My Wii is on system menu 4 by official means. Hacked with banner bomb. And running a USB loader. Now about to sort a friends Wii out with a USB loader. Currently their Wii is on a version lower then 4 but is hacked already, using Gamma Loader. My question is do I need to update their console to version 4? Or can I simply install the cIOS and the USB Loader on their version 3.x Wii? Thanks in advance.