Originally Posted by KamileonX
My questions are:
a) Is it worth upgrading the OS?
b) where can I find release notes on the difference between the two versions
c) if I do upgrade, do I have to back up my files/apps (i.e. does upgrading the OS wipe the device)?
a) I would recommend upgrading from 4.0.2 to 4.1.
b) Probably not. RIM provides the release notes to the carriers but only Cingular has ever made any public.
c) If you do the upgrade from Desktop Manager you have an option to automatically backup and restore the data on the device. FYI, this is the default behavior.