u/StarShoot97

I have found a way how to collect achievements on the original Miyoo Mini, even though it has no wifi support
It's all possible because of u/misantronic 's awesome app RAOfflineproxy!

What you need:

• A microsd running the latest beta version Onion V4.4.0-beta-20260120 of OnionOS
• A Miyoo Mini+ or Miyoo Mini Flip
• A pc

Steps:

1. Setup OnionOS and install the latest version RAOfflineproxy following the instructions on your MM+/Flip
2. Login with your Retroachievements credentials in Retroarch
3. Open RAOfflineproxy, start the proxy and enable autostart (open keyboard with X, select the number and then press start)
4. Start the games you want to collect while online to cache the games or do it manually in the app (currently not available, but it's planned)
5. Turn off the device, remove the microsd and insert it into your pc
6. Apparently the MM uses a special build of Retroarch without achievements support, we have to circumvent that now: Go to the ./RetroArch folder on the micro sd, there are several files inside. "retroarch" is the binary for the MM, "retroarch_miyoo354" is the binary for the MM+ (I have no Flip so can't check). Copy the "retroarch" file somewhere safe and then rename it to something else like "retroarch_originalmini". Duplicate (copy and paste) the "retroarch_miyoo354" and then rename the new file to "retroarch". Eject the sd card
7. You can now plug it into your Miyoo Mini and start the games you cached before. If you did everything correctly, the pop-up like I have in my picture should appear.

Enjoy your games! To sync the achievements to the server, just insert it into the MM+/Flip, connect it to the internet and it should upload the data automatically, if not then start a game.

I hope you enjoy your Mini even more now :)

PS: If techdweeb uses reddit, can someone tag him so he can see this? haha