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[Q] help to get back to stock

tf300t unroot with android 4.2.1
running in 10.6.1.15.3
system always boot to cwm
from pc using cmd using adb reboot-bootloader
in the fastboot mode
with no usb icon
unable to flash with anything
not even able to cold boot
just only able to boot to cwm v6.0.2.3
each time need to cmd to boot to fastboot but no usb icon
any idea
question is this mean im in brick

Sheena0220 said:
tf300t unroot with android 4.2.1
running in 10.6.1.15.3
system always boot to cwm
from pc using cmd using adb reboot-bootloader
in the fastboot mode
with no usb icon
unable to flash with anything
not even able to cold boot
just only able to boot to cwm v6.0.2.3
each time need to cmd to boot to fastboot but no usb icon
any idea
question is this mean im in brick
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=42011887#post42011887 - read this post and let me know if you have any questions.

it doesnt work for me
i did exactly how you say
place the unzip file to sdcard
place the sd card to the side of the mmsd slot
reboot the tablet
nothing happen
even try to reboot in the fastboot mode and press the up button at he rck mode
still no go
i just have no idea how i got to the point that the bootloader fail went i in the fastboot->rck
show that fail bootloader with (0x000000000)
i can only get to APX mode and Fastboot using pc (but i cant do nothing to it) it doesnt show the usb icon
i can read the tablet
but i cant write anything to it
im still waiting for something happen
hope one of this master
have a software and about to bring back to live

Sheena0220 said:
it doesnt work for me
i did exactly how you say
place the unzip file to sdcard
place the sd card to the side of the mmsd slot
reboot the tablet
nothing happen
even try to reboot in the fastboot mode and press the up button at he rck mode
still no go
i just have no idea how i got to the point that the bootloader fail went i in the fastboot->rck
show that fail bootloader with (0x000000000)
i can only get to APX mode and Fastboot using pc (but i cant do nothing to it) it doesnt show the usb icon
i can read the tablet
but i cant write anything to it
im still waiting for something happen
hope one of this master
have a software and about to bring back to live
Click to expand...
Click to collapse
The previous link you were provided only works with stock recovery not cwm or twrp.
The 4.2 bootloader (10.6.?.?.?) does not have a usb icon. When you get to the bootloader press no buttons and wait for notification in the upper left - entering fastboot.

Sheena0220 said:
it doesnt work for me
i did exactly how you say
place the unzip file to sdcard
place the sd card to the side of the mmsd slot
reboot the tablet
nothing happen
even try to reboot in the fastboot mode and press the up button at he rck mode
still no go
i just have no idea how i got to the point that the bootloader fail went i in the fastboot->rck
show that fail bootloader with (0x000000000)
i can only get to APX mode and Fastboot using pc (but i cant do nothing to it) it doesnt show the usb icon
i can read the tablet
but i cant write anything to it
im still waiting for something happen
hope one of this master
have a software and about to bring back to live
Click to expand...
Click to collapse
http://www.androidauthority.com/transformer-pad-tf300t-restore-stock-firmware-108016/ = try this method. this is the fastboot method. FYI, as sheena said, you dont need to see the usb icon. immediately u boot into the bootloader, the tablet enters fastboot mode. if you need more detailed instructios, add me on skype or facebook. i'll be glad to help.

crazynitro said:
http://www.androidauthority.com/transformer-pad-tf300t-restore-stock-firmware-108016/ = try this method. this is the fastboot method. FYI, as sheena said, you dont need to see the usb icon. immediately u boot into the bootloader, the tablet enters fastboot mode. if you need more detailed instructios, add me on skype or facebook. i'll be glad to help.
Click to expand...
Click to collapse
thx for the instruction
i will try it tonight
i think i see somewhere before and try it before with the code in the cmd
at fastboot
while the tablet still flashing with the 3 icon (rck, android, and wipe data)
in pc i type this code as follow
fastboot device
come out the sn #
fastboot -i 0x0b05 flash system blob
then the tablet freeze but the cmd is say success
but i try only one or two time
at this moment i only able to boot in to fastboot by hard reset and the APX
in APX mode the pc didnt recognize the driver
also i try couple at fastboot mode in tablet i hit the upper vol at RCK
it return message as follow
bootloader fail
code is 0X 00000000
i know it is not in brick
the system has no os to boot too
and the tablet has no wait to write anything into it
but i will try the method you have instruct tonight at see any chance
hope no need to send back to the shop to fix it

