[Q] Recovery not happening on RCK button - Asus Transformer TF700

Problem: The TF700 is reboot cycling without ever getting further than the initial ASUS logo. The recovery is not getting installed from SDCARD. I tried with US_epad-user-10.6.1.14.10.zip and WW_epad-user-10.6.1.14.10.zip (I don't know the SKU), renamed to EP201_768_SDUPDATE.zip on the root of an 8GB SDCARD formatted with vfat.
History: I live in Germany and got a FT700 from a friend that bought it in the USA. He had power issues but thought it is a software problem and it seems he somehow bricked it. If I can repair it, I can keep it
I was able to build a power charger (yes, 15V over a USB cable...) from an old notebook charger and could successfully charge the tablet and the keyboard.
Messages: Pressing Power-Vol when booting ->
Android cardhu-user bootloader <1.00 e> released by "US_epad-10.6.1.14.10-20130801-20130801" A03
Key driver not found.. Booting OS
Starting Fastboot USB download protocol
Then three buttons appear in the screens center: RCK, android, WIPE DATA. I can move with Volume around and select. When I select RCK it writes:
Booting Recovery kernel image
Signature Match. (with both SKU versions)
The RCK button stops to flash, but no android bot or a progress bar ever appears
I can use fastboot over USB from Linux. I can run everything described here: http://forum.xda-developers.com/showthread.php?t=2538028 except it will not install a custom boot loader - because it's locked :crying:
Any idea how I can proceed? I would so much love to use this tablet! I am fluent in Linux command line and I'm willing to try desperate measures. Any help greatly appreciated!

dan54321 said:
I can use fastboot over USB from Linux. I can run everything described here: http://forum.xda-developers.com/showthread.php?t=2538028 except it will not install a custom boot loader - because it's locked :crying:
Any idea how I can proceed?
Click to expand...
Click to collapse
Have you tried to select "wipe data" and see if Android boots then?
wait... have you run any commands like "fastboot erase recovery" before? if yes, the above might hard brick your tablet.
If that doesn't work, the next idea would be to try to install a full firmware via fastboot.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4

_that said:
Have you tried to select "wipe data" and see if Android boots then?
If that doesn't work, the next idea would be to try to install a full firmware via fastboot.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
Click to expand...
Click to collapse
Can you use fastboot on a locked bootloader?

berndblb said:
Can you use fastboot on a locked bootloader?
Click to expand...
Click to collapse
Yes, the fastboot is a part of the bootloader but the blob has to be signed...

Hey
Thank you for helping me
_that said:
Have you tried to select "wipe data" and see if Android boots then?
Click to expand...
Click to collapse
I actually did that - nothing changed.
_that said:
wait... have you run any commands like "fastboot erase recovery" before? if yes, the above might hard brick your tablet.
Click to expand...
Click to collapse
I did run "fastboot erase recovery", because I thought the recovery partition was corrupted, because the RCK method didn't work. I was hoping to install a new recovery...
_that said:
If that doesn't work, the next idea would be to try to install a full firmware via fastboot.
Click to expand...
Click to collapse
Ok - how do I do that?
I pushed the "blob" from the US_epad-user-10.6.1.14.10.zip with "fastboot -i 0x0B05 flash system boot.blob", but it didn't change anything. I got an "InvalidState" only, when I tried to write the bootloader (I guess because it's locked).

dan54321 said:
I pushed the "blob" from the US_epad-user-10.6.1.14.10.zip with "fastboot -i 0x0B05 flash system boot.blob", but it didn't change anything. I got an "InvalidState" only, when I tried to write the bootloader (I guess because it's locked).
Click to expand...
Click to collapse
I think some user already found out last year the the locked bootloader will happily erase partitions, but then fail to flash the blob, even if it is signed. Sorry, no other ideas.

