According to my experience and everything I've ever heard, your worries are unnecessary. And as for re-trying firmware update, you can try it if you want, if it's not needed the updater will just tell you that. On Mon, 25 Aug 2008, Peter Nevett wrote: . . . > Thanks for all the help. I have checked the firmware and it seems > up-to-date (4.1.7). Is there any point in re-updating it? > I am still a bit worried that following Tom's procedure above might > leave me with no OS at all. Is this likely? I have an OS 9 CD from > which the iBook will boot reliably.