Does this work with any save file? I did something like this a while ago based on the same post. I got it to upload save files just fine off of a new game (demonstrated here
), but I ran into a roadblock when it came to downloading save files. The RAM address used for the stack overflow is in the middle of the game's flag data, so a lot of the time I'd randomly get an instruction that hung the CPU. Using a new game guaranteed that most of the flag data was 00, so it just nop'd into the injected code.