Demul Mpr 21931 Ic501 Repack ((link))

If you mean repacking the ROM set for DEMUL so it bypasses IC501 checks:

If merging doesn't work, the ROM needs a hard repack using a decryption tool. demul mpr 21931 ic501 repack

Demul requires the program ROM to be a single, contiguous chunk of memory. If you mean repacking the ROM set for