I kept having to re-do all these steps every few weeks and hence, I decide to blog down the steps in one central location.

Unlocking the TF700T

Download the Unlock Device App from Asus' support site which works for Android 4.0 (I think it works on Android 4.1 as well, I'm not sure).

Booting into Android recovery on Asus Transformer Infinity TF700T

  1. Press Power and Volume  Down at the same time and hold.
  2. Once RCK is seen, press Volume Up.

Installing OpenRecovery - instructions taken from http://teamw.in/project/twrp2/105

You will need adb and fastboot for this method. Download the above file, check the md5, rename to twrp.blob and put the file in the same directory as your fastboot.exe (unless you have /platform-tools in PATH then you can flash from anywhere).  Turn off your device and boot to fastboot (power on while holding volume down, then select the usb icon and hit volume up to confirm). The device will now be in fastboot mode. Plug the device into your computer. Run the following command via the command line:

fastboot -i 0x0B05 flash recovery twrp.blob

Installing su (Getting root)

  1. Boot into OpenRecovery (As above)
  2. Select Install, and select SuperSU
  3. Select Reboot