Is it possible to use a DS homebrew to write to a retail cart? I know you can use eepinator to read and write the sav file, and I know you can use NDS Backup FTP to read the ROM, but can you write to the ROM? If not, are there any instructions of the DS cart's pinout so I can use an arduino to write to a DS cart? Is this even possible, or is the ROM stuck once it has been written once? If so is there a way I can get a blank cart?