Yeah I hear ya!! I wanted to chuck it yesterday too except I didn't want to ruin the new skin I just put on it.

I wasted a whole day on the dum thing. Save yourself the headache, don't even connect it when you have the software on the computer open. It just auto syncs period. And the auto sync will make the device the same as the computer which means deleting everything else on the device except what it's supposed to sync with. Funny enough though it left my collections intact. No books in them, but it didn't delete the collections I made manually on the device.
The sad thing is that after I formatted the device from the hell I went through the first time, I had no issues with the device. None. It worked perfectly. After doing the update through the software and having to install and re-sort all my flipping books I started getting the shut down error message again. hmm.... I'm hoping it was just while I was sorting. I still have my 350 so I had to go to it to get bookmarks on books in progress. I have too many on the go & forgot where I was with them.
I'll tell ya though, between this and some guy trying to scam me on eBay I'm going to get into drunk knitting today!! LOL

At least if I F it up, I'll know why and have no one else to blame. LOL I have Christmas gifts to make and I'm quickly running out of time. Yesterday was a total waste. I think I need to make myself a hat. I'm going bald from pulling all my hair out!! LOL