[wmdunn]

Backing up the complete system won't work ... too many differences between 6.1 and 6.5. Your best best is to do like everyone has suggested, back up your contacts, emails, etc ... then install your programs and reg edits by hand. Seriously, you might want to learn Sashimi, in order to make your future rom changes less painful. On a side note, I use SPB to back-up my current rom, just in case something goes wrong, or if I try a different custom rom, and decide to go back. In which case, always 1) re-flash "shipped" 2) flash custom rom 3) and lastly, apply the back-up.