If you’re the owner of the WiFi US Xoom, you’ll be pleased to know that XDA forum member publicanimal has put together a flashable, no wipe, external storage enabled update file for the 3.1 Honeycomb update.
The XDA member has incorporated a modified version of stachre’s updater-script into the official WiFi 3.1 update from Google. Also added was the kernel and all of the files from bigrushdog’s HC3.1 zip, except for the system.img file, meaning that the the WiFi only software gets installed on your WiFi only Xoom.
The benefit, states the XDA member, is that this does not require a factory data reset and also provides access to the external SD card in the /sdcard/external folder.
If you want to find out more and to download the file, head on over to the forum thread._________