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Tried to update to CM 11 / 4.4 KitKat and got "unrecoverable bootloader error"

Tried to update to CM 11 / 4.4 KitKat and got "unrecoverable bootloader error"
So I messed up big time. Trying to update to the new unofficial 4.4 OmniRom and had to update TWRP from 2.5.0.0 to the latest 2.6.3.1 in order to flash the new 4.4 ROM but it kept giving me an 'set_metadata_recursive'. So I used the version provided and then used Flashify app on Google play (mistake) to flash it (it said that it installed successfully). Then when I reseted to recovery it got corrupted. So I thought I installed at the wrong place and installed as a zip, recovery and IMG. (Bigger mistake). Now it won't load at all on any OS and boot loader and recovery are corrupted.
Can some one help me? Please o)v_v)o

ANDROiD_eKa said:
So I messed up big time. Trying to update to the new unofficial 4.4 OmniRom and had to update TWRP from 2.5.0.0 to the latest 2.6.3.1 in order to flash the new 4.4 ROM but it kept giving me an 'set_metadata_recursive'. So I used the version provided and then used Flashify app on Google play (mistake) to flash it (it said that it installed successfully). Then when I reseted to recovery it got corrupted. So I thought I installed at the wrong place and installed as a zip, recovery and IMG. (Bigger mistake). Now it won't load at all on any OS and boot loader and recovery are corrupted.
Can some one help me? Please o)v_v)o
Click to expand...
Click to collapse
You can read this to see if it helps..good luck..:fingers-crossed:
http://forum.xda-developers.com/showthread.php?t=2528313

ANDROiD_eKa said:
So I messed up big time. Trying to update to the new unofficial 4.4 OmniRom and had to update TWRP from 2.5.0.0 to the latest 2.6.3.1 in order to flash the new 4.4 ROM but it kept giving me an 'set_metadata_recursive'. So I used the version provided and then used Flashify app on Google play (mistake) to flash it (it said that it installed successfully). Then when I reseted to recovery it got corrupted. So I thought I installed at the wrong place and installed as a zip, recovery and IMG. (Bigger mistake). Now it won't load at all on any OS and boot loader and recovery are corrupted.
Can some one help me? Please o)v_v)o
Click to expand...
Click to collapse
Sorry, but after reading your post 4 times I still have no idea what you actually did.....
If you still have access in ADB (since you can't access the bootloader??) the link LMK gave you may save your bacon.
If you don't have any kind of access: ADB or fastboot and you do not have nvFlash blobs - sorry, you bricked.

Can I access fastboot when I get the menu at RCK / Android / Wipe? Because if I click con any of these its says that bootloader is corrupted.
What's the Command to fix TWRP using a computer / or other Android device?

ANDROiD_eKa said:
Can I access fastboot when I get the menu at RCK / Android / Wipe?
Click to expand...
Click to collapse
Does it say something about fastboot in the upper left corner?
ANDROiD_eKa said:
What's the Command to fix TWRP using a computer / or other Android device?
Click to expand...
Click to collapse
fastboot flash recovery twrp.img
(or whatever name your TWRP blob has)

_that said:
Does it say something about fastboot in the upper left corner?
fastboot flash recovery twrp.img
(or whatever name your TWRP blob has)
Click to expand...
Click to collapse
Thanks _that for the advice...:good: You are the expert in this area... I am done with my job to bring you in here for helps..haha...

_that said:
Does it say something about fastboot in the upper left corner?
fastboot flash recovery twrp.img
(or whatever name your TWRP blob has)
Click to expand...
Click to collapse
Yes it says
Code:
Starting Fastboot USB download protocol

Ok flashed TWRP via fastboot but device freezes?
Code:
C:\Documents and Settings\HP_Administrator.CEREBRO>fastboot -i 0x0B05 flash reco
very twrp.blob
sending 'recovery' (6106 KB)...
OKAY [ 2.563s]
writing 'recovery'...
OKAY [ 2.453s]
finished. total time: 5.016s
It still won't let me boot to TWRP saying an "unrecoverable bootloader error" occured. Is there something I can do?