Sheena0220 said:
thx for the instruction
i will try it tonight
i think i see somewhere before and try it before with the code in the cmd
at fastboot
while the tablet still flashing with the 3 icon (rck, android, and wipe data)
in pc i type this code as follow
fastboot device
come out the sn #
fastboot -i 0x0b05 flash system blob
then the tablet freeze but the cmd is say success
but i try only one or two time
at this moment i only able to boot in to fastboot by hard reset and the APX
in APX mode the pc didnt recognize the driver
also i try couple at fastboot mode in tablet i hit the upper vol at RCK
it return message as follow
bootloader fail
code is 0X 00000000
i know it is not in brick
the system has no os to boot too
and the tablet has no wait to write anything into it
but i will try the method you have instruct tonight at see any chance
hope no need to send back to the shop to fix it
Click to expand...
Click to collapse
i had try the method
tablet freeze as soon as i start the code of
fastboot -i 0x0B05 flash system blob
i do see in cmd say finish and ok
i try code of fastboot -i 0x0B05 reboot
tablet didnt response
try fastboot devices
come back will
??????????????????? list
i just dont know what to do
it freeze all the time as i write something into tablet

Sheena0220 said:
i had try the method
tablet freeze as soon as i start the code of
fastboot -i 0x0B05 flash system blob
i do see in cmd say finish and ok
i try code of fastboot -i 0x0B05 reboot
tablet didnt response
try fastboot devices
come back will
??????????????????? list
i just dont know what to do
it freeze all the time as i write something into tablet
Click to expand...
Click to collapse
which firmware did you download? have you tried flashing a recovery img like twrp?

crazynitro said:
which firmware did you download? have you tried flashing a recovery img like twrp?
Click to expand...
Click to collapse
i use us one and get the blob out
i think i got what you mean now
i have to have the right blob before i can get the flash work if not i will freeze it
the problem is i cant even boot to android
so i have no clue on will firmware i using
all i can see from now is at the fastboot that only is us ...10.6....
is that the firmware i have to flash if do so i will try
i cant even flash the twrp into the tablet
i try blob and img
it wont work
i try the version is the 2.5......4.2.blob or img
it just got no luck at all
thx thx thx

Sounds like you flashed the incorrect twrp for your bootloader, flashing a non-4.2 twrp on a 4.2 bootloader can cause a fastboot flash brick.
Here's a little info about the changes from a 4.1 to a 4.2 bootloader as there have been quite a few bricks here over the last few months.
Still not sure of the exact issue here but seems there was a change in some or all of the partition tables with the 4.2 bootloaders for both 10.6.1.8 & 10.6.1.15.3 and as a result after updating to 4.2 and then flashing TWRP (non-4.2 version) or CWM recovery would give the following outcome when you boot to recovery.
TWRP would ask for a password on boot, you can hit cancel but are left not being able to mount any partition including external apart from possible system.
CWM was the same, unable to mount any partition.
The device will now also likely boot strait to recovery, and if you have not wiped system you will now have to cold boot andriod from now on.
Now the bad part - In about 90% of cases flashing TWRP (non-4.2 version) or CWM would also result in a fastboot flash brick, meaning that some other fastboot commands will work ok, however any fastboot flash command will look to go ok on the command prompt but you will no longer get the blue progress bar on the tablet and nothing will flash to the tablet. So your either stuck with the current os and have to cold boot or if you wiped your system your just stuck.
Only solution so far to this issue is to replace your motherboard. Here's a thread on the issue http://forum.xda-developers.com/show....php?t=2179874
And thus the -4.2 versions of TWRP were made for the 4.2 bootloaders
JB 4.2 bootloaders require the -4.2 versions of twrp
- JB 4.2.1 - 10.6.1.8 = twrp 2.4.4.0-4.2
- JB 4.2.1 - 10.6.1.15.3 = twrp 2.5.0.0-4.2
So if you do not get the blue progress bar on tablet when running a fastboot flash command then sorry to say you have the fastboot flash brick.
There are many many threads/posts on this issue with the above info but still people are not reading, bricking there tablets and creating duplicate upon duplicate threads on this issue, so please look through the threads first, read, read and read some more and if still not sure ask as many questions as you need.
Hope this helps explain what has happened and why the fastboot flash command freezes your tablet.

ok thx for everyone that give a great advice
i just change a new motherbooard
and now the tablet is in a unroot and unlock
i just want a instruction on how to do the unlock and root correctly
i read so many post
i just confuse
im in a android 4.2.1
and us 10.6.1.15.3
any suggestion before i got mess up

