Item description:

This is a tool for reflashing GBA bootlegs on the DS.

I recommend placing your GBA roms in a directory called "GBA" on the root of your SD-card, as it will be opened by default.

USE AT YOUR OWN RISK!
While I've successfully tested this with about a dozen bootlegs, there's no guarantee that this will work with yours. There's also a chance that this will manage to erase the data, but not flash new data leaving your bootleg in an unplayable state.

If you do run into errors, try cleaning the pins and make sure the cart is inserted properly.