Return to Stock Kernel - Xoom Q&A, Help & Troubleshooting

Here is the deal. Got my wifi only on launch day. Soon there after rooted. Installed bigdogrush 1.3 kernel. Tried to update to sdcard support. Each time I tried it would screw up my wifi....so I eventually gave up. Here is the real problem. Now I can't install recently released 3.1 update. Can anyone explain to me how to return to the stock kernel? I understand this will allow me to install the 3.1 update. Thanks for any help.

xhuck1 said:
Here is the deal. Got my wifi only on launch day. Soon there after rooted. Installed bigdogrush 1.3 kernel. Tried to update to sdcard support. Each time I tried it would screw up my wifi....so I eventually gave up. Here is the real problem. Now I can't install recently released 3.1 update. Can anyone explain to me how to return to the stock kernel? I understand this will allow me to install the 3.1 update. Thanks for any help.
Click to expand...
Click to collapse
try this, i just did it and works great. you basically need to download the stock images and use adb to push them. btw i assume you have a us version wifi only xoom. i would skip the last step about relocking it, if you plan to upgrade your kernel after your on 3.1.
http://developer.motorola.com/products/software/
once your back to stock everything, you can safely update to 3.1

I appreciate your help. Problem is I don't know how to do the things you are talking about. I've downloaded the images and the sdk. I'm not sure where I should put them on my zoom. Also when I try to run fastboot I get a device not found message. I also get a AdbWinApi.dll not found. I have no idea how to fix any of this. Yes I have a U.S. WIFI. I used the one click rook method. Is there a one click method out there that would help me?

If you're using windows, open the SDK folder and browse to the tools folder. Copy the img files to that folder.
Now open a command prompt and browse to the SDK Folder\tools folder (this folder as the fastboot.exe file that we're going to use and now the img files are also here!)
Now reboot your XOOM into fastboot mode (turn off the xoom, then turn the XOOM back on and while at the "Dual Core" logo, start pressing volume down until you see "--> Fastboot" up on the top left corner then press volume up to start the fastboot protocol).
Once you're in fastboot mode, in the command prompt, type fastboot devices to make sure your xoom is listed on there. If not, check to make sure your system isn't missing drivers, if so, download the xoom drivers again or if you have the Motorola Mobile Drivers installed already, open the Motorola Mobile Driver Installer and do an update to make sure you have the latest drivers).
Once you've confirmed that fastboot can talk to your xoom, run this commands:
Code:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lock
Your xoom will then relock itself, format, and reboot.
This is as clear as I can be.
If need to, re-run the SDK Manager and make sure you have the correct packages installed needed.

xhuck1 said:
Here is the deal. Got my wifi only on launch day. Soon there after rooted. Installed bigdogrush 1.3 kernel. Tried to update to sdcard support. Each time I tried it would screw up my wifi....so I eventually gave up. Here is the real problem. Now I can't install recently released 3.1 update. Can anyone explain to me how to return to the stock kernel? I understand this will allow me to install the 3.1 update. Thanks for any help.
Click to expand...
Click to collapse
I'm betting the reason your wifi isn't working is because you didn't push the .ko files. Think of those as driver files. You probably just flashed the boot partition.

Related

[Q] I think I bricked the xoom after 4g upgrade??