ANDROiD_eKa said:
Ok flashed TWRP via fastboot but device freezes?
Code:
C:\Documents and Settings\HP_Administrator.CEREBRO>fastboot -i 0x0B05 flash reco
very twrp.blob
sending 'recovery' (6106 KB)...
OKAY [ 2.563s]
writing 'recovery'...
OKAY [ 2.453s]
finished. total time: 5.016s
It still won't let me boot to TWRP saying an "unrecoverable bootloader error" occured. Is there something I can do?
Click to expand...
Click to collapse
You can use the link on my previous reply and read post #3 by _that to clear your misc.. You need to use "dd=" command erase your mmcblk0p3 partition. Please be carefull when you use it and make sure you erase the right partition. Anything after "of=" is you write to....
Please ask more question with _that before execute that command...Good luck..:fingers-crossed:

LetMeKnow said:
You can use the link on my previous reply and read post #3 by _that to clear your misc.. You need to use "dd=" command erase your mmcblk0p3 partition. Please be carefull when you use it and make sure you erase the right partition. Anything after "of=" is you write to....
Please ask more question with _that before execute that command...Good luck..:fingers-crossed:
Click to expand...
Click to collapse
I think this may be different. Clearing the misc partition solved the problem of force booting into recovery.
Here he can't get into recovery... Not looking good.....

berndblb said:
I think this may be different. Clearing the misc partition solved the problem of force booting into recovery.
Here he can't get into recovery... Not looking good.....
Click to expand...
Click to collapse
The fastboot write is successfull but the recovery is not updating.... You and _that may have the answer..

LetMeKnow said:
The fastboot write is successfull but the recovery is not updating.... You and _that may have the answer..
Click to expand...
Click to collapse
Pff - just yesterday I used fastboot to push TWRP 2.6.3.1 and it said successful. TWRP still shows version 2.6.1. - so what do I know???

berndblb said:
Pff - just yesterday I used fastboot to push TWRP 2.6.3.1 and it said successful. TWRP still shows version 2.6.1. - so what do I know???
Click to expand...
Click to collapse
I think that his/her bootloader is still partly function because the fastboot is running.. I don't want to give any advice unless I know for sure that it works. If someone have a better knowledge on the bootloader and recovery, it can be up and running again, I hope...

LetMeKnow said:
I think that his/her bootloader is still partly function because the fastboot is running.. I don't want to give any advice unless I know for sure that it works. If someone have a better knowledge on the bootloader and recovery, it can be up and running again, I hope...
Click to expand...
Click to collapse
As long as there is fastboot, there is hope
http://lmgtfy.com/?q=fastboot+boot+image

berndblb said:
As long as there is fastboot, there is hope
http://lmgtfy.com/?q=fastboot+boot+image
Click to expand...
Click to collapse
Hey guys thank you for your help. I had learned that I encountered a softbrick. I got my tabby fix reading ]Unrecoverable bootloader error(0x00000000) Which led me to Softbrick - possible solution for you
Followed these steps...
buster99 said:
My solution
I have the same on my TF300t and A700 - but it seems i just managed to get my TF300t back
i tried all fastboot (reflashing recovery, boot, system etc) no dice - especially since writing system was done after 3 secs all the time.
Here how i restored my TF300T JB
download your appropriate lates firmware from Asus (WW, US etc.) and extract the zip twice so you have your blob file
install your device drivers if needed (i used Google SDK ones) (and as a Tip Win8 sucks for Fastboot stuff so try to get Win7 Vista XP for this)
Reset your device with a paperclip/needle (about 2 cm down of your sdcard slot) and hold vol-down to enter fastboot
(the folowing i did at least 10 times already but didn't erase misc)
fastboot erase system
fastboot erase recovery
fastboot erase userdata
fastboot erase boot
fastboot erase misc
fastboot erase cache
fastboot -i 0x0B05 flash system c:\adb\TF300t\blob (this is my path - your's may vary depending where you stored your blob) ((also this was the first time i saw the loading bar while flashing)*
fastboot -i 0x0B05 reboot
* it also took a lot longer, as it should:
C:\>fastboot -i 0x0B05 flash system c:\adb\TF300t\blob
erasing 'system'...
OKAY [ 1.695s]
sending 'system' (800935 KB)...
OKAY [133.121s]
writing 'system'...
OKAY [153.973s]
finished. total time: 288.789s
im now setting my tab up to get back to CM (which initially caused this sh1theap due to autoupdate error, same as my A700 got bricked )
hope i could help you out!
Click to expand...
Click to collapse
Although I admit I had to these steps several times as it initially wouldn't somehow it wiped out that error. After I had fix that bootloader error I used fastboot and installed TWRP 2.6.3.1 and now life can continue.
I also followed steps right on getting CM11 to work by using CWM Touch this time to install and it looks jelly. ?! Love these 4.4 KitKat emoticons, thanks again for your help and interest in me ?

