Maybe there's a newer one aswell but that's more than I know of.
Dunno if this can solve your problem, it sounds more like it's a stuck PLL but you never know until you tested =) Compability shall be uneffected, you might want to check the env-variables before you flash the board so you can apply it again so the system boots correct boot file etc.
Joined: 24-Aug-2003 Posts: 4405
From: As-sassin-aaate! As-sassin-aaate! Ooh! We forgot the ammunition!
@Tuxedo
To satisfy my curiosity about something, could you run the following simple program in both OS4 and MorphOS on your machine before you fiddle with any hardware/firmware settings?