I'm a mac based user, 10.4.10.
I just bought a used 30GB 5th gen iPod with RockBox version r13728-070628. I thought I'd just uninstall RockBox and restore it for use as an original iPod. I have been able to boot in RockBox and the original Apple OS and it charges fine using my old firewire cable but using the USB cable shows no signs of life.
I know the dock connection works because it charges with the firewire. I also have an Alpine receiver in my car that has full iPod integration that works with it fine. The first time I plugged it into my laptop the "Do Not Disconnect" screen came up for a few seconds, the iPod rebooted itself into RockBox and since then it shows no signs of the cable even being connected: no mounting, no charging, nothing.
The RockBox software seems to work fine until I play a song. It plays for a few seconds then I get an error "Undefined Instruction at 03B5210C" and its frozen. Resetting it brings it back to RockBox or, while flipping the Hold button, back into the Apple OS but nothing seems to get it to connect to my laptop. I've tried several other computers too with no luck.
Any ideas?