ANDROiD_eKa said:
Hey guys thank you for your help. I had learned that I encountered a softbrick. I got my tabby fix reading ]Unrecoverable bootloader error(0x00000000) Which led me to Softbrick - possible solution for you
Followed these steps...
Although I admit I had to these steps several times as it initially wouldn't somehow it wiped out that error. After I had fix that bootloader error I used fastboot and installed TWRP 2.6.3.1 and now life can continue.
I also followed steps right on getting CM11 to work by using CWM Touch this time to install and it looks jelly. ?! Love these 4.4 KitKat emoticons, thanks again for your help and interest in me ?
Click to expand...
Click to collapse
Buster99 deserves a medal or something for this post. Dozens of people have recovered from a brick using his method!
Glad you got it going!

[Q] Can't boot into TWRP after updating to 4.4.3

Before I updated to 4.4.3 I was able to boot into TWRP by using the fastboot commands:
fastboot boot twrp.img
It would automatically reboot the phone into TWRP where I could flash SuperSU yet retain stock recovery.
Now when I attempt to do the very same thing on 4.4.3 I get:
downloading 'boot.img'...
OKAY [ 1.320s]
booting...
OKAY [ 0.402s]
finished. total time: 1.722s
The phone reboots but instead of rebooting into TWRP it just reboots the entire system.
I'm using stock everything, S-off and Unlocked.
Any help is appreciated.

maaavy said:
Before I updated to 4.4.3 I was able to boot into TWRP by using the fastboot commands:
fastboot boot twrp.img
It would automatically reboot the phone into TWRP where I could flash SuperSU yet retain stock recovery.
Now when I attempt to do the very same thing on 4.4.3 I get:
downloading 'boot.img'...
OKAY [ 1.320s]
booting...
OKAY [ 0.402s]
finished. total time: 1.722s
The phone reboots but instead of rebooting into TWRP it just reboots the entire system.
I'm using stock everything.
Any help is appreciated.
Click to expand...
Click to collapse
Why not just flash that recovery and then boot to it from the menu? Or you use flashify from within the Rom and change recoveries on the fly?

dottat said:
Why not just flash that recovery and then boot to it from the menu? Or you use flashify from within the Rom and change recoveries on the fly?
Click to expand...
Click to collapse
Worked like a charm. Thanks!

maaavy said:
Before I updated to 4.4.3 I was able to boot into TWRP by using the fastboot commands:
fastboot boot twrp.img
It would automatically reboot the phone into TWRP where I could flash SuperSU yet retain stock recovery.
Now when I attempt to do the very same thing on 4.4.3 I get:
downloading 'boot.img'...
OKAY [ 1.320s]
booting...
OKAY [ 0.402s]
finished. total time: 1.722s
The phone reboots but instead of rebooting into TWRP it just reboots the entire system.
I'm using stock everything, S-off and Unlocked.
Any help is appreciated.
Click to expand...
Click to collapse
I know you got this resolved, but for future reference, your command should be: fastboot flash recovery nameofrecovery.img
You flashed the recovery as if it were a boot.img, which it's not.

