same phone H340AR LTE. I rooted it with Kingroot and also tried to use TWRP to gen into recovery and got that Security error. I only pulled out the baterry and turn it on again so it booted normally. I made a factory reset because I read that it could be a problem of OTA firmware update. Then I installed TWRP and BusyBox again and tried to get into recovery from TWRP option. When I did that, it showed up the Android lying in his back with a red triangle. I pulled a out the battery again and yes, it seems very dumb and simple but it worked and could reboot the phone.
However, I can't get into recovery from TWRP yet. I read that the problem with us not being able to unlock the bootloader(we don't have the OEM option) is because Leon has Lollipop 5.0.1 and OEM is for 5.1.1
pedrovay2003 said:
I've successfully rooted my T-Mobile LG Leon, and I've successfully installed TWRP, but for the life of me, I can't get the phone to boot into recovery. I can RE-boot into recovery from TWRP manager, but I can't actually boot into it from a fully powered-down state. I've tried every combination of the power and volume buttons I can think of, and nothing ever works. Download Mode works, the factory restore menu works, but I CANNOT get into recovery. Is there a very specific set of instructions anywhere that I can follow?
EDIT: Okay, I finally figured it out: You need to actually select to do a factory reset, and it throws you into the recovery menu.
Click to expand...
Click to collapse
when i pressed factory reset all it did was to a factory reset even though i flashed twrp.img successfully... help?
lg leon h345 lollipop 5.1.1
This device has a locked bootloader. If you flash a custom recovery on it, it will not boot into recovery, but will report a security issue. You will lose all recovery functionality, including factory reset, adb, fastboot. If your phone fails to boot, you have a brick.
So, about 6mos ago, my Nexus 10 stopped working and I couldn't get it back working...eventually moved onto a new tablet, which now I hate....
Anyway, I figured I'd head back to my N10 because I loved it. However, one of the reasons I left it was because it was stuck in bootloop and I was pretty sure it was bricked.
The bad news, I have followed MANY, if not ALL, of the suggestions on getting it back, I just cannot get it to boot. The good news, fastboot connects with the tablet. So, some specifics:
The tablet WILL boot into fastboot and I can send commands and the tablet is unlocked (also, I believe someone said they had issues because they had an older version of ADB and Fastboot. I'm pretty sure I downloaded the 'most current' version 1.4.3). So, with that, I was able to do the fastboot erase functions, such as cache, userdata, system, etc... and then also load the bootloader (mantafm01) and also send the stock .zip file (image-mantaray-....) and the tablet appears to load everything fine. Thumbs up, right? However, when it reboots it stops at the 'erasing' android bot and will not pass that. I left the tablet in that state for a few minutes all the way up to 3 days...no success.
I also tried the above using Wugfresh only to have the same thing occur. So, basically, I am stuck at 'erasing' and I don't know what to do. I feel confident that the tablet has the ability to be brought back to life, I just cannot figure out how/why all of the attempts lead to the same issue.
What I can also tell you is that while fastboot 'sees' the tablet, the tablet does not appear as a device in "My Computer" like it normally did when connecting via USB. I am using the original USB cable and have tried on multiple computers, all to no avail. I've downloaded/installed the drivers, as instructed on many links. Also, while I can get to the 'Recovery Mode' by pressing Power, Volume Up, Volume Down, if I choose "Recovery Mode" on the tablet, it reboots and goes to the 'erasing' screen. I have tried flashing TWRP on the tablet using fastboot as well. And, sometimes, not all the time, the TWRP blue/black screen appears but it will not progress past that screen (i.e., it doesn't go into recovery).
So, if you can, please help. I believe I have followed all of the instructions, but I have to be missing something or not following something correctly. I'm stoked that it looks like it's only soft-bricked, I just can't get it un-bricked.
Thanks in advance!
Looks like you are trying hard to find a solution. I think it may be helpful if you try to manually install the o/s rather that using Wugfresh and report back any errors. See
https://androidforums.com/threads/guide-how-to-flash-a-nexus-factory-image-manually.706533/ At step 11 I would flash the individual image files and also follow the instructions re erasing and flashing userdata.
AFAIK you will not see an Android device when using Fastboot - Android hasn't loaded at this stage.
Thanks peterk-1. Unfortunately, this does not work. I followed the steps, with the exception of the radio file as my Nexus 10 is wi-fi only. It goes through the stock image update perfectly fine and reboots itself. At that point, it's back to the moving android at the 'erasing' screen.
One thing to note with the link you provided; no where does it indicate flashing a recovery, stock or custom. Now, I've tried flashing stock, TWRP and CWM and none seem to work. TWRP comes closest with the black/blue splash screen, but will not open further.
Any other suggestions would be appreciated.
You did go to the posted link? I quote:
Step 8: We now want to wipe the device. Use the following commands in order:
........
fastboot erase recovery
............
Step 11: We will now flash the system, boot, and recovery ..........................................
fastboot flash recovery recovery.img
Unfortunately, same result...
Hi
I know this is an old device but I got it for free and feel it's a good device to experiment on. Looked thru all the posts I could pertaining to this but am not clear what to try next and wish to avoid bricking.
I have tried to flash various versions of TWRP and none will boot. Can still get into fastboot, device is recognized by adb. Says it is loading, but when I try to get to TWRP recovery I only get the exclamation point. I can get to the stock bootloader (is that right?) with Power+Volume up.
On power up it goes thru the Android startup but then I am presented with a screen asking for location, goes to WiFi step and hangs. No problem powering down and getting to fastboot.
What should I do next? My thought is to try and re-install factory image (have it) via directions here - https://forum.xda-developers.com/showthread.php?t=1781250
Any other suggestions?
This is great - I can answer my own post!
Digging around I read post for a Samsung Device having same problem. Solution was that the device would re-write the bootloader on reboot (the solution there was an option to not overwrite bootloader in Odin).
So instead of running 'fastboot reboot' I ran 'flashboot reboot-bootloader' and there was TWRP.