dan54321 said:
I pushed the "blob" from the US_epad-user-10.6.1.14.10.zip with "fastboot -i 0x0B05 flash system boot.blob", but it didn't change anything. I got an "InvalidState" only, when I tried to write the bootloader (I guess because it's locked).
Click to expand...
Click to collapse
Where did you get the boot.blob? In the original Asus firmware zip, there is only a blob file. Even if you unpack the blob file, these are the dot files after unpacking the blob: .APP, .EBT, .LNX, .PT, .SOS. Are you sure that you have the right blob file for the stock ROM?
_that is very a knowledgeable person. If he said that he is out of idea, your chances are very low...
Good luck....:fingers-crossed:

LetMeKnow said:
Where did you get the boot.blob? In the original Asus firmware zip, there is only a blob file. Even if you unpack the blob file, these are the dot files after unpacking the blob: .APP, .EBT, .LNX, .PT, .SOS. Are you sure that you have the right blob file for the stock ROM?
_that is very a knowledgeable person. If he said that he is out of idea, your chances are very low...
Good luck....:fingers-crossed:
Click to expand...
Click to collapse
boot.blob sounds like a kernel file to me.....

dan54321 said:
I pushed the "blob" from the US_epad-user-10.6.1.14.10.zip with "fastboot -i 0x0B05 flash system boot.blob", but it didn't change anything. I got an "InvalidState" only, when I tried to write the bootloader (I guess because it's locked).
Click to expand...
Click to collapse
The last part of the fastboot flash command has to match whatever the file you want to flash is named.
If the extracted system blob is named "blob" without an extension, the command would be 'fastboot -i 0x0B05 flash system blob'
If it is named blob.blob the command would be 'fastboot -i 0x0B05 flash system blob.blob'
etc.
Is the blob file you extracted actually named boot.blob?
You can also try 'fastboot -i 0x0B05 flash staging blob' followed by a reboot.
Somebody correct me if I'm wrong please....

berndblb said:
The last part of the fastboot flash command has to match whatever the file you want to flash is named.
If the extracted system blob is named "blob" without an extension, the command would be 'fastboot -i 0x0B05 flash system blob'
If it is named blob.blob the command would be 'fastboot -i 0x0B05 flash system blob.blob'.
Click to expand...
Click to collapse
I think that your first fastboot command is correct: 'fastboot -i 0x0B05 flash system blob'.
berndblb said:
You can also try 'fastboot -i 0x0B05 flash staging blob' followed by a reboot.
Somebody correct me if I'm wrong please....
Click to expand...
Click to collapse
I have not used the staging in fastboot.... However, you can "dd" the blob to your staging partition, /dev/block/mmcblk0p4 with a reboot....

LetMeKnow said:
I think that your first fastboot command is correct: 'fastboot -i 0x0B05 flash system blob'.
I have not used the staging in fastboot.... However, you can "dd" the blob to your staging partition, /dev/block/mmcblk0p4 with a reboot....
Click to expand...
Click to collapse
If you can dd it - why not fastboot it? Should be one of a dozen etc pp, shouldn't it?
Would be great if somebody could clarify this because I have been wondering.... I have read people successfully using the 'flash system blob' as well as 'flash staging blob', which lead me to the impression you can use either of these with the same result (????)

berndblb said:
If you can dd it - why not fastboot it? Should be one of a dozen etc pp, shouldn't it?
Would be great if somebody could clarify this because I have been wondering.... I have read people successfully using the 'flash system blob' as well as 'flash staging blob', which lead me to the impression you can use either of these with the same result (????)
Click to expand...
Click to collapse
You could grab _that's kernel blob or hund's kernel boot.blob and try it out.... In the installer script, They extracted them into the staging partition for the next boot any way... They don't touch the bootloader or recovery. You can check with _that or Hund to be sure...Good luck...:fingers-crossed:

