Demul Mpr- 21931. Ic501 May 2026

Often, BIOS packs use different naming conventions. You can manually rename your existing files based on their values to match what DEmul requires:

You may have the correct BIOS data, but the file is named generically (e.g., dc_bios.bin ) instead of the specific format DEmul expects. demul mpr- 21931. ic501

DEmul expects BIOS files to be zipped together in a file named dc.zip within your designated ROMs folder. Often, BIOS packs use different naming conventions