After additional research - the firmware you mentioned is for a Power Mac G4 "Digital Audio" not for any of the Power Mac G4 "QuickSilver's" Quesksilver's require no fireware upgrades and are good for all OS X's including OS X 10.4 (Tiger) as is. Per Apple Support... Rich =========================================== --- "J.M.P.Hissel" <jomph at xs4all.nl> wrote: > On 24-06-2006 16:16, Richard Ramsowr, > r.ramsowr at sbcglobal.net, wrote: > > > and itÕs Boot ROM is version 4.2.5f1. > > You have to update the firmware (Boot ROM) to 4.2.8. > Remember, you have to do this while booted up in OS > 9.x > Success, > > Jo Hissel > > > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4 > > Listmom is trying to clean out his closets! Vintage > Mac and random stuff: > http://search.ebay.com/_W0QQsassZmacguy1984 >