- This is pretty much an exact duplicate of a thread I posted on Xoomfoums, but I think it maybe better here...
Anyway, really looking for a miracle!! I got my xoom back from Moto yesterday for the 4G upgrade and I tried to root the device the same way I have done before. I got as far as unlocking it. The last thing I flashed was a “bootloader_patch” from a guide on Xoomforums. Now I’m stuck and I only found one person who had this issue …… he returned his device for a new one
So summary thus far.
- I can get into Fastboot support and flashing always yields “success”.
- I seem to have no ADB connectivity. (don’t know if I really need it for fixing this issue since I can fastboot and flash).
- I have tried, stock images, CWM recoveries, rogue recoveries, also some HLK75 imgs, etc!! All leave me at the same place.
Where am I stuck:
- I reboot and let it go normally and she hangs at “Moto screen”
- I reboot and tap the “volume down” leaves our three choices….
-- Android recovery -> tried to enter recovery and sits at the famous “Reading ODM fuse:1”
-- Fastboot -> That works, I can flash from here OK
-- RSD support -> Haven’t played with that, I have read people going to dark places when they screw with this. If I have to I’ll do so carefully.
All the methods of going back to OEM are epic fails. Nothing new happens, but I am always left with the same result.
Any help you could lend would be greatly appreciated!! I really would rather truck through this than return it however I’m afraid if I don’t get rid of it soon it will be harder for me to make an excuse to the retailer.
Thanks - John
jadkar said:
- This is pretty much an exact duplicate of a thread I posted on Xoomfoums, but I think it maybe better here...
Anyway, really looking for a miracle!! I got my xoom back from Moto yesterday for the 4G upgrade and I tried to root the device the same way I have done before. I got as far as unlocking it. The last thing I flashed was a “bootloader_patch” from a guide on Xoomforums. Now I’m stuck and I only found one person who had this issue …… he returned his device for a new one
So summary thus far.
- I can get into Fastboot support and flashing always yields “success”.
- I seem to have no ADB connectivity. (don’t know if I really need it for fixing this issue since I can fastboot and flash).
- I have tried, stock images, CWM recoveries, rogue recoveries, also some HLK75 imgs, etc!! All leave me at the same place.
Where am I stuck:
- I reboot and let it go normally and she hangs at “Moto screen”
- I reboot and tap the “volume down” leaves our three choices….
-- Android recovery -> tried to enter recovery and sits at the famous “Reading ODM fuse:1”
-- Fastboot -> That works, I can flash from here OK
-- RSD support -> Haven’t played with that, I have read people going to dark places when they screw with this. If I have to I’ll do so carefully.
All the methods of going back to OEM are epic fails. Nothing new happens, but I am always left with the same result.
Any help you could lend would be greatly appreciated!! I really would rather truck through this than return it however I’m afraid if I don’t get rid of it soon it will be harder for me to make an excuse to the retailer.
Thanks - John
Click to expand...
Click to collapse
When it sits at "Reading ODM Fuse1" can you press power to see if it will select that option and take you into CWM recovery (assuming you have that installed)?
When you say you are flashing from fastboot protocol, are you connected to your pc? What are you flashing? I'm a bit lost with your description...
^^^
Thanks for the reply. Good suggestion on the power button.. press as its sitting at "Reading ODM fuse:1" but....... not good
So I didn't list all the things I have flashed because I tried many many fixes from multiple guides. I could look through all the links if you want the exact names but none of the made a difference. Yes, flashing from my PC connected via USB.
So after the first root guide blew it up I tried to flash a bunch of recoveries and system images. I also tried to bring her all the way back to OEM using the appropriate guide. No matter what I flashed I was given a successful message but it still gets stuck at the same screens. Nothing gives me any different results. I'm wondering if the actual bootloader is hosed. If so can you flash a new bootloader?
Here's some stuff I have flashed along with some links....
recovery-Tiamat-R4c-100611-1150-cwm.img
MZ600_HRI66_OEM_Image
how to root guide that I origianlly followed.... http://www.xoomforums.com/forum/mot...ow-root-3g-4g-wifi-only-xoom-stock-3-1-a.html
Someone got the build img after the LTE upgrade, so I tried this....
http://www.xoomforums.com/forum/xoo...rade-stuck-recovery-reading-odm-fuse-1-a.html
I also tried from fastboot erasing all the partitions before I flashed them and that didn't help.
Thanks for your time!!
jadkar said:
^^^
Thanks for the reply. Good suggestion on the power button.. press as its sitting at "Reading ODM fuse:1" but....... not good
So I didn't list all the things I have flashed because I tried many many fixes from multiple guides. I could look through all the links if you want the exact names but none of the made a difference. Yes, flashing from my PC connected via USB.
So after the first root guide blew it up I tried to flash a bunch of recoveries and system images. I also tried to bring her all the way back to OEM using the appropriate guide. No matter what I flashed I was given a successful message but it still gets stuck at the same screens. Nothing gives me any different results. I'm wondering if the actual bootloader is hosed. If so can you flash a new bootloader?
Here's some stuff I have flashed along with some links....
recovery-Tiamat-R4c-100611-1150-cwm.img
MZ600_HRI66_OEM_Image
how to root guide that I origianlly followed.... http://www.xoomforums.com/forum/mot...ow-root-3g-4g-wifi-only-xoom-stock-3-1-a.html
Someone got the build img after the LTE upgrade, so I tried this....
http://www.xoomforums.com/forum/xoo...rade-stuck-recovery-reading-odm-fuse-1-a.html
I also tried from fastboot erasing all the partitions before I flashed them and that didn't help.
Thanks for your time!!
Click to expand...
Click to collapse
Well, you are flashing wildly but not well, (JK)
This thread should help you:
http://forum.xda-developers.com/showthread.php?t=1299485
Here is a great post by Saintfyre (I think it fits the bill):
"Yeah join the FUBAR Club.
I was in the same boat as you did the same thing.
I now have my Xoom back to HLK75C and have 4G/3G and Wifi connectivity again so all is not lost!
What I did to fix my situation:
-I wiped the Device and just went through Solarnz's Root Method here: http://forum.xda-developers.com/showthread.php?t=1074979.
-Download the HLK75C (This is the build the 4G Xoom's shipped back with) file that AceXMachine provided here, post #6
-Extract the File to your Android SDK Platform-Tools folder, password is AceXMachine
-Follow his instructions to apply the images. I copy pasted but all credit goes to him for putting this out there.
On Windows shift and right click the Platform-Tools folder -> Open Command Window here.
adb reboot bootloader
fastboot flash boot boot.img
fastboot flash system system.img
fastboot erase cache
fastboot reboot
After following all of this I had my Xoom back just like it had come back from Moto after the upgrade. I've since then flashed the Tiamat Tachi OC GPU Kernel to have Overclocking again. No issues since then, have full 4G/3G Connectivity and Wifi has no issues as well."
