3DS GBA Save Backup and Restore with GodMode9

Discussion in 'Nintendo 3DS Guides' started by InsaneNutter, Mar 24, 2018.

  1. InsaneNutter

    InsaneNutter Resident Nutter Staff Member

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    If you have followed my previous tutorial on Nintendo 3DS GBA Game Injection to play GBA games on the 3DS then you might be wondering how you can backup your save games or even restore a save game from an emulator or from a real GBA game cartridge.

    You can do this quite easily with GodMode9 once you know how.

    If you have injected some GBA games on to your 3DS then you have CFW and should have GodMode9 installed as this is used during the process to install CFW on your 3DS when following the popular https://3ds.guide however if you hacked your 3DS a long time ago then its quite possible your version of GodMode9 is out of date. The ability to backup GBA savegame is quite a new feature on GodMode9, so first download the latest version of GodMode9.

    Unzip this to your 3DS's SD card in the luma\payloads folder, overwriting the existing payload:

    3ds-godmode9-update.jpg

    Your all set to backup your GBA save games on the 3DS now.

    Backing up GBA Saves on the 3DS:

    Keep in mind you can only backup the save of the last GBA game you played, so launch the GBA game you wish to backup:

    gba-3ds-save-backup-gm9-0.jpg

    Let the game load, then press the home button and exit back to the 3DS home screen before powering the 3DS off.

    Now hold the start button and press the power button to turn the 3DS on, this should launch GodMode9 by default. If it doesn't you have likely assigned a different button to hold when powering the 3DS on to load GodMode9.

    When GodMode9 loads go down to Sysnand Virtual and press A:

    gba-3ds-save-backup-gm9-1.jpg

    Press A on agbsave.bin, this is the save game which was restored to the 3DS's nand when you loaded the last GBA game you played up:

    gba-3ds-save-backup-gm9-2.jpg

    Press A on AGBSAVE options:

    gba-3ds-save-backup-gm9-3.jpg

    Select Dump GBA VC save:

    gba-3ds-save-backup-gm9-4.jpg

    The GBA save should be dumped to gm9/out on the SD card:

    gba-3ds-save-backup-gm9-5.jpg

    As you can see the save game has been dumped with the title ID of the installed GBA game with .gbavc.sav as the file extension:

    gba-3ds-save-backup-gm9-6.jpg

    You have now backed the save up and can use it on an emulator, or even restore it to a real GBA game cartridge if you have a DS / DS Lite with a Flash Card and GBA Backup Tool. Either way i'd suggest copying it to somewhere safe on your computer.

    Restore GBA Saves on the 3DS:

    You are almost doing the reverse of what you have just done to backup a save.

    Again keep in mind you can only restore the save of the last GBA game you played, so launch the GBA game you wish to restore the save to:

    gba-3ds-save-backup-gm9-0.jpg

    Let the game load, then press the home button and exit back to the 3DS home screen before powering the 3DS off.

    Now hold the start button and press the power button to turn the 3DS on, this should launch GodMode9 by default. If it doesn't you have likely assigned a different button to hold when powering the 3DS on to load GodMode9.

    Go to the SD card and find the GBA save you wish to restore:

    gba-3ds-save-restore-gm9-1.jpg

    Press Y on the save you wish to restore and it will be copied to the clipboard, you will see [Clipboard] in the top right of the bottom screen when you have done this, as shown below:

    gba-3ds-save-restore-gm9-2.jpg

    Now navigate to Sysnand Virtual:

    gba-3ds-save-restore-gm9-3.jpg

    Press A on agbsave.bin, then on the bottom screen select AGBSAVE options:

    gba-3ds-save-restore-gm9-4.jpg

    Then inject GBA VC Save:

    gba-3ds-save-restore-gm9-5.jpg

    The save game will then be injected:

    gba-3ds-save-restore-gm9-6.jpg

    You now know how to restore a GBA save, you can restore a save from an emulator, or even from a real GBA cartridge if you dump the save with a tool such as GBA Backup Tool using a DS or DS Lite.

    I have personally been enjoying playing my GBA games on a much larger screen:

    gba-3ds-save-restore-gm9-7.jpg

    Hopefully this tutorial has been some help to you.
     
  2. wikedsuperlink

    wikedsuperlink New Member

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    thank you so much this really helped now i can play my fan translated mother 3 cartridge on my 3ds without having to take my gameboy with me on the go
     
    InsaneNutter likes this.
  3. InsaneNutter

    InsaneNutter Resident Nutter Staff Member

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    @wikedsuperlink Enjoy, i'm doing this with Pokemon Emerald on my 3DS. I will eventually restore the save to my cartridge so I can trade Pokemon and such. However its nice playing it on the go, with a much larger screen in the meantime.
     
  4. Hamouda55

    Hamouda55 New Member

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    Please help , when I tried to inject sav file it told me " injection failed" so how can i fix it?
     
  5. InsaneNutter

    InsaneNutter Resident Nutter Staff Member

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    Is the save the correct size? for example if its a Pokemon game are you injecting a 64k save in to a custom GBA game which is expecting a 128k save?

    Latest version of Godmode9?

    More info needed.
     

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