Apologies for the thread necro. Posting info that could be useful to people googling in the future.
USA version 1.1 of Majora's Mask 3DS save files
Checksum is CRC16 located at offset x1A88
To properly calculate a new checksum the old one need to be replaced with 0D 44, calculated and then replaced with the bits swapped.
In steps:
-Edit save file as you'd like
-Replace checksum at x00001A88 with 0D 44 in a hex editor like HxD
-Calculate a new checksum using CRC16 of the entire file.
-Replace checksum at x00001A88 with new checksum with bytes swapped. (A checksum of DCE5 would go into the file as E5 DC)
-Load up save.
Hopefully works. Should load. Don't @ me.
USA version 1.1 of Majora's Mask 3DS save files
Checksum is CRC16 located at offset x1A88
To properly calculate a new checksum the old one need to be replaced with 0D 44, calculated and then replaced with the bits swapped.
In steps:
-Edit save file as you'd like
-Replace checksum at x00001A88 with 0D 44 in a hex editor like HxD
-Calculate a new checksum using CRC16 of the entire file.
-Replace checksum at x00001A88 with new checksum with bytes swapped. (A checksum of DCE5 would go into the file as E5 DC)
-Load up save.
Hopefully works. Should load. Don't @ me.
