It reloads the memory of the zaurus. You can save yours before you convert it , or download one.
To convert it, goto the how to\'s and follow the link, download the scrip to do it, install the script, done.
There is also on on doing a nand backup and restore. But that is where you can brick you zaurus.
I\'ve had mine for a month and have tried every OS by now, if you\'re a linux person allready pdaXrom is my favorite.
cory