TF300T 4.2 TWRP Error

Hi XDA,
I am a complete noob, and this is my first time posting, so bear with me.
Some time ago I rooted and unlocked my TF300 with SuperSu. Recently I wanted to upgrade to 4.4 kitkat. However, my Tablet was stuck at Andriod 4.1 because of the the unlock.
I went to manually update my TF via the Asus website. I installed the 10.6.1.8 using my TWRP 2.5, and Oem 4.1 OS. Installation worked just fine. After install, I booted up and I had 4.2 with everything working correctly.
Next step was to install TWRP 2.7.0.1. I reset my TF and went into RCK to see something went wrong when updating.
My TWRP will not load, and I get the Android on his back with the red triangle when I try to enter RCK.
Thanks in advance!!

I managed to install 10.6.1.27, but it did not change anything with my boot loader.
I downloaded motochopper, but that didn't seem to work, just told me my abt was out of date. SuperSu isn't working now either, "No Binary, There is a problem."
How do I install TWRP 2.7 with no boot loader? Please help.

TallMilk said:
I managed to install 10.6.1.27, but it did not change anything with my boot loader.
I downloaded motochopper, but that didn't seem to work, just told me my abt was out of date. SuperSu isn't working now either, "No Binary, There is a problem."
How do I install TWRP 2.7 with no boot loader? Please help.
Click to expand...
Click to collapse
Most people just install TWRP via fastboot like
Code:
fastboot -i 0x0B05 flash recovery twrp.blob
You could try using other root methods, like Framaroot or Kingo. I think Kingo was reported to work on the latest stock version.

cmendonc2 said:
Most people just install TWRP via fastboot like
Code:
fastboot -i 0x0B05 flash recovery twrp.blob
You could try using other root methods, like Framaroot or Kingo. I think Kingo was reported to work on the latest stock version.
Click to expand...
Click to collapse
I will look into that, but I am pretty sure I was already rooted, unless losing my boot loader means I am no longer rooted.
Another thing, I can't find a twrp.blob for 2.7, just a zip. I have one for 2.5, but that is useless because I already have 4.2. I also have not been able to find a working link to fastboot.
If anyone could give me a link to the fastboot or a link to a tutorial, that would be amazing. I have done my research, but all the lingo and different methods can be mind bending.
Thanks

TallMilk said:
I will look into that, but I am pretty sure I was already rooted, unless losing my boot loader means I am no longer rooted.
Another thing, I can't find a twrp.blob for 2.7, just a zip. I have one for 2.5, but that is useless because I already have 4.2. I also have not been able to find a working link to fastboot.
If anyone could give me a link to the fastboot or a link to a tutorial, that would be amazing. I have done my research, but all the lingo and different methods can be mind bending.
Thanks
Click to expand...
Click to collapse
You can get the img (which substitutes as a blob) from extracting it from the TWRP 2.7 zip file.
1) You will need ADB and fastboot for this: http://forum.xda-developers.com/showthread.php?p=42407269. I would suggest keeping the tablet at least at 50% battery.
2) Install Naked Drivers. This may be optional for you. If you can proceed to the next step without, you won't need it.
3) Enter fastboot by rebooting and holding down the power button. TF300 enters fastboot automatically since this is 4.2 BL.
4) Next we need to enter a command. In side the ADB folder, hold shift and right click. Then select Open command window here.
first check to make sure the device is connected:
Code:
fastboot devices
The device serial number should be listed.
enter command:
Code:
fastboot flash recovery twrp.img -i 0x0b05
Blue bar on device will fill. Be patient.
5) Reboot the Device back into Android. This is an important step.
6.) Go back into TWRP and install what you want.

You are amazing. I will give it a try tonight and report back!

cmendonc2 said:
You can get the img (which substitutes as a blob) from extracting it from the TWRP 2.7 zip file.
1) You will need ADB and fastboot for this: http://forum.xda-developers.com/showthread.php?p=42407269. I would suggest keeping the tablet at least at 50% battery.
2) Install Naked Drivers. This may be optional for you. If you can proceed to the next step without, you won't need it.
3) Enter fastboot by rebooting and holding down the power button. TF300 enters fastboot automatically since this is 4.2 BL.
4) Next we need to enter a command. In side the ADB folder, hold shift and right click. Then select Open command window here.
first check to make sure the device is connected:
Code:
fastboot devices
The device serial number should be listed.
enter command:
Code:
fastboot flash recovery twrp.img -i 0x0b05
Blue bar on device will fill. Be patient.
5) Reboot the Device back into Android. This is an important step.
6.) Go back into TWRP and install what you want.
Click to expand...
Click to collapse
Installed adb fastboot. However, my device does not automatically go into fastboot, I still have to hold down the volume key.
Once I am in fastboot usb (with the 3 icons), I fastboot successfully and get the serial number, then when I type the 'fastboot flash recovery twrp.img -i 0x0b05' command I get this error: cannot load 'twrp.img' : No error
I am attemping to use the 2.7.0.1 twrp from the 4.4.2 page. I have extracted the recovery.img (tried renaming to twrp and left it the same) and placed it in the root of both my external and internal sd.
I have now tried it with .zips .img .blob and I receive the same error everytime. Not sure what I am doing wrong now.

