so really the arm7.bin is just a dll which controls saving, and that has been recently upgraded to prevent piracy?
1. Load the JPN ROM with DSlazy, and press "unpack" on DS lazy. // Here the JPN ROM is either 0864 - SimCity or 1103 - Hoshigami.
(...)
7. then put the unprotected ROM on your card and try to play normally.
so really the arm7.bin is just a dll which controls saving, and that has been recently upgraded to prevent piracy?