Hi Catskull,
Oh wow, I didn't know. Cool!
I will eventually roll my BennVenn support into the latest firmware release but for now there are two 'forks' in my firmware development. The latest official release is v1.01 (1.02 will be out very soon with updates to the flash writing algo to gain 20% increase in flashing the EMS cart)
The second beta release is for flashing BennVenn carts (BV1.00). To change firmwares you drag the firmware file to the BennVenn drive, and 3 seconds later you are running the new firmware. Likewise for reverting to v1.01.
The biggest difference with BV1.00 is that it presents 4 ROM files and 4 Save files as the BennVenn cart is divided this way. You write to the cart the same way, drag the ROM to the cart (Filenames are structured 1.GB 1.SAV 2.GB 2.SAV etc...)
The enclosure was designed with internal 'posts and sockets' and when connected they cant be separated without snapping the posts. I also use a couple of drops of glue just to be sure.
If I can get hold of a fightercart I can write support for it too. I imagine it is electrically identical to the EMS but with a different flash protocol.
I'll make a video of the firmware update and BennVenn flashing process today