I have a 3.2U Wii thats working perfectly with USB Loader and my Rockband instruments. Latley I have been using alot of DLC with Guitar Hero 5 and I am coming up against the limitation of 2GBs on the SD Card. I know System 4.0 supports SDHC and a faster transfer speed, but from what I gather the update blocks alot of exploits etc. In the past I had updated the shop channel without updating the whole system. So my questions are: 1) Are Rockband and Guitar Hero capable of accessing the larger SD cards 2) Will it take advantage of the speed increase? 3) Whats the safest/easiest way to get the SD card enhancements without messing up my existing setup?