TallMilk said:
Installed adb fastboot. However, my device does not automatically go into fastboot, I still have to hold down the volume key.
Once I am in fastboot usb (with the 3 icons), I fastboot successfully and get the serial number, then when I type the 'fastboot flash recovery twrp.img -i 0x0b05' command I get this error: cannot load 'twrp.img' : No error
I am attemping to use the 2.7.0.1 twrp from the 4.4.2 page. I have extracted the recovery.img (tried renaming to twrp and left it the same) and placed it in the root of both my external and internal sd.
I have now tried it with .zips .img .blob and I receive the same error everytime. Not sure what I am doing wrong now.
Click to expand...
Click to collapse
Put the twrp.img into your ADB folder, where you installed it. Then run the next command.

cmendonc2 said:
Put the twrp.img into your ADB folder, where you installed it. Then run the next command.
Click to expand...
Click to collapse
Awesome! Worked like a charm. twrp 2.7.0.1 installed perfectly.
Then I tried to flash the cyanogenmod. Said it installed fine, but it just gets stuck on the loading screen...

I am trying to do exactly what TallMilk is doing...put Cyanogenmod on my tablet. It is my understanding that I have to unlock my bootloader though? Which I have tried doing a million different ways with the Asus Unlock tool which always gives me an error.
If I follow the instructions posted above I will be able to flash Cyanogenmod without unlocking my bootloader?

SilentSpartan said:
I am trying to do exactly what TallMilk is doing...put Cyanogenmod on my tablet. It is my understanding that I have to unlock my bootloader though? Which I have tried doing a million different ways with the Asus Unlock tool which always gives me an error.
If I follow the instructions posted above I will be able to flash Cyanogenmod without unlocking my bootloader?
Click to expand...
Click to collapse
Finally got it to work. I had to do a wipe first, read about old roms interfering with new installations.
SilentSpartan, I used SuperSU last year to root and unlock my tablet when it was still a 4.0 android to flash to 4.1. This recent update was from 2.5 TWRP on a rooted device running 4.2. When I installed 4.2, it blew away my TWRP, and I had to flash the new TWRP 2.7.0.1.
That flash from OEM fastboot to TWRP 2.7.0.1 is what I needed help with.

TallMilk said:
Finally got it to work. I had to do a wipe first, read about old roms interfering with new installations.
SilentSpartan, I used SuperSU last year to root and unlock my tablet when it was still a 4.0 android to flash to 4.1. This recent update was from 2.5 TWRP on a rooted device running 4.2. When I installed 4.2, it blew away my TWRP, and I had to flash the new TWRP 2.7.0.1.
That flash from OEM fastboot to TWRP 2.7.0.1 is what I needed help with.
Click to expand...
Click to collapse
Damn, so I'm screwed. Why does Asus have to such so much...? You can no longer unlock afaik.

SilentSpartan said:
I am trying to do exactly what TallMilk is doing...put Cyanogenmod on my tablet. It is my understanding that I have to unlock my bootloader though? Which I have tried doing a million different ways with the Asus Unlock tool which always gives me an error.
If I follow the instructions posted above I will be able to flash Cyanogenmod without unlocking my bootloader?
Click to expand...
Click to collapse
You're going to have to unlock no matter what. Did you try both v7 and v8 of the unlocker and calling Asus Support to tell them to put your serial number back into the database (get a manager)?

cmendonc2 said:
You're going to have to unlock no matter what. Did you try both v7 and v8 of the unlocker and calling Asus Support to tell them to put your serial number back into the database (get a manager)?
Click to expand...
Click to collapse
I've tried every firmware and unlock tool combination. Nothing works. I sent them an email a day ago. Depending on there response, maybe I'll try calling. I'm so fed up with this tablet, I'm about to throw it out my window. $400 POS. :good:

SilentSpartan said:
I've tried every firmware and unlock tool combination. Nothing works. I sent them an email a day ago. Depending on there response, maybe I'll try calling. I'm so fed up with this tablet, I'm about to throw it out my window. $400 POS. :good:
Click to expand...
Click to collapse
Did you ever get your tablet fixed? I am having some problems myself after a miserable m9 update.

