I'm curious about this as well, as I've seen lots of instructions on how to clone the current/running OS to a memory card from the tablet itself, but not a lot of information on how to actually do a full out "device copy" from one tablet to another; and if it's possible to do straight over the USB connection that would be even better of course... I'm in the same type of situation where I've got two tablets (both N800s), but the one that I use all the time has a damaged USB port (long story) and I'd like to just replicate my current OS and installed apps/etc to the new one; I assume backing it up using something like tar or dd would be straight forward, but writing that back to the new tablet would be the problem since I'm sure there'd be all kinds of errors and problems trying to overwrite files that were in use by the OS...