I get an auto-shutdown with GBA/DS/DSiWare games
Luma3DS's automatic patching reports when a patch fails, to make it easier to maintain the patches in the future and to prevent unintended consequences. This means that if you installed a pre-patched FIRM which contains the same patches applied by Luma, this will trigger an error (with manifests with an auto-shutdown). You can fix this by reinstalling the clean versions from Nintendo.
- Get the clean system titles package from here.
- From the package, copy O3DS AGB.cia and O3DS TWL.cia (if you have an Old 3DS), or N3DS AGB.cia and N3DS TWL.cia (if you have a New 3DS) to the SD card.
- Plug the SD in your 3DS and open your favorite cia installer (the guide has been tested successfully with FBI). If you don't have one it's outside the scope of this guide, check how to get your first cia installed on Plailect's guide (refer to the "Injecting FBI" section).
- Install the .cia files you copied in step 2.
- Luma3DS should now be functioning normally, you can delete the .cia files you used.