Android 3.1 will bring resizable home screen widgets, , Flash Player 10.2, UI refinements, Connectivity for USB accessories, USB host API etc.
adb push <zip name> /sdcard/update.zip
mkdir recovery #it may already exist
echo ‘–update_package=CACHE:/recovery/update.zip’ > command
cat /sdcard/update.zip > update.zip
- Now restart your XOOM and enjoy Android 3.1
Note :- You must have rooted XOOM.
Thanks to Koushik for sharing this….