Q:

How can I root my Lenovo Thinkpad Tablet?

Lenovo doesn't provide updates for the Thinkpad Tablet any more. I'd like to install a custom ROM and therefore need root.
How can I root my Lenovo Thinkpad Tablet?

A:

The method "debugfs automated root" works for the latest official ROM of the Thinkpad Tablet. Like most other root methods, you need to have the Android SDK (or at least adb) installed and must be able to connect adb to your Lenovo Thinkpad (Enable debug mode).
Linux Users

Download the exploit from the XDA Post.
unzip DebugfsRoot_Generic_v2.3.zip
adb push debugfs /data/local/
adb push su /data/local/
adb push debugfsinput /data/local/
adb shell mv /data/local/tmp /data/local/tmp.bak
adb shell ln -s /dev/block/mmcblk0p3 /data/local/tmp
adb reboot
adb shell chmod 777 /data/local/debugfs
Now run the exploit: adb shell "/data/local/debugfs -w /dev/block/mmcblk0p3 < /data/local/debugfsinput"
Cleanup: adb shell rm /data/local/tmp && adb shell mv /data/local/tmp.bak /data/local/tmp
Install superuser: adb install Superuser.apk

Windows
Just run the provided RootDebugfs.bat

