Is it possible to create a custom software bundle for a device such as an iPod touch with Pwnagetool on a mac, then transfer the ipsw file from the mac to a pc with something like a usb drive so you could use the custom bundle to jailbreak an iPod with iTunes on the PC? My friend wants me to jailbreak his iPod and i was wondering if this would work or if i would have to use his computer to jailbreak it. Thanks in advance!