santod040 said:
I know you got this resolved, but for future reference, your command should be: fastboot flash recovery nameofrecovery.img
You flashed the recovery as if it were a boot.img, which it's not.
Click to expand...
Click to collapse
Brain fart on my part. Such an obvious mistake. Thanks!

santod040 said:
I know you got this resolved, but for future reference, your command should be: fastboot flash recovery nameofrecovery.img
You flashed the recovery as if it were a boot.img, which it's not.
Click to expand...
Click to collapse
I wanted to follow up on this. I've used his idea in the past on another htc device. I'd "fastboot boot <recovery>.img" and I could flash whole ROMs without touching the existing recovery. As soon as you reboot the old recovery is still there. His command wasn't an incorrect syntax for flashing a boot.img it was temporarily booting into a recovery. Is there any reason this wouldn't work nowadays?

cntryby429 said:
I wanted to follow up on this. I've used his idea in the past on another htc device. I'd "fastboot boot <recovery>.img" and I could flash whole ROMs without touching the existing recovery. As soon as you reboot the old recovery is still there. His command wasn't an incorrect syntax for flashing a boot.img it was temporarily booting into a recovery. Is there any reason this wouldn't work nowadays?
Click to expand...
Click to collapse
Yeah I know that was possible in the past, to flash a rom using a recovery one time, without overwriting the current one.
As I've never seen any real need or purpose to doing that, I've never done it that way.
I do know that the other command is what should be used to actually overwrite and flash a new recovery for further use.
So I can't really answer as to whether that method still works or not.
Didn't sound like it did for him though.

HELP! Nvidia Shield OEM 6.0 NO RECOVERY! NO ROOT!

Hi, everybody, I am having problems with my nvidia shield tablet, it seems that after I had updated to android 6.0 I lost my custom recovery, and the original recovery is not there. Therefore I cannot update to 6.0.1, i cannot root, and my computer does not recognize the tablet when i go into the bootloader. Please help!

Are you able to turn off the tablet and use the volume keys to get into bootloader/fastboot mode? You can fastboot flash recovery from there.
Sent from my Nexus 6 using XDA-Developers mobile app

Are you able to turn off the tablet and use the volume keys to get into bootloader/fastboot mode? You can fastboot flash recovery from there.
Sorry it took so long to reply, yes, I can get into the boot loader. I can even fastboot, but my computer can't seem to communicate to my tablet once its in Fastboot/bootloader so every time I try to do as you said. My computer can't send the commands because it doesn't recognize the tablet.

Update drivers

I also lost twrp and root after the full OTA update. I tried to fastboot flash recovery back, but when I reboot into recovery it says "no command". How can I fix this? Its seems as if the recovery partition is gone? Thanks for any help.

That is stock recovery

lafester said:
That is stock recovery
Click to expand...
Click to collapse
How can I get TWRP to flash then? I am getting this:
Code:
sudo ./fastboot flash recovery recovery.img
[sudo] password:
target reported max download size of 100663296 bytes
sending 'recovery' (7228 KB)...
OKAY [ 0.353s]
writing 'recovery'...
OKAY [ 0.334s]
finished. total time: 0.687s
It finishes too fast to actually do anything. I have tried both 3.0.0 and 3.0.2 twrp for MM. I would appreciate any suggestions on how to fix this. Thanks.

You renamed twrp to recovery? If so you did flash it. Do you reboot directly into recovery?
Sent from my SHIELD Tablet using Tapatalk

Yes I renamed it to recovery.img and rebooted. When I reboot to recovery, it still just says no command.

Are you unlocked?

Yes boot loader shows unlocked

Latest twrp?

Bricked shield Tablet, fastboot only works.

