User's guide: http://uzebox.org/wiki/User_Guide
"Blue" menu: http://uzebox.org/forums/viewtopic.php?f=3&t=520
"Brown" menu: http://uzebox.org/forums/viewtopic.php?f=3&t=9405
There are two versions of game loader. One called "blue": Bootloader_0_4_5.hex and another called "brown": Bootloader5.hex
Brown supports SDHC cards, also files can be fragmented.
Connecting cheap NES/SNES pad: