Just looked into this, didn’t realize everdrives were Ukraine based. I will look into the EZ Flash jr for the time being as well as emulation. Hopefully Krikkz can get his family and team out of the country soon, no rush on my end. What they are dealing with goes beyond video games.The usual way is a flash cart, you copy the modified games onto a micro SD card, put it in the flash cart and you can play that on the GBA. Good ones for Game Boy games are EZ Flash Jr or Everdrive, tho I don't know if the latter is available since the guy had to shut up his online shop.