At the moment my Extreme is away on it's holidays - some manufacturing problems that need fixing with a replacement. When I get it back I was thinking of upping the s/w to 4.0.4 (404 - is that a bad omen). The problem I had though was that I never could get my PC talking ADB to the tablet.
The question is - if I still cant get the two to talk ADB is it possible / sensible to :
a) backup the existing ROM so I can go back to it
b) perform the upgrade
c) restore original ROM.
BobC