Is the ROM modified in any way?When I open a GBA game on my dsi and save it then reboot my console the save doesn't persist does anyone know why?
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When I open a GBA game on my dsi and save it then reboot my console the save doesn't persist does anyone know why?
If not, then try reformatting the SD card using this guide: https://dsi.cfw.guide/sd-card-setup.html
If the issue persists, then which game?