i was following the directions from the iphone dev team's blog on how to fix the DFU mode in 10.5.6 by dl'ing from Apple and installing the IOUSBFamily-315.4-log.dmg for Mac OS X 10.5.5 Build 9F33. after i installed it and restarted as the directions stated, the machine started to reboot and then had kernal panic on start up. now i can't get back the start up screen. i've tried disk utility and repairing permissions but it hasn't helped. any suggestions on what i can do? other than archiving and installing?