I tried updating to anything, OS2007 OS2008, and about 20 times in a row it told me the update file was corrupted. What do i do?? This thing is basically useless with the 2006 OS. Help

Maybe try doing it on another computer? Maybe it's your computer. Maybe something like Window Washer would clean out a corrupted file that's not going away? Have you at least restarted the computer and then tried again?

And I don't know much about the N770 -- you probably ought to post which Tablet you're using (though I suspect the problem is with your computer, not the NIT).