From this thread:
Yup.....I tried that one as well, it didn't work either.
I really think the bootloader is shot. Is there a way to repair it? I think what killed this was the last .zip file I updated as part of the root guide I was using, it was "bootloader_patch.zip" found here..... Bootloader_patch Does anyone know what this does??
**edit: Is the boot.img the bootloader?? If so ... forget it as I already tried flashing a couple new ones during my attempts to bring it back to OEM.
So my logic now is rather than keep flashing like crazy let me try and get recovery working. For this I will try and erase everything using fastboot (my only option) and then flash a boot.img and a recovery.img
Questions:
- Will keeping everything earsed from the device except for a boot.img and a recovery.img allow me to get into recovery? I want the minimum amount of partitions flashed. I want to just work slowly and systematically trying to get into recovery first.
- I do not have ADB support, can this be a hint? Shouldn't adb support be working or do you need to have somthing in the system / app partition for ADB to communicate with. I know its called Android debugging bridge so the name makes me believe that I need an android OS loaded and this is why my ADB doesn't work.
Please take a look below and let me know if anyone has any suggestions on different boot.img or recovery.img Ihave not tried. Also, I'm wodnering which ones I should try in combination.
Going forward I'm going to keep track of each combination I try as to avoid duplicated / wasted effort.
recoveries I have tried:recovery-Tiamat-R4c-100611-1150-cwm.img
recovery image from steady Hawkin (3g/4g Stock Images for HR166)
Rogue-recovery image from rogue-recovery-1.2.0
Boot images I have tried:boot from steady Hawkin (3g/4g Stock Images for HR166)
boot from AxeMachine HLK75Csystemboot
boot from AxeMachine HLK42Bsystemboot4g
jadkar said:
So my logic now is rather than keep flashing like crazy let me try and get recovery working. For this I will try and erase everything using fastboot (my only option) and then flash a boot.img and a recovery.img
Questions:
- Will keeping everything earsed from the device except for a boot.img and a recovery.img allow me to get into recovery? I want the minimum amount of partitions flashed. I want to just work slowly and systematically trying to get into recovery first.
- I do not have ADB support, can this be a hint? Shouldn't adb support be working or do you need to have somthing in the system / app partition for ADB to communicate with. I know its called Android debugging bridge so the name makes me believe that I need an android OS loaded and this is why my ADB doesn't work.
Please take a look below and let me know if anyone has any suggestions on different boot.img or recovery.img Ihave not tried. Also, I'm wodnering which ones I should try in combination.
Going forward I'm going to keep track of each combination I try as to avoid duplicated / wasted effort.
recoveries I have tried:recovery-Tiamat-R4c-100611-1150-cwm.img
recovery image from steady Hawkin (3g/4g Stock Images for HR166)
Rogue-recovery image from rogue-recovery-1.2.0
Boot images I have tried:boot from steady Hawkin (3g/4g Stock Images for HR166)
boot from AxeMachine HLK75Csystemboot
boot from AxeMachine HLK42Bsystemboot4g
Click to expand...
Click to collapse
How have you flashed zip files without ClockworkMod recovery? It's hard to brick a Xoom but you may be close.
If there is anyway to flash your device's stock images through fastboot, that is your best hope at this point.
okantomi said:
How have you flashed zip files without ClockworkMod recovery? It's hard to brick a Xoom but you may be close.
If there is anyway to flash your device's stock images through fastboot, that is your best hope at this point.
Click to expand...
Click to collapse
Yeah, so I have another thread running on xoomforums and I have explained over there that just about 30 minutes ago I erased everything and reflashed the "HRI66" files. I used everything from that build so there was just the stock recovery, etc. I even did a fastboot oem lock. This didn't work either.
After this I was able to return to fastboot and "unlock", so now I am just back to where I was before.
Me and one other dude think I have a corrupetd / damaged partition or semi-destroyed bootloader. The thing is I can't get an answer to a real simple question.....
is the bootloader a "flashable" component?? I'm not sure if the boot.img IS the bootloader or the bootloader is something else that's not flashable at all. If the later is true then maybe my bootloader is FUBAR.
Thanks!! John
I'm the other guy jadkar was referring to from Xoomforums. He's pretty much put it succinctly but here's my version
ggrant & fish over at Xoomforums suggested we PM solarnz (etal) or post over here for help. I am writing this for myself and another Xoom user. We've both sent our Xoom's to Moto for the 4G upgrade, received them back with 3.2.2, and then proceded to root the wrong ROM over the top. The result was a hang at the red Logo. In hindsight, we should have used Universal Root.
We've both exhausted the experience at Xoomforum (hence our plea here Anything you can suggest would be most appreciated. Personally, I think something is awry in the recovery partition size (perhaps changed by Moto at the upgrade?):
To save the basic suggestions off the bat, we've done the expected already: Installed moto's drivers, tried new cables, AND an entirely different computer. We've tried completely erasing boot, system, recovery, cache and userdata partitions, and flashing back the stock HRI66 images with fastboot.
ADB doesn't recognize the 'devices' command, only fastboot see's the Xoom. Accordingly, the only way to get into fastboot protocol is to Vol Up + power, and wait the three seconds and toggle. We can both toggle (with Vol) into Recovery, RSD and Fastboot). After flashing MULTIPLE flavours of Recovery images, the result is always the same: Recovery hangs reading fuse: 1. There's never the Recovery menu or graphic of the the Droid robot.
As for RSD, I've tried all the way through RSD Lite 5.0 with the thought of using solarnz' (I think) recovery.SBF. The result there is always the same as well: By toggling into RSD mode (Vol+Power into RSD), RSD Lite see's the device OK, but shows an error stating initialization values cannot be read. Note this occurs immediately upon plugging the Xoom in, even before TRYING the SBF file, which BTW, fails even if you try.
Via fastboot, we can oem lock and unlock (note however that in the command window, it states that it failed due to too many links, the the action seems to have worked on the Xoom anyway.)
So, it's down to THIS; the common thread for both of us is that we cannot successfully get into recovery, no way, no how. Again, ADB won't recognize the Xoom, only Fastboot
Any help would be APPRECIATED!
P.S. John, if we don't get help here, I have a 9mm with two spare rounds (for the Xoom's, not us!)
^^^
Thanks .... we'll see if anyone bites.... I hope so
As for the 9mm ........ Thanks but I have a flight this morning and I'm seriously thinking about dropping the Xoom out my plane from lets say 3500ft!!
LOL! Safe flight.
Guys, you all are crazy!
