: Specific "Extra Data" such as Guild Quests, equipment sets, and DLC. Manual Saving
Here’s a technical write-up focused on reverse engineering and analyzing Monster Hunter 4 Ultimate (MH4U) save data for the Nintendo 3DS. monster hunter 4 ultimate save data better
def fix_checksums(data): # data: bytes of full save file sum16 = sum(data[0x0C:]) & 0xFFFF xor8 = 0 for b in data[0x0C:]: xor8 ^= b # Place checksums at offsets 0x04 and 0x08 new = bytearray(data) new[0x04:0x06] = sum16.to_bytes(2, 'little') new[0x08:0x0A] = xor8.to_bytes(2, 'little') return bytes(new) : Specific "Extra Data" such as Guild Quests,