Hi, I am not sure if this is the right forum to post but an admin can move it. I was able to backup my retail cartridge and save of MH4U using GW backup option. The ROM (.3dz) is working perfectly but the .sav file does not work on it at all. I have read in the forums that I need to have NTR CFW + SDF to make my .sav working with my ROM. I was going to do this until I learned that installing NTR CFW requires a NAND 4.5 (sys or emu??) while my sysNAND is 4.2 and emuNAND is 9.8. I am using an O3DS by the way. Is it possible for someone to make my .sav file working with my ROM if I attach my .sav here? If any, can someone link me on how to upgrade my sysNand 4.2 to sysNand 4.5? I do have an extra SD card, maybe I can use that to make an emuNand 4.5? Thanks a lot!