Downgrade it with SRT or kffa, it will be pre-rooted. You may need a fastboot cable to do this though if "adb reboot bootloader" doesn't do the trick.
My Wallpaper Fix for KF2, KFHD 7", and KFHD 8.9" is HERE
Please Read the instructions and use the debugger if you run into errors.
My own modified adb drivers for just about all kindles (includes old twrp and cm versions) HERE
Tablet UI Patch for latest CM10.1 build HERE!

Please send complaints to /dev/null