I've had a Google but can only seem to find answers for GBA games in slot 2. I'm wondering if the cheat function in a M3i Zero or a homebrew app on it can be used to enter cheats for a game, and then swap it out and put in a physical game for the cheats to work on? I figure it's unlikely but you don't know unless you ask! It's either that or using cheats on a ROM and then the labourious task of transferring the save game from the ROM to the physical card (for things like maxing out levels and money once I've finished a game so it's all '100%'). Or buy an Action Replay or similar... Info appreciated!