tanutd Doric
Wow - so many replies in such a shot time!
_that said:
I think some user already found out last year the the locked bootloader will happily erase partitions, but then fail to flash the blob, even if it is signed.
Click to expand...
Click to collapse
That's just stupid... hmm.. maybe not, if the intention is, that you can delete your private data even if system is broken....
blob
Click to expand...
Click to collapse
I did rename it from blob to boot.blob (was following http://forum.xda-developers.com/showthread.php?t=2538028).
LetMeKnow said:
I have not used the staging in fastboot.... However, you can "dd" the blob to your staging partition, /dev/block/mmcblk0p4 with a reboot....:
Click to expand...
Click to collapse
How do I access /dev/block/mmcblk0p4 from fastboot?
I ran:
Code:
$ fastboot -i 0x0B05 flash staging boot.blob
sending 'staging' (800927 KB)...
OKAY [893.525s]
writing 'staging'...
OKAY [234.634s]
finished. total time: 1128.159s
At the end a blue progress bar appeared (no android bot) and finished to the right. The RCK button began to flash again, I used it - "Booting Recovery kernel image. Signature Match." - nothing. After that I shut it down (power-vol) and booted - just the ASUS logo

dan54321 said:
I ran:
Code:
$ fastboot -i 0x0B05 flash staging boot.blob
sending 'staging' (800927 KB)...
OKAY [893.525s]
writing 'staging'...
OKAY [234.634s]
finished. total time: 1128.159s
At the end a blue progress bar appeared (no android bot) and finished to the right.
Click to expand...
Click to collapse
That looks good so far. I never understood what the fastboot implementation on the TF700 did with the target partition you specify on the command line anyway ("staging" is not even in the list returned by fastboot getvar) - since the blob contains one or more partition images with a header that says which image is for which partition. For OTA updates or when flashing the firmware from the recovery, the blob is written to the staging partition, and at the next reboot the bootloader writes the images to the final target partitions (with the blue progress bar).
dan54321 said:
The RCK button began to flash again, I used it - "Booting Recovery kernel image. Signature Match." - nothing. After that I shut it down (power-vol) and booted - just the ASUS logo
Click to expand...
Click to collapse
The animated ASUS logo or just the white one from the bootloader?

_that said:
That looks good so far. I never understood what the fastboot implementation on the TF700 did with the target partition you specify on the command line anyway ("staging" is not even in the list returned by fastboot getvar) - since the blob contains one or more partition images with a header that says which image is for which partition. For OTA updates or when flashing the firmware from the recovery, the blob is written to the staging partition, and at the next reboot the bootloader writes the images to the final target partitions (with the blue progress bar).
The animated ASUS logo or just the white one from the bootloader?
Click to expand...
Click to collapse
Unfortunately just the white one (not animated) from the bootloader.

dan54321 said:
How do I access /dev/block/mmcblk0p4 from fastboot?
I ran:
Code:
$ fastboot -i 0x0B05 flash staging boot.blob
sending 'staging' (800927 KB)...
OKAY [893.525s]
writing 'staging'...
OKAY [234.634s]
finished. total time: 1128.159s
At the end a blue progress bar appeared (no android bot) and finished to the right. The RCK button began to flash again, I used it - "Booting Recovery kernel image. Signature Match." - nothing. After that I shut it down (power-vol) and booted - just the ASUS logo
Click to expand...
Click to collapse
You already did with the fastboot command above so you don't need to dd the blob to your staging partition... I guessed that both commands serving the same purpose... The good thing is that your bootloader and fastboot are still working... _that may have a solution for you... Good luck...:fingers-crossed:
@berndblb
I guessed that you found the answer for your question above..
fastboot -i 0x0B05 flash staging boot.blob :laugh:

LetMeKnow said:
The good thing is that your bootloader and fastboot are still working... _that may have a solution for you...
Click to expand...
Click to collapse
Unfortunately not. I assume that the recovery and android kernels are now properly installed since the flashing went normally, but I have no idea why they fail to boot.

