[Transformer TF300T Q&A, Help & Troubleshooting] bucket81:
First off I want to thank [MENTION=5123642]lj50036[/MENTION] for his time and most of all his patients in helping me bring my TF300T back to life I can't thank him enough!! His original post on the TF700T is here. Make sure you go thank him!!

You must have the NVFlash generated files from AndroidRoot.Mobi for ICS or JB.

This is what I did and it might not work for your specific situation. I performed this on a

Mint 15 32 bit machine. This is very important (EDIT: This has also been done on Mint 64bit)

; Ubuntu might not work and would not work for me .

My situation:

I had flashed the wrong recovery (TWRP 2.6.3.0). This left me with only being able to boot into a recovery that would not mount anything but it would boot into APX mode.​

What you will end up needing:

blob.bin

unlock-token.img

factory-config.img

bricksafe.img

Also needed:

Fully charged TF300T (Just plug it in, it will charge no matter what...If not, you don’t need my help!!!!)

Asus data cable

Linux Mint 15 (32 bit) PC

Stock firmware blob (from asus's website. Make sure you get the right one) Download

nvflash and wheelie Download

And fastboot for your PC

You might also need TWRP 2.5.0.0 Download

Mint

1) Lets start with Mint 15 (32 bit) Download and how to make a bootable USB. instructions this has got to be one of the easiest OS’s I have installed and setting up dual boot is cake.

2) Once Mint is booted you want to update it, and it’s a little broken but it’s what I did and you will get some updates. Click where the start menu is in windows find the search field and lookup update manager. Run it and download what you can.

3) Extract wheelie and nvflash to your home folder...

Extract your stock firmware in your downloads folder twice...You will see a blob (this is not a .blob file make sure you put that in the name) file rename it boot.blob and move it to your home folder...

Move the above mentioned device specific files to your home folder..

blob.bin

unlock-token.img

factory-config.img

bricksafe.img

nvflash

wheelie

boot.blob (we renamed it in the last step)

4) Next we need to install fastboot, this is straight up Linux voodoo, open terminal and get comfy cause that’s what you’re going to be using. next type

fastboot

it will prompt you with the command to install fastboot.

These inputs and outputs are from lj50036 post on the TF700T and may very from your outputs. I used the processes and it worked for me.

Lets get started

Start your device in APX mode [Power On + Volume Up]. Your tablet screen will remain blank in APX mode....

Bootstrap your device (enter nvFlash mode) while your device is in APX mode using wheelie....

I am going to show you the output of my process

sudo ./wheelie --blob blob.bin

lj50036@cmbroms:~ > sudo ./wheelie --blob blob.bin

OUTPUT

Wheelie 0.1 - Preflight for nvflash.

Copyright (c) 2011-2012 androidroot.mobi

========================================

Waiting for device in APX mode...

[=] Chip UID: 0x15d2bbce2501405

[=] RCM Version: 0x30001

[=] CPU Model: Tegra 3

[+] Sending bootloader...

Sending file: 100 %

[!] Done - your device should now be ready for nvflash

It may shutdown after each command, get back into nvflash with the above steps.....

sudo ./nvflash -r --download 7 unlock-token.img

lj50036@cmbroms:~ > sudo ./nvflash -r --download 7 unlock-token.img

OUTPUT

Nvflash v1.13.87205 started

[resume mode]

sending file: unlock-token.img

/ 8388608/8388608 bytes sent

unlock-token.img sent successfully

sudo ./nvflash -r --download 14 factory-config.img

j50036@cmbroms:~ > sudo ./nvflash -r --download 14 factory-config.img

OUTPUT

Nvflash v1.13.87205 started

[resume mode]

sending file: factory-config.img

/ 5242880/5242880 bytes sent

factory-config.img sent successfully

sudo ./nvflash -r --rawdevicewrite 0 2944 bricksafe.img

lj50036@cmbroms:~ > sudo ./nvflash -r --rawdevicewrite 0 2944 bricksafe.img

OUTPUT

Nvflash v1.13.87205 started

[resume mode]

sending file: bricksafe.img

/ 12058624/12058624 bytes sent

bricksafe.img sent successfully

sudo ./nvflash -r --go

lj50036@cmbroms:~ > sudo ./nvflash -r --go

OUTPUT

Nvflash v1.13.87205 started

[resume mode]