Going through some of the threads here got me as far as being able to use fastboot on my bricked Shield.
I would like to ask if anyone can give me some pointers what to try next.
The previous owner tried to flash Lineage OS onto the Tablet using CWM but this failed and he probably wiped some needed partition.
I tried to flash new partitions and this works but I can not start the Shield and it won't boot into CWM. The strange thing is that I tried flashing TWRP and even though that started it did not boot through. And after a simple Shield reboot the CWM logo popped upmagain.....:confused
I was convinced I could fix this but I am beginning to think that this Tablet is a goner...
Any thoughts would ne appreciated.

What happens if you download an original recovery image from Nvidia for your model, and flashboot flash all 5 (recovery, boot, system, userdata, blob)? Do you get any fastboot errors? If the partition structure is corrupted, you'll see some sort of error message.
If the blob is messed up sometimes TWRP won't start. I suggest getting a factory image and trying again, then giving it a long time to boot. Once mine took 20 minutes at the Nvidia screen.

I did try flashing the original image from Nvidia including the other 4 images. One of the first things I tried. I woyld like to get it back to factory default. This went without issues an no errors. I might not have given it enough tine to but but still CWM seems to be on.
Will give it another try and post a screenshot.
Sent from my SM-G935F using Tapatalk

Here is a dump of the flash log. After flashing I reboot and the CWM logo pops up after a few minutes and gets stuck.
D:\Downloads\Shield Fix\Drivers\ADB FastBoot\Minimal ADB and Fastboot>fastboot flash recovery recovery.img
target reported max download size of 100663296 bytes
sending 'recovery' (9758 KB)...
OKAY [ 0.384s]
writing 'recovery'...
OKAY [ 0.320s]
finished. total time: 0.709s
D:\Downloads\Shield Fix\Drivers\ADB FastBoot\Minimal ADB and Fastboot>fastboot boot recovery.img
downloading 'boot.img'...
OKAY [ 0.394s]
booting...
OKAY [ 0.017s]
finished. total time: 0.417s

Think it is done for, after flashing TWRP numerous times it let me get to the start screen for TWRP it then hangs. When you reboot the Shield and want to go to the recovery again you get the dead android.
PS. I can sometimes get into TWRP but it fails on everything I do. Would there be a terminal solution for this? Like re-creating partitions?

Unlock your bootloader?
Sent from my ZTE A2017U using Tapatalk

It is already unlocked I am afraid.
Sent from my SM-G935F using Tapatalk

sn0r said:
It is already unlocked I am afraid.
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
Try to flash the attached file. Remember to unzip it first! Flash with:
"fastboot flash dtb tegra124-tn8-p1761-1270-a04-e-battery.dtb"

Flashed the battery file and did another flash of NVIDIA's recovery image and even-tough it says everything is flashed correctly when I reboot I get the CWM logo and nothing more. When I do get into TWRP and try to flash a ROM I get messages errors like attached.

sn0r said:
Flashed the battery file and did another flash of NVIDIA's recovery image and even-tough it says everything is flashed correctly when I reboot I get the CWM logo and nothing more. When I do get into TWRP and try to flash a ROM I get messages errors like attached.
Click to expand...
Click to collapse
Then my guess would be some problems with the internal storage which may not be repairable.

Using fastboot try the following
Fastboot erase cache
Fastboot format cache
Fastboot format userdata
Make sure your tablet is in bootloader mode first though.
Sent from my pa_osprey using Tapatalk

How to backup stock recovery before flashing TWRP?