_that said:
Unfortunately not. I assume that the recovery and android kernels are now properly installed since the flashing went normally, but I have no idea why they fail to boot.
Click to expand...
Click to collapse
Actually, I had the same issue that it was not booting and only stuck at the Asus booting logo. I believed that two things may cause this issue.. One is the system is somehow not mounting. Two is the data partition is corrupted. For this case, it is more likely the data partition is corrupted. Maybe, he/she can try to use fastboot to erase the data partition and reinstall the Asus stock blob to see if it boots....:fingers-crossed:
Is there a way to format the data partition with fastboot or ADB?

LetMeKnow said:
Actually, I had the same issue that it was not booting and only stuck at the Asus booting logo. I believed that two things may cause this issue.. One is the system is somehow not mounting. Two is the data partition is corrupted. For this case, it is more likely the data partition is corrupted. Maybe, he/she can try to use fastboot to erase the data partition and reinstall the Asus stock blob to see if it boots....:fingers-crossed:
Is there a way to format the data partition with fastboot or ADB?
Click to expand...
Click to collapse
Reinstalling the blob should not be necessary since it was already flashed successfully.
Wiping data should work with something like "fastboot format data".

Ok - that sounds like there might still be a way. I will try to format the data partition this evening and report.

Related

My tablet works only in fastboot mode and APX, nothing else. HELP

My tablet works only in fastboot mode and APX, nothing else. Was on 4.1.1.
Does anyone can help me to unbrick?
thank you.
I can donate your help
tyla777 said:
My tablet works only in fastboot mode and APX, nothing else. Was on 4.1.1.
Does anyone can help me to unbrick?
thank you.
I can donate your help
Click to expand...
Click to collapse
First you need to provide more info (i.e. did you tried to flash something before this issue occured?, your device is unlocked?) and maybe we can help you.
Yes tablet is unlocked.
i flashed it with CWM Recovery and problems started.
Can't mount anything....
Then i used commands:
fastboot erase boot
fastboot erase recovery
Now then i trying to boot , it brings me error
http://youtu.be/P19Y3Apmbac
tyla777 said:
Yes tablet is unlocked.
i flashed it with CWM Recovery and problems started.
Can't mount anything....
Then i used commands:
fastboot erase boot
fastboot erase recovery
Now then i trying to boot , it brings me error
http://youtu.be/P19Y3Apmbac
Click to expand...
Click to collapse
I can't read the error from that video but i think you should flash a boot.img via fastboot and then flash CWM or TWRP recovery the same vai (via fastboot). BTW you have to use a boot.img from a JB rom.
Pretoriano80 said:
I can't read the error from that video but i think you should flash a boot.img via fastboot and then flash CWM or TWRP recovery the same vai (via fastboot). BTW you have to use a boot.img from a JB rom.
Click to expand...
Click to collapse
Error is 0x000000000
Where i can get boot.img?
Then i extract blob file, i get 5 blob filesblob.
HEADER – Header stuff (ignore it)
blob.APP – system.img
blob.LNX – boot.img
blob.SOS – recovery.img (e.g. regular boot.img)
blob.EBT – bootloader.bin (ignore)
Do i have to rename blob.LNX to boot.img or i should't ?
Do i need to erase all system boot recovery data?
