Got my 4.3u modded and working great. Tried the whole thing on my sisters 4.2u with the exception of using the disc exploits, I used the bannerbomb method for the second one, different result. When i tried to back up discs using CFG usb loader, as soon as I press A it would hang or freeze. It would play the games backed up from the first wii but just wouldn't back up any itself. Tried using the updated version of CFG but to no avail.
Would an update of the cios solves this?