Hi. How can I backup the stock recovery on my Xiaomi Poco X3 NFC before flashing the TWRP?
I tried executing following code while the phone is in fastboot mode but it never actually boots the custom recovery. It get's stuck at the poco boot logo. Yes my phone has unlocked bootloader.
Code:
fastboot boot TWRP.img
In terminal I get this output:
Code:
[email protected]:/# fastboot boot twrp_3.4.0-15_mauronofrio.img
downloading 'boot.img'...
OKAY [ 3.080s]
booting...
OKAY [ 5.088s]
finished. total time: 8.168s
Does anybody know why this command is not working? Thanks.

lebigmac said:
Hi. How can I backup the stock recovery on my Xiaomi Poco X3 NFC before flashing the TWRP?
I tried executing following code while the phone is in fastboot mode but it never actually boots the custom recovery. It get's stuck at the poco boot logo. Yes my phone has unlocked bootloader.
Code:
fastboot boot TWRP.img
In terminal I get this output:
Code:
[email protected]:/# fastboot boot twrp_3.4.0-15_mauronofrio.img
downloading 'boot.img'...
OKAY [ 3.080s]
booting...
OKAY [ 5.088s]
finished. total time: 8.168s
Does anybody know why this command is not working? Thanks.
Click to expand...
Click to collapse
I have had the same issues with that TWRP from mauronofrio and our stock ramdisk image. However, using Orangefox or the latest 3.5.0 TWRP which can be found in the Index for our device (everything can be found there lol) solved that issue, also, you don't need to backup the recovery partition, because the stock can be easily found and flashed the same.

Thanks but that still doesn't explain why the command fastboot boot twrp.img doesn't work on the Xiaomi Poco X3 NFC with unlocked bootloader.
EDIT:
Ok good news. I've actually managed to boot into the TWRP before flashing it.
As soon as it's done uploading the recovery to the phone you must unplug the USB cable. The timing is very important.
Good luck!

lebigmac said:
This appears to be a more widespread issue than I had originally thought:
Fastboot boot <boot.img> doesn't work but flash does
Hi there ! I compiled a kernel for my DB410. I am trying to boot it using $ fastboot boot boot.img Following the instructions that can be found here: https://builds.96boards.org/releases/dragonboard410c/linaro/debian/17.06.1/ Unfortunately, the device doesn’t boot. It starts the booting...
discuss.96boards.org
fastboot boot TWRP.img Not working
I'm trying to just boot the TWRP image for my OnePlus 5t to then install a custom ROM. So I typed fastboot boot "C:\Users\Elias\Downloads\twrp-3.3.1-0-dumpling.img" and it seemed to work and I got ...
android.stackexchange.com
https://www.reddit.com/r/LineageOS/comments/arakiy
After Android Q upgrade fastboot boot doesn't work on guacamole · Issue #1530 · TeamWin/Team-Win-Recovery-Project
I am running an official build of TWRP, downloaded from https://twrp.me/Devices/ I am running the latest version of TWRP I have read the FAQ (https://twrp.me/FAQ/) I have searched for my issue and ...
github.com
Can't boot TWRP image using fastboot boot
I'm trying to root my Moto Z3 Play. I'm on Windows 10, I have already unlocked the bootloader, however, I can't boot the twrp.img. I got the twrp.img from here https://twrp.me/motorola/motorolamoto...
stackoverflow.com
Click to expand...
Click to collapse
try latest OFOX or TWRP (OFOX image needs to be extracted from zip file), I'm really interested if some of these will boot via "fastboot boot recovery.img", thanks

lebigmac said:
Hi. How can I backup the stock recovery on my Xiaomi Poco X3 NFC before flashing the TWRP?
I tried executing following code while the phone is in fastboot mode but it never actually boots the custom recovery. It get's stuck at the poco boot logo. Yes my phone has unlocked bootloader.
Code:
fastboot boot TWRP.img
In terminal I get this output:
Code:
[email protected]:/# fastboot boot twrp_3.4.0-15_mauronofrio.img
downloading 'boot.img'...
OKAY [ 3.080s]
booting...
OKAY [ 5.088s]
finished. total time: 8.168s
Does anybody know why this command is not working? Thanks.
Click to expand...
Click to collapse
You don't need to backup the sock recovery.
Everything you need to do is download the stock rom and extract recovery.

@jeryll thanks for chiming in. All of these TWRP images will boot via "fastboot boot recovery.img" on our device.
It's important to unplug the USB cable at the right moment as soon as it's done uploading. Good luck!