Thanks.
tyla777 said:
Yes tablet is unlocked.
i flashed it with CWM Recovery and problems started.
Can't mount anything....
Then i used commands:
fastboot erase boot
fastboot erase recovery
Now then i trying to boot , it brings me error
http://youtu.be/P19Y3Apmbac
Click to expand...
Click to collapse
You made the same mistake I made:
http://forum.xda-developers.com/showthread.php?t=2031452
APX means you get to use nvflash, right?
I wish I was on the same boat.
Yes i can use nvflash.
but i can't restore my bootloder
maybe you know what to flash?
tyla777 said:
Yes i can use nvflash.
but i can't restore my bootloder
maybe you know what to flash?
Click to expand...
Click to collapse
What do you mean with "Yes i can use nvflash"? You already used the NvFlash tool and have the backup files or is just the fact that you are able to boot in APX mode?
As for the other question, yes rename the blob files ( blob.LNX - > boot.img) and flash from fastboot (fastboot -i 0x0B05 flash boot boot.img). Make sure your battery is full, just in case.
Try to flash the recovery.img, boot.img and system.img using the abive method.
Pretoriano80 said:
What do you mean with "Yes i can use nvflash"? You already used the NvFlash tool and have the backup files or is just the fact that you are able to boot in APX mode?
As for the other question, yes rename the blob files ( blob.LNX - > boot.img) and flash from fastboot (fastboot -i 0x0B05 flash boot boot.img). Make sure your battery is full, just in case.
Try to flash the recovery.img, boot.img and system.img using the abive method.
Click to expand...
Click to collapse
Just the fact
Flashed recovery boot system didn't helped
maybe someone knows how to flash with nvflash?
tyla777 said:
Just the fact
Flashed recovery boot system didn't helped
maybe someone knows how to flash with nvflash?
Click to expand...
Click to collapse
Being able to boot in APX doesn't mean you can use NvFlash to flash your device.If you never used the NvFlash tool to backup your files (and gain NvFlash access) you won't be able to do it anymore because a 9.4.5.26 or lower bootloader it's needed.
I'm not sure if the follow procedure will work but you could try to flash the complete blob via fastboot (rename the original asus blob to something like " tf700t.blob " , something like this : fastboot -i 0x0B05 flash staging tf700t.blob
Someone please correct me if the " flashing to staging" procedure is different.
Pretoriano80 said:
Being able to boot in APX doesn't mean you can use NvFlash to flash your device.If you never used the NvFlash tool to backup your files (and gain NvFlash access) you won't be able to do it anymore because a 9.4.5.26 or lower bootloader it's needed.
I'm not sure if the follow procedure will work but you could try to flash the complete blob via fastboot (rename the original asus blob to something like " tf700t.blob " , something like this : fastboot -i 0x0B05 flash staging tf700t.blob
Someone please correct me if the " flashing to staging" procedure is different.
Click to expand...
Click to collapse
maybe someone knows thne will be released NVFLASH version that support 10.... ver.
tyla777 said:
maybe someone knows thne will be released NVFLASH version that support 10.... ver.
Click to expand...
Click to collapse
ATM there's no way to do that ,Asus locked the bootloader pretty tight this time.
If you still can't manage to fix your issue i would recommend you an RMA ticket from Asus.

