Originally Posted by wetbiker7
Just wanted to through this in here too. This is the video that I watched when I started working on mine. It has a lot of good info as far as installing fastboot and using it. All he needs to do is replace CWM with TWRP and it's commands.
How to: Root ASUS TF300 + CWM Recovery (Works on ALL Firmware) - YouTube
Like I mentioned earlier, my tab is running JB. The ICS bootloader is a little bit different. I wish I could be more help but I'm not up to speed on ICS.
Sounds good man. Yeah we got TWRP flashed so the only hurdle left is finding an ICS rom to get the thing booted. After that, he can do whatever needs to happen so he can accept the OTA and be on official JB. I'm leaning toward recommending the CM9 stable from the Rootz link above. That will be based on ICS and should get him up and running so he can proceed.