MiyooCFW VS Onion-legacy

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

Just installed from here!

No, that is not. It references that it has been forked to here:

1. Format NEW SD card to Fat32 ("gui format" is a great, free application to do that) 2. Download newest firmware from Miyoo mini website and extract the miyoo283_fw.img file from the firmware folder to stock SD card (https://lemiyoo.cn/upgrade/) 3. Insert stock SD card into Miyoo mini device, plug into power and let update 4. Insert stock SD card into comp and delete miyoo283_fw.img file 5. Copy and paste all folders/files from the root of the stock SD card to the root of the new SD card. 6. Place roms in properly named folders in the Rom folder on new SD card (see chart below) 7. Download newest onion release and place .tmpupdate folder on root of new SD card (https://github.com/jimgraygit/Onion/releases) 8. Insert new SD card into Miyoo mini device, plug it into power and let update, then follow onscreen instructions for setup (leave .tmpupdate on new SD card do not delete) 9. Enjoy.

- Downloaded the port from the OnionOS-Wiki: https://github.com/jimgraygit/Onion/wiki/6.-Miyoo-mini-apps

Comes with all themes available at this time (41), includes config/preview fixes

Some of the Onion themes have missing preview images, some have preview images of the wrong size, and one has icon titles turned off in its config while on its preview image they're turned on.