Nope.. transferring from an A500 to an A500+ should be painless.. I used an HD+
on an A500 for years, if your A500 is already running WB2.04 then you won't
notice any difference at all that's what A500+'s were shipped with in the UK..
if your moving from 1.3 to 2.04 on the other hand you will enjoy a much nicer
operating system..
Steve