Ipod 4Gen Gray - Firmware redo

[radink]

I decided to restore the original firmware from apple by doing a restore via itunes before i install a fresh copy of rockbox. Silly me, I forgot doing this on an ipod requires the power supply to finish the install (which is really lame imo). I have the power cord but it is at home, and im at work. Any ways to get around this? Even my car charger doesn't work.

Thanks.