I appreciate your resourcefulness, but it sounds like you're almost out of options, lol.
If you can get to 'starting fastboot protocol' you are not bricked. If you cannot connect your Xoom via adb while your Xoom is in fastboot, it usually indicates that there is something wrong /missing from your setup.
Are you sure you have all your moto drivers installed and the proper image files in your platform tools (or tools folder) and you are actually in the right directory when opening the command window?
Please try to follow the instructions in the following
thread before you commit mayhem on your innocent Xooms.
http://forum.xda-developers.com/showthread.php?t=1249798 for setting up everything you need to ensure that adb will work and a proven method to install cwm recovery and root once you have been able to get back to a proper stock image. What I can't find at this moment are the 4G stock image files. You need the following to flash through adb/fastboot: system.img, boot.img, recovery.img, and userdata.img.from the Honeycomb 3.2.2 4G Xoom.
Commands to use:
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot reboot
Don't give up...good luck!
Found out another guy tried 2 different PC's and it did the same thing. He even reloaded android sdk. He decided to try a 3rd PC that he had to load sdk to. It worked! So he found there is an issue somewhere with his 2 PC's sdk or windows install. When I got my xoom in June sdk would see it, but I never rooted at that time. However I did update and install all the new stuff for sdk.
Sent from my Xoom using xda premium
okantomi said:
Guys, you all are crazy!
Click to expand...
Click to collapse
Probably... That's half the fun!
okantomi said:
Are you sure you have all your moto drivers installed and the proper image files in your platform tools (or tools folder) and you are actually in the right directory when opening the command window?
Click to expand...
Click to collapse
Most assuredly. I develop Android apps with Eclipse. I know how to use SDK.
okantomi said:
Please try to follow the instructions in the following
thread before you commit mayhem on your innocent Xooms.
http://forum.xda-developers.com/showthread.php?t=1249798
Click to expand...
Click to collapse
Too late, mayhem already commited!
okantomi said:
What I can't find at this moment are the 4G stock image files.
Click to expand...
Click to collapse
That would be the ONLY thing we haven't tried. I know how to lock/unlock, flash images, etc. We've both done all of your above instructions to the letter. I've already replaced my Xoom and it's at Moto having 4G surgery, so I can't do any more of this now. John will have to try again, but as (I hope) you've already read above, the status quo techniques are not working.
Any clues about why a successfully flashed recovery image isn't working?
okantomi said:
..... If you cannot connect your Xoom via adb while your Xoom is in fastboot, it usually indicates that there is something wrong /missing from your setup.
Are you sure you have all your moto drivers installed and the proper image files in your platform tools (or tools folder) and you are actually in the right directory when opening the command window?
Please try to follow the instructions in the following
thread before you commit mayhem on your innocent Xooms.
http://forum.xda-developers.com/showthread.php?t=1249798 for setting up everything you need to ensure that adb will work and a proven method to install cwm recovery and root once you have been able to get back to a proper stock image. What I can't find at this moment are the 4G stock image files. You need the following to flash through adb/fastboot: system.img, boot.img, recovery.img, and userdata.img.from the Honeycomb 3.2.2 4G Xoom.
Commands to use:
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot reboot
Don't give up...good luck!
Click to expand...
Click to collapse
Lots of stuff to answer back here, please don't mind the bullet points....
from your guide... "Did your device not show up? Make sure that you have USB debugging enabled in Settings/Applications/Development on your Xoom."
- I have no devices connected when typing ADB devices and based on the above how can I make sure I have USB debugging enabled if I can't even get to the Android OS??? I have fastboot support that's it, I don't think its possible for me to get ADB to connect with all the partitions erased. ADB or "Android Debugging Bridge", the name implies you NEED android on the device to use it. I don't have android since the system partition was erased.
- I have two different 4g images from AceXMachine's posts. However his build posts only have system.img and boot.img. So based on your instructions I need to know what userdata.img and recovery.img I should use.
- I keep asking and I will continue until I get an answer on the next question..... I think the bootloader is screwed up. I want a new one (or at least the one that came from my 4g upgrade). Where can I find one? How do I flash it? Is this synonymous with the boot.img?
Thanks!!!
Well, your issues are way, way, way beyond the scope of my limited knowledge, lol!
Have you tried to chat with the developers on #Xoom on freenode.net? Bigrushdog and solarnz are both really nice and so is SteadyHawkin, if he's on there. Someone may be able to help.
Good luck!
Flash it back to stock moto!!!! Then start over with bringing your xoom to 3.2.2!!!! That is why you can't get anywhere! You keep killing off everything! AceXMachine did the same as you and he has his xoom back to 3.2.2. Or send it to moto and pay them to flash you back. You are not doing it right period! You have posted the same issue and people have tried helping, but you seem to want to keep going into rsd and other crap you don't need. The baseband is in the boot.img. Flash the hir66 then update to the hlk75c.
Sent from my ADR6400L using xda premium
hammer4203 said:
Flash it back to stock moto!!!! Then start over with bringing your xoom to 3.2.2!!!! That is why you can't get anywhere! You keep killing off everything! AceXMachine did the same as you and he has his xoom back to 3.2.2. Or send it to moto and pay them to flash you back. You are not doing it right period! You have posted the same issue and people have tried helping, but you seem to want to keep going into rsd and other crap you don't need. The baseband is in the boot.img. Flash the hir66 then update to the hlk75c.
Sent from my ADR6400L using xda premium
Click to expand...
Click to collapse
mmmkay... well THAT was a little terse. Don't you think returning to the HRI66 stock was the FIRST thing we tried? We downloaded the stock images from the provided links, checked the MD5, and then did this:
adb reboot bootloader
Xoom will then reboot into bootloader screen
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lock
Use volume rocker to select ok and then xoom will reboot. At this point you should be back to a factory state which includes being locked and unrooted.
Click to expand...
Click to collapse
Isn't THAT what you suggested? Yes? No?
^^Hammer....
I know this threads is really long and probably didn't read all of it (don't blame you) but a while back I explained that I did try and flash everything in Steadyhawkn' HIR66 build. I flashed the 4 images included (boot, system, userdata, recovery) I also went as far as an OEM lock at the end. This did nothing. I tried this a couple times.
Can someone lead me to the patience pool; I need a drink.