Unrecoverable bootloader error but not Bricked!

So I unlocked my tf300t and flashed cwm to recovery.
Everything seemed to go fine.
When I would go into cwm it was not able to mount or access any other part of my tab. I figured ok erase/format the recovery partition and try TWRP. So I booted to the bootloader, using fastboot I erased recovery but now whenever I go to flash a new recovery my bootloader either freezes or I get an Unrecoverable bootloader error 0x00000000 (not sure if thats the right amount of zeros but there are no other digits in the error code.) I can access fastboot and adb but it doesn't seem like I can flash using fastboot and I just don't feel comfortable trying with adb. Also I can access fastboot only from the bootloader screen and adb only after I boot into my current rom (stock 4.2.1)
I guess my questions are this:
How can I format my recovery or flash a new recovery?
Were the mount issues I originally encountered going to be solved with a new recovery?
Please help!
Have you tried installing stock rom (from Asus support page) using Fastboot? It should also put stock recovery in your tablet.
Not sure if it is going to work, but it's worth trying though.
1st this is not for the dev section. You should ask questions in the Q&A section.
Go to Asus and dl the latest Stock. Unzipp it 2 times. You should have a blob file now in the extracted folder. put this blob in your fastboot folder.
Open cmd and type:
fastboot -i 0x0B05 flash staging blob
let it run. It seems that nothing is happening for about 5 Minutes. The whole thing can take up to 20 Minutes, so just stay calm and wait till its finished.
Now you should be back to full Stock with Stock recovery.
mikaole said:
1st this is not for the dev section. You should ask questions in the Q&A section.
Go to Asus and dl the latest Stock. Unzipp it 2 times. You should have a blob file now in the extracted folder. put this blob in your fastboot folder.
Open cmd and type:
fastboot -i 0x0B05 flash staging blob
let it run. It seems that nothing is happening for about 5 Minutes. The whole thing can take up to 20 Minutes, so just stay calm and wait till its finished.
Now you should be back to full Stock with Stock recovery.
Click to expand...
Click to collapse
I had this problem too. But on 4.2.1 you can push file blob, and then it's can't run because stock recovery dead.
Were you able to fix the stock recovery issue?
cdguider said:
Were you able to fix the stock recovery issue?
Click to expand...
Click to collapse
Thant i would like to know aswell
Pls
No, I was not. I also have the unrecoverable bootloader error but I have a working device. I downloaded the latest firmware, followed the steps through fastboot and the same thing keeps happening where as soon as you try to enter a command through fastboot the green box stops flashing over rck and even though the cmd prompt window tells you something is going on nothing happens on the tablet end. It freezes. hard reboot and you end up back with a normal working device, no changes and a corrupt bootloader.
lomoski said:
No, I was not. I also have the unrecoverable bootloader error but I have a working device. I downloaded the latest firmware, followed the steps through fastboot and the same thing keeps happening where as soon as you try to enter a command through fastboot the green box stops flashing over rck and even though the cmd prompt window tells you something is going on nothing happens on the tablet end. It freezes. hard reboot and you end up back with a normal working device, no changes and a corrupt bootloader.
Click to expand...
Click to collapse
I have same issue.. has anybody managed to get a fix for this?
I've same problem, how can i fix it?
i've a working device but without recovery mod! I can't flash anything via fastboot because it freezes, i always have "Unrecoverable bootloader error" when press RCK.
Can somebody help me?
Thanks in advance
mister363 said:
I've same problem, how can i fix it?
i've a working device but without recovery mod! I can't flash anything via fastboot because it freezes, i always have "Unrecoverable bootloader error" when press RCK.
Can somebody help me?
Thanks in advance
Click to expand...
Click to collapse
I was having this problem earlier - a new bootloader came out when they went to 4.2, but most of the instructions online don't reflect this. You need an updated recovery image, which usually has the name recovery-jb.img instead of recovery.img. When you're searching make sure the instructions mention 4.2 and jelly bean.
