Yes latest firmware...
If you play say wii sports right, and you want to quick pause you would press + and then that pause menu shows up with different icons for wii home, controls etc.
Well when I try to boot up any retro game, the first thing is the screen goes black, then this "pause" screen shows up. On the background you can see the nes game image but when you press + to back to the game, the screen turns black.