RetroBreeze | Miyoo Mini Onion OS full simple upgrade tutorial | KEEP YOUR GAMES | **OUTDATED** @RetroBreezeYT | Uploaded May 2022 | Updated October 2024, 2 days ago.
See the updated guide here: youtu.be/eVU5_gJRCiw

Note: There is a small error in this guide. At 6:41, drag the contents of the System folder into the SD card's BIOS folder, rather than the one I specify.

Here's an updated guide for installing Onion OS on your Miyoo Mini. This video will help you to update whilst preserving the important content on the SD Card you had before the upgrade, such as games, saves and other data. This guide assumes you're going from factory status, right out of the box.

Links:
Fat32Format: ridgecrop.co.uk/index.htm?guiformat.htm
Miyoo Firmware: https://lemiyoo.cn/
Onion OS: github.com/jimgraygit/Onion

0:00 Intro
0:28 Backing up the included SD Card
1:15 A note about SD cards...
2:06 Formatting your new SD card
2:55 Updating the official firmware
4:52 Installing Onion OS
6:15 Restoring games, images, saves and system files
7:15 Onion OS Features

Background music: Made In Italy (Electronic Corporate Background Tech) by SergeyWednesday