However, I've only managed to get one step further - have now get into clockworkmod recovery, but as with the OP I then couldn't mount anything inside CWM. I tried another instruction set which involved unzipping the ROM and using adb to push over the .blob. This hasn't worked and I have now got a pretty much bricked device - it either bootloops on the asus splash screen, or loads into CWM.
I've found that even when youre in CWM you can type "adb reboot-bootloader" into the terminal, which forces the RCK/android/wipe data page and fastbook to appear. I've also tried to download the latest stock firmware from ASUS, unzipped it to get the stock .blob out and into my fastboot directory, then run "fastboot -i 0x0B05 flash staging blob" in the terminal, as per mikaole's suggestion. This takes a while to push over the 80mb .blob, but after it says it's staged it says "done" then nothing happens and it's still bricked. hmm.
No one's figured this out? I tried flashing the blob file and my system won't boot at all
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!
cheers
-Buster
IT WORKS!!!
Buster99 said:
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
Click to expand...
Click to collapse
Thank you very much. It works beautifully.
Buster99 said:
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!
cheers
-Buster
Click to expand...
Click to collapse
Now i' m busy because of my Job. But next week i want try your method.
I hope it work for my device!
Inviato dal mio GT-I9100 con Tapatalk 2
Buster99 said:
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!
cheers
-Buster
Click to expand...
Click to collapse
Did your tablet seem to freeze after flashing via fastboot? When I push blob, the console shows that it wrote, but then fastboot on the tablet freezes & I have to manually reboot, putting me right back to the drawing board.
Sent from my HTC One using xda app-developers app
Until now my device freezes. Fastboot seem to work but nothing happens. :banghead:
Inviato dal mio GT-I9100 con Tapatalk 2
P05TMAN said:
Did your tablet seem to freeze after flashing via fastboot? When I push blob, the console shows that it wrote, but then fastboot on the tablet freezes & I have to manually reboot, putting me right back to the drawing board.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
nope. do you use the original cable on usb 2.0 and connected to your pc not a usb hub? should work. if not try a diffrent pc - sometimes usb chipsets make problems.
Buster99 said:
nope. do you use the original cable on usb 2.0 and connected to your pc not a usb hub? should work. if not try a diffrent pc - sometimes usb chipsets make problems.
Click to expand...
Click to collapse
I get invalid argument to all of the erase attempts and the minute I try to push the blob the flashing green icon in fastboot mode on the tablet stops. The command windows says the flash went fine but the tablet is unresponsive and must be reset. Infact any fastboot command that pushed something to the tablet causes it to look up ( indicated by the green flashing RCK icon freezing on whatever phase of green it had at the time)
E:\asus>fastboot -i 0x0B05 flash system e:\asus\blob
erasing 'system'...
OKAY [ 1.975s]
sending 'system' (800935 KB)...
OKAY [134.565s]
writing 'system'...
OKAY [ 2.040s]
finished. total time: 138.583s
I think its time to bin this doorstop and break something new
d3fiant said:
I get invalid argument to all of the erase attempts and the minute I try to push the blob the flashing green icon in fastboot mode on the tablet stops. The command windows says the flash went fine but the tablet is unresponsive and must be reset. Infact any fastboot command that pushed something to the tablet causes it to look up ( indicated by the green flashing RCK icon freezing on whatever phase of green it had at the time)
E:\asus>fastboot -i 0x0B05 flash system e:\asus\blob
erasing 'system'...
OKAY [ 1.975s]
sending 'system' (800935 KB)...
OKAY [134.565s]
writing 'system'...
OKAY [ 2.040s]
finished. total time: 138.583s
I think its time to bin this doorstop and break something new
Click to expand...
Click to collapse
Mine does this same thing.....think it's done for?
Sent from my HTC One using xda app-developers app
Buster99, your instructions saved my device. I missed erasing /misc even though you put it in the directions and my tablet's back! I owe you.

