fake-08 VS MiyooCFW

fake-08, written in c++ with an SDL backend: If you want/need accurate p8 behavior, down to stuff like peek+poke and fixed point precision, look here. (As a disclosure I have contributed to this project)

Reverted a fake08 commit that caused broken savestates (Commit 89ae9ae)

fake-08 – https://github.com/jtothebell/fake-08/releases

The fake08 core has been updated (Commit e9fe530)

It's just an emulation of the PICO-8 platform as a libretro core. You can learn more about it at https://github.com/jtothebell/fake-08.

GBA port would work, but I was testing fake-08 compared to ccleste

Fake-08 has a release to play Pico-8 games on 3DS.

This is currently not possible. You are welcome to create an issue about it here: https://github.com/jtothebell/fake-08/issues

Try getting a second SD card and flashing it with the Miyoo cfw from here. It's probably something corrupted on the card.

And/or just install one of the nightly builds yourself and see what issues you find. They can be found under the actions tab on github, although I think you have to be logged in to actually see the download: https://github.com/TriForceX/MiyooCFW/actions/workflows/build.yml

Generally speaking RetroArch allows installing and removing cores, but no clue how it works on this device and what the steps are if its possible. This article or tutorial might interest you: https://github.com/TriForceX/MiyooCFW/wiki/RetroArch-Setup I think you should be able to download a core from this place https://buildbot.libretro.com/nightly/dingux/miyoo-arm32/latest/ and just put it into the cores folder in RetroArch on your device. But there might be additional steps needed to integrate them into the system, not sure at this point. BTW you should have added the name of the device into the post title. Such generic titles aren't helpful.

I have used already the cfw for this model https://github.com/TriForceX/MiyooCFW/actions/runs/4988520114