[Transformer TF300T General] funnel71:
This is for those on ICS only. If you have upgraded to jellybean, this will not work.

There have been other posts, and this one is nothing new, in fact it's a remake of DebugfsRoot so that author gets all credit. I just made a couple of tweaks to help those that might be having a fuss with it. First, this is assuming you are using a windows PC. I don't work on MACs. Next, make sure you have ADB working properly on your PC. To do this:

Go to your start menu and open a command prompt, usually by typing "cmd" in the run blank.

Type adb

If you don't get a whole heap of feedback of how to use adb returned to you, and instead get an error, you don't have it set right. If you're sure you installed the development kit and you have ADB on your PC, do the following:

FIND IT... and add it to your system path variable. adb.exe comes with the root extract, so if you don't have the kit installed, you can use that instead, but seriously, if you want to root and enjoy this hobby to its fullest, install the android kit. The most common location is "C:\Program Files (x86)\Android\android-sdk-windows\platform-tools" - but hey, get this, did you know the asus sync software available from their site also includes it? I just now found that out haha...

To add whichever absolute path to your system path variable, start menu > control panel > system > advanced system settings > environment variables button > In the system variables window, scroll down to path, click it, click EDIT > move your cursor to the very end and add ; again that's (semi-colon) - you'll see other entries there which show you, just follow the pattern. Remember, you only need to do this if your original attempt at typing adb didn't work. Save your settings, return to that command window, and try adb again, you should have better results this time.

Now then, download the root package here:

https://dl.dropbox.com/u/33560221/DebugfsRoot_v1.8.exe

This is the original software with slight enhancements by me...those enhancements are all to the BAT file, and are as follows:

The EXE file is a self-extracting archive which will extract the contents to C:\tabletroot Please don't change this install location. You'll see why in a moment. the RootDebugfs.bat was edited as follows:

Within each push command, I preceeded the file name with C:\tabletroot so it knows exactly where to find what it needs. I found if you just pushed without it, it didn't like it too much.

Last, after each "wait-for-device" command, I added TIMEOUT 120 This forces the batch file to sleep for 2 minutes allowing plenty of time for your tablet to reboot. I found if you didn't do this, it would try to do the next commands way too soon causing failure. This should give enough time for you to get to your desktop before the next command is issued. If you find it's too long and you're ready to go, just press a key and that will kill the clock. If not long enough, edit the batch file with any text editor, and increase the timeout time.

All other files are what was originally found. I didn't update any of the apks or edit any other file than the main batch file. That's it. I used these exact files to root my tf300t on firmware version .30 with no issue of any kind. I hope this helps someone. If you run into trouble, not sure how much help I can be. I'm simply posting exactly what I did. I didn't author anything other than the edits mentioned above. Good luck.