[Transformer TF300T General] MAWMN:
Hello,

I am having a problem in updating my ASUS TF300T with twrp-3.6.2_9-0. as listed in the GUIDE / TUTORIAL in the Top of this thread..

This is what is happening ([Win10] Command prompt [administrator]) and with the [naked] drivers succesfully installed:

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot devices

015d46d927481e13 fastboot

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0b05 flash recovery twrp-3.6.2_9-0-tf300t.img

target didn't report max-download-size

sending 'recovery' (8174 KB)...

FAILED (command write failed (No error))

<== What is happening

finished. total time: 0.018s

Question WHY can't I write ???

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0b05 reboot-bootloader

rebooting into bootloader...

FAILED (command write failed (No error))

<== What is happening

finished. total time: 0.011s

Question WHY can't I write ???

At this moment my ASUS device is Stuck...Displaying on the screen :

Booting failed

UNRECOVERABLE BOOTLOADER (0x00000000)

***************************************************************************

Well, after more information gathering on the internet and searching and reading hundereds of websites, a little step could be made ???

results :

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot devices

015d46d927481e13 fastboot

*****

<== found in https://www.minitool.com/news/reboot-to-bootloader.html

Fastboot flashing unlock (for phones produced in 2015 and later)

Fastboot oem unlock (for phones produced in 2014 and former)

*****

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>Fastboot oem unlock

...

OKAY [ 0.020s] <== Seems to have worked...

finished. total time: 0.021s

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0b05 flash recovery twrp-3.6.2_9-0-tf300t.img

target didn't report max-download-size

sending 'recovery' (8174 KB)...

OKAY [ 1.648s]

writing 'recovery'...

OKAY [ 0.334s] <== Seems to have worked now...

finished. total time: 1.982s

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0b05 reboot-bootloader

rebooting into bootloader...

FAILED (command write failed (No error)) <== Still not working...

finished. total time: 0.003s

Question WHY can't I write ???

At this moment my ASUS device STILL is Stuck...

Displaying on the screen :

Booting failed

UNRECOVERABLE BOOTLOADER (0x00000000)

***************************************************************************

After more information gathering on the internet and searching I finally found the answer and was able to solve the problems and get my ASUS TF300T working again..

results :

**********************************************************

Get the Right file from the ASUS Support / download site (Firmware)..

https://www.asus.com/my/support/download-center/

Extract the Zip-File

Next, Follow description #1 in :

https://xdaforums.com/t/softbrick-possible-solution-for-you.2399698/#post-44463590

**********************************************************

Install of the latest original ASUS Firmware...

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0B05 flash system blob

target didn't report max-download-size

erasing 'system'...

OKAY [ 0.125s]

sending 'system' (800931 KB)...

OKAY [149.523s]

writing 'system'...

OKAY [120.259s]

finished. total time: 269.907s

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0B05 reboot

Rebooting...

finished. total time: 0.019s

The Tablet is Finally working again with the original ASUS Software.....

Now change to twrp software.....As described in the GUIDE....

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot devices

015d46d927481e13 fastboot

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0b05 flash recovery twrp-3.6.2_9-0-tf300t.img

All OKAY....etc.etc.etc

C:\Tools\ASUS Tablet TF300T [Sept 2022]\Sept. 2022\djibe pack>fastboot -i 0x0b05 reboot-bootloader

All OKAY....etc.etc.etc

and confirm with Volume+ to load RCK (recovery), Rebooting....,

it is now TWRP 3.6.2_9-0

SUCCESS -- SUCCESS -- SUCCESS -- SUCCESS