- Obtain the UNIBIOS 4.0 ROM.
- Use the BPS patch file to patch your ROM. I recommend FLIPS.
With this patch, keeping B pressed while soft rebooting from the in game menu will make the multicart boot on the menu.
This patch enables PICKnMIX feature for a custom 161in1 cart, with some limitations:
- Always boots to PICKnMIX, even with a normal game cartridge.
- Works on MVS only (backup RAM used to store soft dips).
- No high score save.
- Tested on a MV1A only.
- Game list (titles and order) is hardcoded. The custom 161in1 cart must have been created with this one: uni-bios_4_0_PICKnMIX.csv.
- Use at your own risk!