[SOLVED] Tryin to flash tablet back to default, fastboot commands freezes computer...

Hi. I'm trying to flash my TF300T to the latest stock ROM. I'm currently on 4.2.1 and bootloader 10.6.1.15.3. Reason being i can't flash TWRP 2.8+ to install lollipop because i get splitscreen issue, so i'm trying to get the latest bootloader by getting the official one...
Ok, now to the problem. Fastboot is setup and working properly. ADB commands work, fastboot commands work.
Problem is, when i try and flash using this command "fastboot -i 0x0B05 flash system blob" (i have placed the blob file in the fastboot directory), it renders my computer practically useless, in other words everything is super slow. In CMD after entering the command nothing happens. It's almost like it's working insanely hard, yet nothing is happening. The first time i let it go on for about 30 mins because i didn't want to interrupt it if it was flashing, but i decided to hard shutdown my computer. Nothing had been done and the tablet turned back on as normal
Any help would be great...

grimsonfart said:
Hi. I'm trying to flash my TF300T to the latest stock ROM. I'm currently on 4.2.1 and bootloader 10.6.1.15.3. Reason being i can't flash TWRP 2.8+ to install lollipop because i get splitscreen issue, so i'm trying to get the latest bootloader by getting the official one...
Ok, now to the problem. Fastboot is setup and working properly. ADB commands work, fastboot commands work.
Problem is, when i try and flash using this command "fastboot -i 0x0B05 flash system blob" (i have placed the blob file in the fastboot directory), it renders my computer practically useless, in other words everything is super slow. In CMD after entering the command nothing happens. It's almost like it's working insanely hard, yet nothing is happening. The first time i let it go on for about 30 mins because i didn't want to interrupt it if it was flashing, but i decided to hard shutdown my computer. Nothing had been done and the tablet turned back on as normal
Any help would be great...
Click to expand...
Click to collapse
Wrong command!
You can't flash whole ROM blob on 'system' (i.e. OS) partition because ROM blob contains bootloader, partition table, recovery, kernel, system and userdata, which are to be flashed to other partitions.
Therefore our Transformers have a 'ramp-up' partition called 'staging'. On reboot bootloader flashes the 'sub'-blobs of blob (blob.EBT, blob.SOS, blob.LNX, blob.PT, blob.USR) to their respective partition.
Use:
Code:
fastboot -i 0x0b05 flash [b]staging[/b] blob[enter]
fastboot -i 0x0b05 reboot [enter]

Really?? you see, i have been following a few tutroials on doing this on this tablet, and all of them gave me that command. Thanks a lot anyways, will try

grimsonfart said:
Really?? you see, i have been following a few tutroials on doing this on this tablet, and all of them gave me that command. Thanks a lot anyways, will try
Click to expand...
Click to collapse
This should work! However it will last along time. When tab reboots, you will see a blue progression bar, which sometimes seems to freeze. Let tab restart by itself.
If you don't succed, you might have a corrupt blob, either by downloading or by unzipping with an outdated winrar (suffered that myself).

Well, no luck first time. Exactly the same thing happened when using that command in CMD. Not sure if it's a problem with my PC or what... Going to re-download the files from ASUS.
Not sure what you mean with that blue progression bar? (really long time since i have messed around with my tablet) You mean on the tablet? When i'm in fastboot and trying to flash nothing happens, i see the same rck, android, whipe data and all the writings on top left is the same.
I am doing this one a really old computer though (no access to mine atm). It's windows XP SP3, 1gb ram and intel celeron 1.8ghz i think. Not sure if it has anything to do with this but anyways.

grimsonfart said:
Not sure what you mean with that blue progression bar? (really long time since i have messed around with my tablet) You mean on the tablet? When i'm in fastboot and trying to flash nothing happens, i see the same rck, android, whipe data and all the writings on top left is the same.
Click to expand...
Click to collapse
When you flash to staging, bootloader copies blobs to their partitions after reboot, while this happens, a blue progression bar is visible on ASUS Screen not on bootloader screen.
As you report it, you are probably not in fastboot mode.
Try to follow:
1. Press power + vol down -> bootloader screen appears with icon RCK blinking. Now you are in fasboot mode.
2. Connect tb to pc; tab should show up in Win's device manager as ASUS fastboot device(o.s.). If warning sign appears or 'unknown device' label, install proper drivers.
3. Open terminal window with admin permissions in fastboot folder.
4. Type
Code:
fastboot devices [enter]
-> device should be shown; if not: type
Code:
fastboot -i 0x0b05 reboot [enter]
tab should now reboot into OS; if not, fastboot doesn't work.
5. Try procedures 1. to 4. with every single USB port available. If no success try different pc (normally WINXP is no deal breaker, Win 8.1 sometimes might be).
6. Report.

