Im considering to get a Wii where the Disc-drive doesnt work anymore and modding it in such a way, that i can load Wii and GC Games from an SD card or USB-HDD. Now i found that only Firmware versions up to 4.3 appear to be hackable. Are there any newer revisions that i couldnt hack using the letterbox method? Since without a functional disc drive, this hack would appear to be the only viable way to do this. (as far as my extremely limited knowledge of such a thing goes) Is there anything i should look out for? Any Advice or Warnings? Any help would be greatly appreciated. thank you very much in advance.