GESF3 3DS
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| GESF3 | |
|---|---|
 | |
| General | |
| Author | Foxy-no |
| Type | Save Managers and Editors |
| Version | 1.0 |
| License | MIT License |
| Last Updated | 2026/05/18 |
| Links | |
| Download | |
| Website | |
| Source | |
GESF3 (GBA EEPROM Save Fixer 3DS) is a Nintendo 3DS homebrew utility that converts Game Boy Advance EEPROM save files between emulator format and open_agb_firm format.
GESF3 is a Nintendo 3DS port of GBA EEPROM Save Fixer, a web tool created by exelotl.
Important:
- This tool is meant to be used to convert specifically GBA EEPROM save files, not all GBA save files.
- If you are converting a file with a name that already exists in the output folder, it will overwrite it without asking.
Features
- Batch processing (convert multiple save files at once).
- Automatic .sav detection.
- Keeps original filenames.
- Error handling.
- Lightweight and offline.
- Reversible conversion.
Installation
There are two easy ways to install this tool on your modded Nintendo 3DS:
Option 1. Manual install:
- Download GESF3.3dsx from the GitHub repository and copy it to
sdmc:/3ds/. - The app is now installed, you can launch it from the Homebrew Menu.
Option 2. Universal Updater support:
- Install GESF3 directly from Universal Updater.
- The app is now installed, you can launch it from the Homebrew Menu.
Important:
- Before using the app you are supposed to manually create 3 folders:
sdmc:/3ds/GESF3/sdmc:/3ds/GESF3/input/sdmc:/3ds/GESF3/output/
User guide
Use GodMode9 to put the save files that you want to convert inside the input folder: sdmc:/3ds/GESF3/input/
Launch GESF3 from the Homebrew Menu.
Press Y.
Converted saves will appear inside the output folder: sdmc:/3ds/GESF3/output/
You can now use GodMode9 to copy the converted saves to where they can be used (either to sdmc:/3ds/open_agb_firm/saves or to the folder used by the emulator).
Changelog
v1.0
- Initial release.
External links
- GitHub - https://github.com/Foxy-no/GESF3
- Universal-DB - https://db.universal-team.net/3ds/gesf3