For support (in English) with GodMode9, as well as help with scripting and to get updates and info, join GodMode9 on Discord.
Aside from creating and restoring NAND backups, GodMode9 has the functionality to dump installed titles to an installable .cia file, to dump game cartridge data to a .3ds ROM file, and to directly install a game cartridge to the system.
These instructions are written for use with GodMode9 v2.0.0 or later. If you have an older version of GodMode9, follow these instructions to update it.
This will only work for 3DS games; it is not possible to install an NDS game cartridge to the system as a title. Instead, you can dump your NDS game cartridge and use a homebrew app to run it from the SD card.
Press and hold Start, and while holding Start, power on your device. This will launch GodMode9
Navigate to [C:] GAMECART
Press A on <TitleID>.trim.3ds to select it, then select NCSD image options…, then select Install game image
Press A to unlock SysNAND (lvl1) writing, then input the key combo given
Once the process is complete, your game will show up in the HOME Menu as an installed title.
To identify a <TitleID>.gbavc.sav file’s Title ID, you can get a listing of all games on the system and their corresponding Title IDs by pressing Home to bring up the action menu, selecting Title manager, and selecting [A:] SD CARD.
Do the following process for each GBA VC game that you want to back up the save for:
Launch the GBA VC game
Exit the GBA VC game
Power off your device
Press and hold Start, and while holding Start, power on your device. This will launch GodMode9
To identify a <TitleID>.gbavc.sav file’s Title ID, you can get a listing of all games on the system and their corresponding Title IDs by pressing Home to bring up the action menu, selecting Title manager, and selecting [A:] SD CARD.
Do the following process for each GBA VC game that you want to restore the save for:
Launch the GBA VC game
Exit the GBA VC game
Power off your device
Press and hold Start, and while holding Start, power on your device. This will launch GodMode9
Navigate to [0:] SDCARD -> gm9 -> out
Press Y on the <TitleID>.gbavc.sav file you wish to restore to copy it