I already posted this question on wiihacks.com , but I'm not sure anyone would reply so here it goes again.. I was reading somewhere that said something to the extent of depending on your chipset will determine if you will be able to play back up dvds or not. Anyway I checked my chipset via wiidrives.com and it seems I have a GC2R-D2A or a GC2-DMS. Mind you, my Wii is Japanese and it was produced it on 06. I'm also running on a 4.3 system. I'm assuming that since I don't have a new chipset, if I get a modchip I can burn and play backup Japanese version wii games but not American or Pal games, right b/c of the update...?..if anybody with advice about this could reply I would be grateful.