G6 lite has no cheat support (unless you use 3d party tools to patch the cheat to the rom) and has no support anymore. Although I haven't had any games yet that did not work.
The G6 lite also only is 4gigabit big! You can only fit 4 full size nds roms on it!
You'd better seek for a card with minisd support so you can extend it to fit much more roms.