Did you install CWM on your tablet?
If No, run the PERI tool on your PC to install CWM: http://www.transformerforums.com/for...-firmware.html
Once CWM is installed, you will need to download the latest firmware from the Asus support site for the WW firmware: ASUS - Eee- ASUS Eee Pad Transformer TF101
Unzip the file ONE TIME (it will still be a .zip). Place the file where CWM can see it (for newer versions, it will probably be on the internal memory). If using a 3.X version of CWM, it will most likely be on a microSD formatted for FAT32.
Boot to CWM (Hold VOL DOWN and POWER for 12-15 seconds until you see white text on the screen) release both buttons, tap VOL UP immediately.
Select wipe cache (you can use the vol buttons to navigate, power/lock to select, or some versions support touch)
Go to Advanced - Wipe Davlik Cache
Back at main menu, select Install Zip from SD card. Choose your zip and install.
Now you should be back to 100% stock, latest version of firmware ready for OTA updates. CWM will also be replaced by stock recovery.
There may be other ways to do it, but I know this one has worked for many users in the past.