Possible solution for those who used wrong bootloader with TWRP

Buster99 writes about a solution in TF300 thread
http://forum.xda-developers.com/showpost.php?p=44244313&postcount=12
Hope you find it useful!
Best regards
Mackis
Mackis said:
Buster99 writes about a solution in TF300 thread
http://forum.xda-developers.com/showpost.php?p=44244313&postcount=12
Hope you find it useful!
Best regards
Mackis
Click to expand...
Click to collapse
Honestly i don't think it's something new and still require working fastboot (which is impossible if your bootloader is broken) for the recover.
Also i'm a bit confused how they manage to flash the whole blob with " fastboot - i 0x0B05 flash system blob" when afaik the correct command should be : fastboot -i 0x0B05 flash staging blob. (maybe _that could enlight me )
Usually the " system.img" is packed in the full Asus blob and you need to extract it first and then use the " fastboot -i 0x0B05 flash system system.img" command or you can repack the system.img into blob (with blobpack tool) and flash with " fastboot -i 0x0B05 flash system blob" .
Inviato dal mio ASUS Transformer Pad TF700T usando Tapatalk 4
I´m confused to, but as several people testify that it was a solution to make use of their expensive doorstoppers it must be of some value
I dont think the bootloader was totaly corrupt as they could enter fastboot but that after they reset with the paperclip method.... i don´t know if that change anything...
_That maybe can bring some light in this ?
Best regards
Mackis
Pretoriano80 said:
Also i'm a bit confused how they manage to flash the whole blob with " fastboot - i 0x0B05 flash system blob" when afaik the correct command should be : fastboot -i 0x0B05 flash staging blob. (maybe _that could enlight me )
Click to expand...
Click to collapse
I don't know, the Asus (NVidia?) fastboot implementation is a bit strange. Maybe it ignores the partition name given on the command line completely and always uses the one in the blob. At least the guys at androidroot.mobi said that it only flashes blobs, not raw partition images.
Pretoriano80 said:
Usually the " system.img" is packed in the full Asus blob and you need to extract it first and then use the " fastboot -i 0x0B05 flash system system.img" command or you can repack the system.img into blob (with blobpack tool) and flash with " fastboot -i 0x0B05 flash system blob" .
Click to expand...
Click to collapse
Does that really work on a locked device? Repacking or extracting the blob invalidates the cryptographic signature.
_that said:
I don't know, the Asus (NVidia?) fastboot implementation is a bit strange. Maybe it ignores the partition name given on the command line completely and always uses the one in the blob. At least the guys at androidroot.mobi said that it only flashes blobs, not raw partition images.
Does that really work on a locked device? Repacking or extracting the blob invalidates the cryptographic signature.
Click to expand...
Click to collapse
Nah, fastboot on locked device is pretty useless, it looks like it's working but every command sent doesn't do anything.
On unlocked device it worked in the past but i can't tell if if still working cause i didn't tried that in a long time.

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!

bootloader error 0x00000000

Well, what happened is :
that i was trying to root my Transformer tf300t
and i got as far as unlocking the bootloader
so i was having trouble flashing the twrp recovery image
and i think i accidentally erased the stock recovery image
so now my tablet it's not (full bricked) still boots up but doesn't have a recovery image
and now when i boot it into bootloader mode and try to go into RCK it just gives me this
error bootloader unrecoverable 0x0000000 (in red)
how can i flash the stock ROM again if this error ?
anybody ?HELLP
daveSAPIEN said:
error bootloader unrecoverable 0x0000000(in red)
how can i flash the stock ROM again if this error ?
anybody ?HELLP
Click to expand...
Click to collapse
Please try this:
Go to Asus and dl the latest Stock. Unzipp it 2 times. You should have a blob file now in the extracted folder. Put this blob in your fastboot folder.
Open cmd and type:
fastboot -i 0x0B05 flash staging blob
Let it run. It seems that nothing is happening for about 5 Minutes. The whole thing can take up to 20 Minutes, so just stay calm and wait till it’s finished.
Now you should be back to full Stock with Stock recovery. Good luck!
THanks !
ebonit said:
Please try this:
Go to Asus and dl the latest Stock. Unzipp it 2 times. You should have a blob file now in the extracted folder. Put this blob in your fastboot folder.
Open cmd and type:
fastboot -i 0x0B05 flash staging blob
Let it run. It seems that nothing is happening for about 5 Minutes. The whole thing can take up to 20 Minutes, so just stay calm and wait till it’s finished.
Now you should be back to full Stock with Stock recovery. Good luck!
Click to expand...
Click to collapse
Thank you ... it worked i think
but i used a little different command line i used :
fastboot -i 0x0B05 flash system c:\adb\recovery.blob
now i'm still having problems trying to flash custom recovery i want to root the Tablet
what the problem seems to be for me is that i boot the the tablet (tf330t transformer 4.2.1 JB )
to fastboot mode then i get the 3 choices (RCK, Android,Wipe Data)
but when i try to flash the TWRP recovery img with Fastboot it always gives me an error saying (error cannot load img file)
is there anyway to fix this ? and does this root the tablet?
Dear daveSAPIEN can you give us more information about the file used during the flash , actually am facing the same problem as you but nothing seems to work
thank you

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