Half bricked Xoom, deleted everything - help appreciated

Hello,
again i need help I have unlocked the bootloader on my Xoom, the i have flashed TWRP and downloaded a Rom and the Gapps. I copied the gapps onto the device and followed instructions which came with the rom. I was instructed to wipe "system" too which i did.
Of course that deleted the downloaded rom and gapps too. Now i have TWRP and was excited to mount USB storage and just copy over again the rom and gapps but unfortunately there is no mount as USB option.
What and how is the smartest way to go about it? I wanted to sideload over ADB but the device is not found. I have really tried everythin in my knowledge, hope someone can help
cheers
Come on guys, really need help here. My kids are killing me for the damn thing
I have same problem.......it's an issue of twrp !
Have you tried a micro sd card? (copy the rom and gapps there from a pc then put it in the Xoom, etc...)
Worst case, you should be able to grab the stock images http://forum.xda-developers.com/wiki/Motorola_Xoom and fastboot flash the device back to stock.
Have the same problem
dosada, could you solve the problem?
airesch, I tried to mount sd card but it is impossible. How can I return to stock without ADB because computer is not recognized?
hbtwender said:
dosada, could you solve the problem?
airesch, I tried to mount sd card but it is impossible. How can I return to stock without ADB because computer is not recognized?
Click to expand...
Click to collapse
Stock flash doesnt require adb, just fastboot mode. You may need to still install a driver, but if you can boot into recovery then the xoom should also be able to boot into fastboot mode and be recognized by a pc. If the instructions on the link I gave arent enough, I will see if I cant find something tomorrow when I am on a pc.
Sent from my GT-N8013 using XDA Premium 4 mobile app
hbtwender said:
dosada, could you solve the problem?
airesch, I tried to mount sd card but it is impossible. How can I return to stock without ADB because computer is not recognized?
Click to expand...
Click to collapse
NOTE: This WILL erase everything remaining on the device. In the case of the above, I don't know that you have much choice, just be forewarned.
Lord AIO toolkit has all the tools you need (look at the second post if you need the Windows driver.) Extract both the stock image zip and the toolkit (unless you have the sdk, in which case as long as you can find fastboot.exe you should be fine,) to somewhere convenient. Install the windows driver if you never have before and reboot your pc.
1. Boot your Xoom in fastboot mode: Power+Vol+ until it says: Starting Fastboot protocol support (you may need to tap the Vol+ instead of holding it the whole time, my Xoom has always been a bit picky about the buttons.)
2. Connect the usb to the pc
3. In a Command prompt window, go into the extracted version of the toolkit above (or if you have the sdk, just go to where you have fastboot.exe from it)
4. Run the following commands (replacing the files at the end with the full extract path from your stock image zip extract)
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
"fastboot reboot" if you want to stay unlocked or "fastboot oem lock" if you want to re-lock and follow the prompts. The Xoom will get OTA updates even if it's unlocked, so there should be no reason to re-lock unless you need to send it in for service.
The driver isn't what I used to use, but it *should* work, and the instructions should be correct as far as I can remember. As long as you don't flash the wrong image to the wrong place/run out of power during flashing/disconnect during a flash then none of this should permanently damage the hardware and should get you a working device again. It's just that it's been so long since I have personally done any of this that I have forgotten more than I ever knew .
Solved
airesch said:
NOTE: This WILL erase everything remaining on the device. In the case of the above, I don't know that you have much choice, just be forewarned.
Lord AIO toolkit has all the tools you need (look at the second post if you need the Windows driver.) Extract both the stock image zip and the toolkit (unless you have the sdk, in which case as long as you can find fastboot.exe you should be fine,) to somewhere convenient. Install the windows driver if you never have before and reboot your pc.
1. Boot your Xoom in fastboot mode: Power+Vol+ until it says: Starting Fastboot protocol support (you may need to tap the Vol+ instead of holding it the whole time, my Xoom has always been a bit picky about the buttons.)
2. Connect the usb to the pc
3. In a Command prompt window, go into the extracted version of the toolkit above (or if you have the sdk, just go to where you have fastboot.exe from it)
4. Run the following commands (replacing the files at the end with the full extract path from your stock image zip extract)
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
"fastboot reboot" if you want to stay unlocked or "fastboot oem lock" if you want to re-lock and follow the prompts. The Xoom will get OTA updates even if it's unlocked, so there should be no reason to re-lock unless you need to send it in for service.
The driver isn't what I used to use, but it *should* work, and the instructions should be correct as far as I can remember. As long as you don't flash the wrong image to the wrong place/run out of power during flashing/disconnect during a flash then none of this should permanently damage the hardware and should get you a working device again. It's just that it's been so long since I have personally done any of this that I have forgotten more than I ever knew .
Click to expand...
Click to collapse
Hey airesch, thank you for your support. I couldn´t follow yours suggestion because my xoom was not recognizing the PC or MAC. However I discovered that my sdcard was broken. When I´ve tried a new one with ZIP files inside it works perfectcly and I could return to my old room doing flah in the recovery mode of TWRP2.2.
It is important to note that my Xoom did not find .IMG files inside the card but only ZIP ones. Any way it worked perfectly and I hope this solution will serve to other in solving his/her problems.
Many thanks
Well, that works too, and that was closer to what I originally suggested (tho I didn't expect you had a bad sd card.)
And yes, recoveries generally don't support IMG files directly, you need to have a specially crafted zip to flash those in. IMG files directly are for fastboot/pc tool flashing.
Congrats on fixing it.

