I've been playing Guitar Hero World Tour via Gamma with just the guitar. Last night my friend brought over his guitar and a Logitech USB microphone. We noticed that both GHWT and GH Metallica would not detect the USB microphone. Mic works fine on his Wii (SoftMii) but it would not detect on mine. I searched through the forums and found that this is due to either a bug in cIOS36 rev10 or that I need to install IOS37 (which I thought I already installed) My Wii is at 3.2U and I thought I had all of the necessary cIOS files installed already. The game plays fine otherwise. Has anybody else had this problem?