Hi! I want to install Linux on my iBook, and I would like to know if my firmware version is up to date. But I haven't found any information on Google -or Apple's website- about this. The Open Firmware welcome message says: "Apple PowerBook4,3 4.5.2f2 BootROM built on 10/17/02 at 14:33:26". So it seems that my firmware version is 4.5.2f2. Is there any firmware version for my machine newer than this? And, if so, where could I find it? Thank you very much!