Flashed stock recovery and thought I soft bricked my shield tablet.

First I'll give credit where it is due. From two threads on this site is where I got help with this issue:
I followed THIS guys steps for manually erasing and got the recovery images and lots of other useful information from HERE. Thank you guys very much!
OK, so, hopefully I can help someone with my little story as well. I was having issues with apps and programs crashing on me with lollipop and the new marshmallow update. The tablet just wasn't working properly and moving slow. I even had the SD card holding all my apps and larger files so I didn't overload the internal storage. So, I decided I wanted to flash back to factory/stock recovery and go from there. I did this using THIS method. I flashed via the "flash-all.bat" file (the command in fastboot is the same as the file name). I should note that there was one instance that failed during the install (I did try it again and got the same failure). Said something about “did you mean you wanted to flash this partition” or something, then showed it failed. After flashing I hit continue on the bootloader screen of the tablet and it said it was "cold booting." After about 5 minutes or so it started to boot but never made it past the NVidia screen. I tried wiping the phone with factory reset, wiping the cache, etc. and then re-flashing the recovery (again with the .bat file). I tried flashing TWRP but it didn't install apparently, because it still went to factory recovery. I even re-locked and then unlocked my bootloader to see if that would set everything straight. Nothing seemed to work. I knew I would eventually find a solution though so I kept looking. Stumbled on some other people that had the same issues but no solution (hope those people got it figured out). So here's what I did after some more research:
First, if you're in this situation and you did factory reset to try and resolve the problem, you may feel like you can no longer communicate with the device via fastboot/adb, but as long as you have the usb drive and your SDK tools installed (I used CodeWorks for Android all-in-one program) that shouldn't be a problem. You'll just have to be in the bootloader on the tablet.
-If for some reason you deleted or uninstalled your drivers and tools you'll have to download them again and then, the computer should still be able to communicate with the tablet. In the device manager under portable devices it will still show up as Module something or other. So the computer still sees the device but doesn't fully recognize it yet. Don't worry, this should still work! Just make sure you that fastboot is seeing the device by inputting "fastboot devices" in the command window and a 14 digit serial number should pop up. If it just says "list of devices" or there's nothing then you wont be communicating with the tablet.
Your device should be connected to your computer and started in bootloader mode. On your computer you should have the command prompt for adb/fastboot open. I just go to the folder where the .exe files are located and hold shift and right click in the white space of the folder, then select "open command window here."
From here follow the erase steps: stolen from manigault! :highfive:
fastboot erase system
fastboot erase userdata
fastboot erase boot
fastboot erase recovery
fastboot erase cache
Then flash your recovery MANUALLY:
fastboot flash recovery {dir}/recovery.img
fastboot flash boot {dir}/boot.img
fastboot flash system {dir}/system.img
fastboot flash userdata {dir}/userdata.img
fastboot flash staging {dir}/blob
fastboot flash dtb {dir}/tegra124-tn8-p1761-1270-a04-e-battery.dtb
You can download whatever recovery version you wish. I downloaded 2.2.2 because that's what my device came with out of the box on Christmas 2014. It will more then likely be a .zip file. To make this whole process a little easier simply extract the files in the .zip file where the adb.exe and fastboot.exe files are located (folder should be named platform-tools) and you can completely eliminate typing the whole directory before the file name. ***After your done flashing everything you can go back and delete those files if you want. Just double check that you're deleting the right files by looking at the original zip file. Not sure if it makes a difference but I deleted them anyway.
For example the commands in fastboot will look like this exactly :
(after extracting recovery files into platform-tools folder)
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot flash staging blob
fastboot flash dtb tegra124-tn8-p1761-1270-a04-e-battery.dtb
Note: Do NOT use the flash-all.bat command as this doesn't seem to work for this situation. Do it manually like shown above. And let each individual process complete before attempting to input another command.
After this step I didn't select continue on the bootloader. You can either select reboot or simply input "fastboot reboot" into the command window. It may take about 5 minutes to start installing everything but just be patient, it should start. Sometimes with these things you have to do things twice before it works. If for some reason it doesn't work the first time then start from the beginning and try it again. It took two times for me, but that's because I installed system.img twice and was getting double screen. Newb error... and I was a bit inebriated last night when I did this.
Hope this helps someone!
Thanks again to manigault and MidgetMob!
NVIDIA download files HERE!
i think i done the same thing
but the problem i now have is i cnt get tablet into fastboot on pc. i can load fastboot on tablet with power and volume down , but the tablet only shows as MTP device in device manager. i have downloaded drivers from nvidia and no matter what i try i cant install them i have been through all instructions but scince it went to mtp device i cant get device showing in adb. The only way i can get device showing in adb on pc ist to select apply update from adb ! but none of these commands listed in your post will work because its in sideload. is there anyway i cn reset , flash custom rom ect bu using commands while device is in adb sideload.
all i get is now send the package you want to apply to the device with "adb sideload <filename>".....
if you could shed any light on this it would be much appreciated , thanks , lester
did you update official android 6.0 before? then, not working stock recovery, stock boot...
If you can enter bootloader mode, download unofficial twrp 3.0.0.0 (here http://forum.xda-developers.com/shield-tablet/development/wip-twrp-2-8-0-1-unofficial-t2877117) and flash it.
i have a working boot.img file on marshmallow if you want.. please reply.
Sorry for the late response! I have no clue how you got into sideload??? Are you talking about through the recovery on your device? You're not able to get adb/ fastboot to recognize the device, right? It doesn't matter how you get the tablet into the bootloader. Whenever you have the phone in the bootloader then you'll use the fastboot command to "talk to" the device; i.e. "fastboot devices" without the quotes. That command should show your device if it shows as an MTP device whenever you open your "device manager" in windows. That's the same exact situation I was in. Download the codeworks from nvidia like I linked above. Hopefully then you should be able to recognize your device through the bootloader. If not DM me and I'll try to help you.
I'm having the exact problem as Lester. Tablet boots into bootloader but won't connect to computer. So I go into recovery mode and nothing works except apply update from adb. Which brings up the side load message that Lester quoted. And bootloader is showing "device=locked". I am attempting to fix this tablet for a friend that messed it up trying to flash a custom rom. Problem is he had no idea what he was doing and I'm not exactly sure what he did. I do however have a lot of experience with rooted android devices and flashing so any help would be GREATLY APPRECIATED!
---------- Post added at 05:59 PM ---------- Previous post was at 05:55 PM ----------
Also, I've already tried flashing stock rom back onto the tablet by applying update from sd card function in the recovery but when I try to do that the tablet for some reason can't mount the sd card.
rom fiend said:
Tablet boots into bootloader but won't connect to computer.
Click to expand...
Click to collapse
If you've got the device in bootloader then you need to use fastboot, not adb. Try the command 'fastboot devices' and see if the device id is listed. If so then grab a factory image, unzip it and use fastboot to flash the .img files using the commands 'fastboot flash system system.img'. Just make sure to match the partition names to the files.
Hello i have similar issue except when i try flash something i get this error ''remote: file write failed''
and i have to reboot into fastboot to get it flashing fully
but even though i managed to flash everything by rebooting when i boot system nothing shows up, i can just see the back light coming on and turning off after a while
Please help

