This whole process will take about 30 minutes to complete and will keep your data intact.
The benefit of this method is that you will not void your warranty, as your bootloader will remain locked. The only way to root your tablet running 9.2.1.21 or 9.4.2.21 WITHOUT unlocking your bootloader, is to downgrade to an older firmware version, get root, upgrade back to the latest firmware version available and restore our root access using OTA Root Keeper. In this tutorial I am going to show you how to root your Asus Transformer TF101 or Asus Transformer Prime TF201, running the latest version of Ice Cream Sandwich (ICS), which at the time of writing is 9.2.1.21 for the TF101 and 9.4.2.21 for the Prime TF201.