It worked now . I just had to wait for about 20 minutes then it started sending "staging". Aftr that it all went fine. I guess it was just the computer being a ****.
Succesfully booted into android too. Everything working fine. +1 for your help anyways man. Cheers

grimsonfart said:
It worked now . I just had to wait for about 20 minutes then it started sending "staging". Aftr that it all went fine. I guess it was just the computer being a ****.
Succesfully booted into android too. Everything working fine. +1 for your help anyways man. Cheers
Click to expand...
Click to collapse
Glad to be of any help.
You might add to your OP tag [Solved]

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?
Click to expand...
Click to collapse
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).
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
Care to share the batch file?

Weird problem with my tf300t

Hello there. I am writing here because my tablet which i didn't use for a long long (lend it to my grandma) time caught my attention. I wanted to install some custom rom and recovery but when i go to bootloader, I can see 4 things to choose and when i choose RCK or USB the device stops working. Adb works perfectly fine but fastboot not at all. Im attaching photos of what it looks like and all system info You may need in order to help me. On boot logo it says that the device is unlocked.
Also, Happy Easter

Deviss said:
Hello there. I am writing here because my tablet which i didn't use for a long long (lend it to my grandma) time caught my attention. I wanted to install some custom rom and recovery but when i go to bootloader, I can see 4 things to choose and when i choose RCK or USB the device stops working. Adb works perfectly fine but fastboot not at all. Im attaching photos of what it looks like and all system info You may need in order to help me. On boot logo it says that the device is unlocked.
Also, Happy Easter
Click to expand...
Click to collapse
First of all you should get your tablet on the last Asus update on Android 4.2 Jell Bean. That means you must download the latest Asus firmware for TF 300T from here:
https://www.asus.com/Tablets/ASUS_Transformer_Pad_TF300T/HelpDesk_BIOS/
Generally you may install it manually. After download unzip the zip file once. Then copy the "blob" file into the intern memory of your tablet. After rebooting the device the firmware is gonna to being installed automatically. This might be the first and most important step to prepare your device for flashing a custom rom of your choice.

Thanks for response,but after rebooting the device with blob file inserted, system launched normally and no updates procceded :/
Edit: now that I think of that, it looks like i don't have recovery because when i enter it from bootloader all i see is red triangle with "dead robot"

Deviss said:
Thanks for response,but after rebooting the device with blob file inserted, system launched normally and no updates procceded :/
Click to expand...
Click to collapse
Go ahead and try to flash the blob file.
If you don't have, you need „Minimal ADB and Fastboot“, download it from the Internet. The USB driver must be installed on your PC.
Install "Minimal ADB and Fastboot". Then put the blob file in your fastboot folder. Open cmd on your PC as administrator and type: "-i 0x0B05 flash staging blob" without " ".
Let it run. It seems that nothing happens. The whole thing can take up to 20 Minutes, so just stay calm and wait till it’s finished.

Well that's not gonna happen since as i stated in the topic i don't have access to the fastboot option(USB Icon in bootloader). when i pick the option from bootloader it just freezes and and stays like that frever untill i manually pinch the reset button with a needle, also the device is not listed in the command "fastboot devices". I will try running fastboot flash overnight, maybe then it will work...

Deviss said:
Well that's not gonna happen since as i stated in the topic i don't have access to the fastboot option(USB Icon in bootloader). when i pick the option from bootloader it just freezes and and stays like that frever untill i manually pinch the reset button with a needle, also the device is not listed in the command "fastboot devices". I will try running fastboot flash overnight, maybe then it will work...
Click to expand...
Click to collapse
I'm sorry, but I cannot understand what you are doing with the icons.
When you start your device with "power on" and "volume down" together you will reach the fastboot modus automatically shown at your third screenshot. That's it!
There is no need to touch any icon. Keep in mind never ever use the wipe icon. In that case your device gets bricked harshly.