How to update early TWRP withoput adb and spooling rom problem

I'd like to know how to update my TWRP from v 2.4.4.0 to a later version. This version doesn't seem to allow flashing of an img file on external sd card. I have tried without success on 2 computers to get windows to recognise this android, so I'm hoping there is another way. Eventually I'd like to install Katkiss,Gapps and SU on this android. At present it has no rom.
Secondly, I tried to install Cromi X and all goes well up until I reboot and it continually spools on the opening screen so I don't know what that is about but hoping with a later TWRP I may be able to set the partitioning better which may or may not be part of the cause.
Reboot recovery twrp.
Go to install.
Click on install image.
Search downloaded recovery.
Select recovery.
And install.
Done
sent from moto g2014 with cm13
---------- Post added at 03:12 AM ---------- Previous post was at 03:11 AM ----------
Ot use flashify app.
It requires root.
sent from moto g2014 with cm13
There is no 'install image' on v2.4.4.0 and that version of TWRP does not seem to recognise .img files on the external sd card. On a later version of TWRP your solution would work.
If you want to flash the recovery in recovery it has to be inside a flashable zip (except for the latest versions).
You can use the Kang TWRP 2.8.x from post 2 here: http://forum.xda-developers.com/tra...overy-kang-twrp-tf700t-2-8-x-xarea51-t3049395
You can flash Katkiss with it no problem, and it supports the dock SD which the official TWRP does not do.
Somewhere there's also a thread where some dude keeps posting TWRP 3.x in a flashable zip, but I can't think of where right now.
That CROMi-X does not boot can have a number of reasons:
You did not format data before flashing the rom
You are on an outdated bootloader
Something is physically wrong with your emmc.
Your problem to get the tablet recognized in Windows is almost certainly a driver problem an you should get that fixed. At minimum it sucks not to have fastboot access to the tablet. And it easily could be lethal. For the tablet - not for you
Could also be a problem with a cheap knock-off replacement USB cable. If you are not using the original Asus cable that's worth investigating. And if you are using the original it may become worn. Mine is starting to allow a connection only in certain positions... Age....
Make sure the device drivers are installed and try the Google Universal Naked drivers. Minimal ADB and fastboot is an excellent tool that shimp208 still keeps current after all this time, and if none of those work try the 15 second adb installer if you are on Win 7 or earlier (just google it).
Hello my old friend. Well I have finally managed to get an adb connection and am going over to old posts of previous help you gave me with this device. Although the device is now recognised I can't get any commands to work e.g. fastboot devices simply returns me to the c:/adb prompt and adb reboot bootloader just takes the flashing underline symbol to the next line and nothing happens. I have hope that I will be able to get this working OK now I have adb access. How do I know if I am on an outdated bootloader? thanks
plato2 said:
Hello my old friend. Well I have finally managed to get an adb connection and am going over to old posts of previous help you gave me with this device. Although the device is now recognised I can't get any commands to work e.g. fastboot devices simply returns me to the c:/adb prompt and adb reboot bootloader just takes the flashing underline symbol to the next line and nothing happens. I have hope that I will be able to get this working OK now I have adb access. How do I know if I am on an outdated bootloader? thanks
Click to expand...
Click to collapse
This is not the same device you helped me with earlier...it now purrs beautifully.... this is a new challenge.
plato2 said:
Hello my old friend. Well I have finally managed to get an adb connection and am going over to old posts of previous help you gave me with this device. Although the device is now recognised I can't get any commands to work e.g. fastboot devices simply returns me to the c:/adb prompt and adb reboot bootloader just takes the flashing underline symbol to the next line and nothing happens. I have hope that I will be able to get this working OK now I have adb access. How do I know if I am on an outdated bootloader? thanks
Click to expand...
Click to collapse
Thought you looked familiar..... :cyclops:
Time to re-read this I think http://forum.xda-developers.com/showthread.php?t=2688891
Boot into the bootloader and read the small script. The last bootloader for this tablet is 10.6.1.14.10.
Yes, that is the bootloader I have. Typing fastboot devices takes me back to the/adb prompt and then typing
fastboot -i 0x0B05 flash recovery <name-of-file>
I get a <waiting for device> but nothing happens.
plato2 said:
Yes, that is the bootloader I have. Typing fastboot devices takes me back to the/adb prompt and then typing
fastboot -i 0x0B05 flash recovery <name-of-file>
I get a <waiting for device> but nothing happens.
Click to expand...
Click to collapse
Yeah, so you have a driver problem. This is nothing you have to do now. Just download the flashable zip of Kang TWRP and flash it in your current recovery.
But when you have some time to kill open Device Manager and connect and disconnect the cable to the tablet. It should give you SOME change in device manager. If it doesn't, reboot both tablet and PC and try again.
Then try a different cable.
Still nothing? This could take longer. Driver problems suck in Windows....
So - you got yourself another TF700? Had just too much fun getting Katkiss to work on the last one, eh?
berndblb said:
Yeah, so you have a driver problem. This is nothing you have to do now. Just download the flashable zip of Kang TWRP and flash it in your current recovery.
But when you have some time to kill open Device Manager and connect and disconnect the cable to the tablet. It should give you SOME change in device manager. If it doesn't, reboot both tablet and PC and try again.
Then try a different cable.
Still nothing? This could take longer. Driver problems suck in Windows....
So - you got yourself another TF700? Had just too much fun getting Katkiss to work on the last one, eh?
Click to expand...
Click to collapse
Just download the flashable zip of Kand TWRP and flash it in your current recovery.
I don't know what you mean here.... how do I 'flash it in my current recovery' I have v 2.4.4.0 and it doesn't see img files on external sd.
plato2 said:
Just download the flashable zip of Kand TWRP and flash it in your current recovery.
I don't know what you mean here.... how do I 'flash it in my current recovery' I have v 2.4.4.0 and it doesn't see img files on external sd.
Click to expand...
Click to collapse
If you downloaded from the second link, the flashable zip, you will see a zip file, not an img file.
Just hit Install, select the zip and swipe the button. Reboot when the flash is finished
All good so far. Up to the wiping data bit before converting to f2fs but this guide is missing, not sure why. I recall it was only a short set of instructions: Once that is done follow this guide to convert internal data to f2fs: http://forum.xda-developers.com/tran...p-2-8-t3073471. Can you recall that part? thanks
Got it, found it or rather another post of yours here: tf700/help/how-to-update-twrp-withoput-adb-t3437702/post68163144#post68163144 so did that and successfully installed Katkis, Gapps pico and SU....another beautiful TF700T purring...many thanks yet again...

