Meh, I dunno ... I don't have access to a Pearl - however, if anyone who does have one would like to go ahead and wipe out all the service books other than the Y!M service book and create a backup file, I would be more than happy to post it (hint, hint). Of course, credit will be given where credit is due. In the meantime, maybe try the 4.1.x service book? Dunno if it'll work, but you could try.