Actually, you can pick which TOS to use from the picker; ie: If you hit A/B on a file named whatever.IMG, then it will be used as the TOS when booting; It defaults to TOS.IMG, but you can override this. So ptu a 1.02 TOS.IMG in place, and you can put a TOS104.IMG (say) in there as well, in case you need it sometime.
(Palm version can't switch TOSes live, though)
It shoudl run very well with 1, 1.02, or 1.04; some games are speedier than others; ie: MAth intensive games run much slower.
jeff