Bootloop when starting android or RCK

I tried to flash a custom rom (KatKiss), and it seems that I did something wrong along the way because the tablet is stuck in a bootloop.
So I rebooted my tablet and access the bootloader ("fastboot devices" recognize my device) and try to go to the recovery (with the TWRP splash screen, "adb devices" recognize my device). Unfortunately after 20 seconds on the splash screen, the tablet reboots (tries to load my katkiss android but bootloop everytime).
Bootloader : 10.6.1.14.10
TWRP : 3.1.1.0
Since the fastboot recognize my device while in bootloader, I think that I should try to flash twrp since it seems to be corrupted somehow.
Every time I flashed a rom nothing went wrong but now that I have a problem I don't want to worsen it and would like some help on the issue.
Did you flash the rom in your current TWRP?
Something is off... Did you possibly flash the TF201 rom version??
Whatever you do - do not use Wipe Data from the bootloader!!
Reflash TWRP, format data, then reflash the rom
And report in more detail what you did
Sent from my Nexus 5X using Tapatalk
Thank you for the fast reply!
I did flash the rom with my current TWRP and only downloaded the rom version for the TF700. Below is what I tried from your suggestion:
I check that my device is recognized:
fastboot device
So I tried flashing TWRP:
fastboot flash recovery twrp-3.1.1-0-tf700t
After it succeeded, I reboot the tablet:
fastboot reboot
And as a result... nothing changes, I don't know if I should try with older version of TWRP. Seems like I only have access to the tablet with the fastboot.
That is very strange indeed. Yes, try a 3.0.2 version of TWRP and see if that works.
If not, I would flash the Asus stock blob in fastboot and start from scratch....
Sent from my TF700T using Tapatalk
Kromlech said:
And as a result... nothing changes, I don't know if I should try with older version of TWRP. Seems like I only have access to the tablet with the fastboot.
Click to expand...
Click to collapse
Not sure if this will help but I had a reboot problem with trying to load into TWRP. I posted my solution into a different thread but will toss it out here..
I just had this problem with a Transformer 201Prime. The cycle went something like this..
Power on.... get ASUS logo in middle, Tegra3 logo on lower right, and bootloader unlocked in upper left....
then a buzz... then reboot.....
So I would try the power button and hold the volume down... that got me into the bootloader but when I hit the volume up button it would give me the TWRP logo... then buzz and reboot...
After much monkeying around... I realized I would have to re install everything. Fortunately I had the original NVFLASH bloob files backed up so I was able to get into the NVFLASH commands.
Here is a great tutorial, it is for the 201 so be sure to download the correct files but the steps are basically the same.
https://forum.xda-developers.com/tra...prime-t3486237
The other problems is I had to download a bloob tool to 'unpack' the necessary .bin and .ebt files that are mentioned in the commands... I used the following link to download the tool.
https://github.com/AndroidRoot/BlobTools
I hope this helps shake loose a few answers.
Once I was able to get a working recovery I could flash an updated ROM. (KatKiss is my current favorite)
I tried to flash version 3.0.2 of TWRP and the problem is still the same.
@Unidave199 the link you put in your post points to a post that doesn't seems to exist anymore, has it been moved?
@berndblb how do I do for flashing a rom with the fastboot? any stock rom to recommend?
double post
Kromlech said:
I tried to flash version 3.0.2 of TWRP and the problem is still the same.
@Unidave199 the link you put in your post points to a post that doesn't seems to exist anymore, has it been moved?
@berndblb how do I do for flashing a rom with the fastboot? any stock rom to recommend?
Click to expand...
Click to collapse
Unidave's link would only help you if you generated your device specific nvflash blobs when the tablet was still functioning. Did you:
flash a specifically modded recovery - flash the moddded bootloader, use wheelie to generate and save your blobs, return everything to factory specs?
I highly doubt it since you would have mentioned...
To flash the stock blob in fastboot you download the Asus firmware from here: https://www.asus.com/my/support/Download/28/1/0/11/29/8/
Extract the zip twice until you see a blob and a meta-inf file.
Move the blob into your fastboot folder, discard the rest of the file
Issue these commands one by one, letting each one finish before starting the next. Some will finish quick, others may take up to 3 minutes:
Code:
fastboot erase system
fastboot erase boot
fastboot erase recovery
fastboot erase misc
fastboot erase cache
fastboot erase userdata
fastboot flash system blob
fastboot reboot
The first boot will take a while, but that should put you back on a stock JB 4.2 system.
Trash all the files you used in your last attempt and redownload the rom, gapps and supersu
Fastboot flash TWRP
Reboot
Format /data in TWRP (this will take up to 1 hour - let it finish!!), then convert /data to f2fs
Flash the rom, gapps, supersu
If you flash Nougatella remember that you have to turn on wifi right after the language selection during setup or Google framework will crash.
Spend the end of the day doing it, but it worked flawlessly! Thanks a lot @berndblb, now I can use my tablet again!
Kromlech said:
I tried to flash version 3.0.2 of TWRP and the problem is still the same.
@Unidave199 the link you put in your post points to a post that doesn't seems to exist anymore, has it been moved?
@berndblb how do I do for flashing a rom with the fastboot? any stock rom to recommend?
Click to expand...
Click to collapse
My apologies for the problem with my link, looks like you resolved it, but wanted to post a correct working link to take someone else into the full conversation and context...
https://forum.xda-developers.com/showpost.php?p=71150385
berndblb said:
To flash the stock blob in fastboot you download the Asus firmware from here: https://www.asus.com/support/Download/28/1/0/11/fq2B3oq64av1O95/8/
Click to expand...
Click to collapse
Broken link ? that post isn't very old, either. ??
berndblb said:
Did you flash the rom in your current TWRP?
Something is off... Did you possibly flash the TF201 rom version??
Whatever you do - do not use Wipe Data from the bootloader!!
Reflash TWRP, format data, then reflash the rom
And report in more detail what you did
Click to expand...
Click to collapse
I did wipe data from bootloader, now I can't go to bootloader. How to revive my tf700t?
Please help
Thanks
ketulharini said:
I did wipe data from bootloader, now I can't go to bootloader. How to revive my tf700t?
Please help
Thanks
Click to expand...
Click to collapse
You'll need to refer to post #8. However, the link to the tf700 stock blob is broken. You'll have to search Google for one. They're out there, but it does require digging .Make sure the one you get is for the proper SKU of your tablet (US, Worldwide, JP, etc.). I completed the process myself maybe a month ago. Good luck!
monogwai said:
You'll need to refer to post #8. However, the link to the tf700 stock blob is broken. You'll have to search Google for one. They're out there, but it does require digging .Make sure the one you get is for the proper SKU of your tablet (US, Worldwide, JP, etc.). I completed the process myself maybe a month ago. Good luck!
Click to expand...
Click to collapse
I got the stock blob ww version.
Just tab doesn't stay on fastboot mode keeps rebooting.
Don't know how to do it.
Is it possible to get stable fastboot screen some how? Or just flash the bootloader to get fastboot working.
May be this noob question but I don't know how to do.
Thanks
ketulharini said:
I got the stock blob ww version.
Just tab doesn't stay on fastboot mode keeps rebooting.
Don't know how to do it.
Is it possible to get stable fastboot screen some how? Or just flash the bootloader to get fastboot working.
May be this noob question but I don't know how to do.
Thanks
Click to expand...
Click to collapse
There is one more piece to the puzzle- hold short while I dig it up.
Here it is: http://www.transformerforums.com/forum/transformer-pad-infinity-tf700-tegra-3-development/46302-guide-help-my-transformer-tf700-boots-only-recovery.html
Do be *very* careful. Read thrice, do it once. Especially if you're feeling noob-y.
monogwai said:
There is one more piece to the puzzle- hold short while I dig it up.
Here it is: http://www.transformerforums.com/fo...my-transformer-tf700-boots-only-recovery.html
Do be *very* careful. Read thrice, do it once. Especially if you're feeling noob-y.
Click to expand...
Click to collapse
Thanks for this information.
One more question,
My tab is keep bootlooping neither it stays on twrp nor bootloader.
It has blue screen of recovery that is twrp after 5 to 10 seconds it boots again.
Is this enough time to execute the commands while it is on blue screen?
Thanks
ketulharini said:
Thanks for this information.
One more question,
My tab is keep bootlooping neither it stays on twrp nor bootloader.
It has blue screen of recovery that is twrp after 5 to 10 seconds it boots again.
Is this enough time to execute the commands while it is on blue screen?
Thanks
Click to expand...
Click to collapse
Well, that depends on several things. What I did was write a short little DOS batch file to process all the fastboot commands. So, with your batch file ready, open your command prompt (change directory to your adb/fastboot directory if it's not set in system's 'path=' environment variable) and have the batch command typed in, ready to hit enter. Tether to pc via USB, proceed to boot to adb. The second you hear windows make the USB notification sound, slap that enter key. It should just process and reset the tab and get you out of TWRP bootloop. Which is just step one.
If you aren't familiar with writing bat files for DOS, let me know.
monogwai said:
Well, that depends on several things. What I did was write a short little DOS batch file to process all the fastboot commands. So, with your batch file ready, open your command prompt (change directory to your adb/fastboot directory if it's not set in system's 'path=' environment variable) and have the batch command typed in, ready to hit enter. Tether to pc via USB, proceed to boot to adb. The second you hear windows make the USB notification sound, slap that enter key. It should just process and reset the tab and get you out of TWRP bootloop. Which is just step one.
If you aren't familiar with writing bat files for DOS, let me know.
Click to expand...
Click to collapse
You mean a batch file with the adb commands right? Once he can boot into fastboot he has all the time in the world to run the commands for the buster99 (description in post #8). Depending on what situation he came from before, it might be a good idea to start all fresh...
The tricky thing are the adb push bootit.ko and the insmod command. Those have to be timed just right to get executed, so a batch file might come in handy. Both commands only take a second or two to execute, so your window of 5 seconds could work. Maybe not in the same session, but they should work.
If the insmod command does not kick the tablet into the bootloader, there are 2 possible reasoons:
adb push bootit.ko did not work
the insmod command did not work
To find out if the file push worked you could add a simple list command for the contents of /sdcard/. Again - tricky, I know since you still are working with the 5 sec window, but that's what you got to work with...
That would look something like in the attached picture. So after pushing bootit.ko you issue:
Code:
adb shell ls /sdcard/
Try it with the batch file, try it with single commands... Don't give up. As long as you have any kind of adb access you should be able to solve it.
Good luck!
berndblb said:
You mean a batch file with the adb commands right?
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Yeah.
berndblb said:
Once he can boot into fastboot he has all the time in the world to run the commands for the buster99 (description in post #8).
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Again, mistake in my terminology. What I meant to say is, batch commands for the process involving the Bootit.ko- the adb portion.
Thanks for clearing that up.
@ketulharini
Anyhow, I was unable to get the process to take without having automated *every last step* of the process. Literally open the cmd window, have the command for your batch file typed in ready to go, and plug in. Hear the noise from windows and slap enter asap. That's the only way I could get it in time, and I'm a ridiculously fast typist.
monogwai said:
Yeah.
Again, mistake in my terminology. What I meant to say is, batch commands for the process involving the Bootit.ko- the adb portion.
Thanks for clearing that up.
@ketulharini
Anyhow, I was unable to get the process to take without having automated *every last step* of the process. Literally open the cmd window, have the command for your batch file typed in ready to go, and plug in. Hear the noise from windows and slap enter asap. That's the only way I could get it in time, and I'm a ridiculously fast typist.
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Care to share the batch file?

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