I am still running A/S 3.7.1 with my X50V (WM2K3.2). Is there any advantage to "upgrading" to A/S 4.2?
UPDATE: I went ahead and installed ActiveSync V4.2. It seems to be OK so far. I did the FireWall modifications as described before attempting to sync the first time. I guess the advantage is that I can go ahead and try to install the .Net CF V2 now without having to deal with CABs and RAR files and the like. Hopefully, it will let me install to BIS...
UPDATE TO UPDATE: And indeed .Net CF V2
did install to BIS!
UPDATE TO UPDATE TO UPDATE: More on how upgrading went for me
in this thread.