I have an old iBook g4 power pc version 10.5.8 that is not able to download either Limera1n or Greenpoison. Is there a way to JB to 4.1 or do I just have to bite the bullet & buy an Intel mac?
Can you run pwnage tool? My personal bias is to use that over the other tools. You'll need the newest version to do iOS 4.1 You definately shouldn't upgrade just to jailbreak your phone. You could also just get someone with an intel Mac to make you custom firmware with pwnage tool and do an option+restore in iTunes.