So i recently got an EZ Flash IV so that i could try using M4G and some other stuff, but some weird things, or maybe they're normal, have been happening.
So the first time i booted it up with a blank SD, it had like a Darth Vader/Star Wars theme on it, so I looked up instructions for how to flash it, and it said to use an updater by holding R while the game boy is turning on. The instructions said that it should show some a kernal update happening. Nothing happened when I did it so I figured it might just already be updated. Then when I flashed the SD using their program, it said it worked, but when i turned on the gameboy it was still the same thing, and when I tried launching the rom it said there was a FAT system error.
Now if anyone can tell me whether this is a cartridge issue or if I'm fucking up it would be greatly appreciated.