This is where I ran into problems that didn’t work with the TF700T recovery process. I could not boot into Fastboot with the holding the power and the volume down no matter what I did. this is how we got around it.

download the correct .blob from TWRP rename it twrp.blob then run

sudo ./nvflash -r --download 5 twrp.blob

I don't have output for this.

At this point I could boot into the OS, but still not into fastboot. My OS had the option to reboot to download. If you don’t have this option you could try this or this. But the best way is via the buttons.

Run these command in fastboot in this order

The next command is to just verify your computer can see your device

sudo fastboot devices

INPUT

lj50036@cmbroms:~ > sudo fastboot devices

OUTPUT

015d2bbce2501405 fastboot

sudo fastboot erase system

INPUT

lj50036@cmbroms:~ > sudo fastboot erase system

OUTPUT

******** Did you mean to fastboot format this partition?

erasing 'system'...

OKAY [ 2.954s]

finished. total time: 2.954s

sudo fastboot erase recovery

INPUT

lj50036@cmbroms:~ > sudo fastboot erase recovery

OUTPUT

erasing 'recovery'...

OKAY [ 1.945s]

finished. total time: 1.945s

sudo fastboot -w

INPUT

lj50036@cmbroms:~ > sudo fastboot -w

OUTPUT

erasing 'userdata'...

OKAY [ 23.188s]

formatting 'userdata' partition...

Creating filesystem with parameters:

Size: 29618601984

Block size: 4096

Blocks per group: 32768

Inodes per group: 8192

Inode size: 256

Journal blocks: 32768

Label:

Blocks: 7231104

Block groups: 221

Reserved block group size: 1024

Created filesystem with 11/1810432 inodes and 157662/7231104 blocks

sending 'userdata' (139133 KB)...

writing 'userdata'...

OKAY [ 26.358s]

erasing 'cache'...

At this point it just hangs on erasing 'cache'

I just close terminal and open new one, and run the next command

If your tablet hangs just reboot back into fastboot again

sudo fastboot erase boot

INPUT

lj50036@cmbroms:~ > sudo fastboot erase boot

OUTPUT

erasing 'boot'...

OKAY [ 1.209s]

finished. total time: 1.209s

sudo fastboot erase misc

INPUT

lj50036@cmbroms:~ > sudo fastboot erase misc

OUTPUT

erasing 'misc'...

OKAY [ 0.978s]

finished. total time: 0.978s

sudo fastboot erase cache

INPUT

lj50036@cmbroms:~ > sudo fastboot erase cache

OUTPUT

******** Did you mean to fastboot format this partition?

erasing 'cache'...

OKAY [ 2.843s]

finished. total time: 2.843s

sudo fastboot -i 0x0B05 flash system boot.blob

During the sending/writing process of this step you will get the blue bar on your screen.....

INPUT

lj50036@cmbroms:~ > sudo fastboot -i 0x0B05 flash system boot.blob

OUTPUT

erasing 'system'...

OKAY [ 2.339s]

sending 'system' (800927 KB)...

OKAY [133.094s]

writing 'system'...

[OKAY [178.036s]

finished. total time: 313.469s

sudo fastboot -i 0x0B05 reboot

lj50036@cmbroms:~ > sudo fastboot -i 0x0B05 reboot

OUTPUT

rebooting...

finished. total time: 0.020s

You will now be back to stock rom stock bootloader but still unlocked!!!!!!!!!!!!!

Boot fully into rom then you can do whatever you would like!!!!!!!!!!!

Make sure you go thank [MENTION=5123642]lj50036[/MENTION]