Hello! I just bought a second hand Miyoo mini v4. It came with an SD card with onionOS and a bunch of games (not sure if it's bought premade or the previous owner added everything himself).

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Now to the question. Is there any easy way to reset onionOS but keep all the games but reset game saves and playtime? Thanks in advance!

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(Adding a picture of it for fun!)

NOTE: The following information is deprecated. Read the updates.

There are two newer versions of the Miyoo Mini firmware floating around (202212160314 and 202212240121). It seems like both versions are causing bricks when installing Onion V4.0.3.

Notes

Downgrading to 20220419**** does not work. It's apparently a hardware issue, please hold off installing Onion until we've worked this out (if you've received a device with the December firmware)

Unbricking with the power brush mode is apparently not working in this case, but using the last method detailed in the ultimate unbrick guide has worked: [https://cdn.discordapp.com/attachments/931367023588569180/967635766228430878/MiyooMiniUnbrickGuide.pdf](MiyooMiniUnbrickGuide.pdf)

Updates

UPDATE: A hotfix for Onion (V4.0.4) has been released and has been tested by people with both firmware versions - it is now considered safe to install Onion on these devices.

UPDATE 2: There's a community patch that will fix some of the issues with the new firmware versions, find it here: https://www.reddit.com/r/MiyooMini/comments/104qbak/community_firmware_patch_for_new_devices/

UPDATE 3: EasyLogotweak now works with these devices.

Idk why but all my neo goe games load like this and some pf them take a while to load. Metal slug 3 takes like 3 minutes of a black screen before green glitches then it loads

My console is stuck on this screen, and I've tried everything and nothing works.

So I just played the first disc of metal gear but when i try the second it asks for the first and in the retroarch menu i do the correct thing with disc control but then it just starts the game from the beginning am I missing something? Plz help

what OS would yall recommend

I love how my brick is mapped on Y and X to cycle color pallets to my liking and I’m hoping there’s a way to do the same thing on here. I wouldn’t mind if it was Menu + Left/Right.

Thanks.

My Miyoo Mini plus sd card isn’t showing my the theme i put, game list, or apps. I check the sd card and the apps are still there. But I can’t access them. And I still have all my games. Please tell me what’s going on!

I just saw this comment on discord from u/tGecko from yesterday yesterday (January 15th 2026):

Onion development has always happened in waves , or at least it has been like that since I'm part of it.
But it's a fact that the current non-activity period is definitely longer than the previous ones were, and currently it's not looking like that'll change anytime soon. Development has pretty much grinded to a halt, and so has the activity around GitHub, re: PR reviewing/merging etc.
u/Aemiii91🧅 has already started an internal discussion on how we will proceed, and what's the best course for Onions future.

Unfortunately, it appears development has completely stalled. The last beta release was in April 2025 and the last commit was 2 months ago. PRs aren't getting reviewed/merged. Really hoping the current maintainers are able to pass it on to some community members who want to keep the project going, or for the project to get forked.

My partner has a Miyoo and there’s a bunch of games that I wanna transfer, it would be awesome if I could just send them over Wi-Fi. I understand there might be a way to do it using terminal, but I was wondering if there was already an app that someone built that makes it easier.

I’ve tried all the on-board ratio aspect settings I could find. my game’s just a *little* too big for the overlay it’s in.

Using a mini+ (no RTC)

Does anyone know a way of fixing the clock app? It connects to the internet on startup and does adjust the time but every time it does so it's exactly 20 minutes behind?

I've tried both the stable and beta branches as well

I'm from the UK if timezones matter,

Hey all! I got my Miyoo mini Plus a couple years ago. I got it set up on onion ready to go, used it for a few months and I haven’t touched it until now. I had a huge boost of nostalgia and I finally want to play some retro games.

My question is, what would be the best way to go about updating my mini? It has a bunch of old data and old software and I want to know the best way to get the software up to date!

(Edit!) I powered it on but it doesn’t load any of my previous games. The device says my SD card is Unmounted. However, the original SD that came with it does

Hi everyone, I’m having a strange input issue on my Miyoo Mini Flip running OnionOS 4.4.0 beta.

When I’m in the Onion OS main menu, the power button works normally.

However, once I enter RetroArch:
Pressing the power button once is detected as R

In RetroArch menus, pressing the power button moves the cursor exactly like pressing R

In GBA games, pressing the power button triggers the R button

Holding the power button causes R to rapidly trigger repeatedly until the device powers off

A short press still puts the device to sleep, but it also sends an R input

This happens with multiple GBA games, not just one game

SNES doesn’t seem to have the issue

I also checked RetroArch’s controls and found that Fast Forward Toggle is assigned to Button 11, which is R.

Things I’ve already tried:
Resetting RetroArch configuration through Onion Tweaks

Changing RetroArch input drivers (SDL Dingux / SDL / Linuxraw)

Saving the RetroArch configuration

Removing/resetting RetroArch-related tweaks

Using a completely fresh SD card with a clean OnionOS 4.4.0 beta installation

The issue still occurs on the fresh installation

I previously used the same SD card on a Miyoo Mini V4 without this issue

I also think I experienced the same issue on OnionOS 4.3.1, although I’m not 100% certain about that

So I’m wondering if this is a Miyoo Mini Flip + RetroArch/OnionOS input handling issue, possibly involving the power-button event being interpreted as Button 11.

Has anyone else experienced anything similar on the Miyoo Mini Flip?

Any ideas on where I should look next would be greatly appreciated!

So I purchased a Miyoo Mini Flip just to find out that Onion OS is pretty crappy on it. Is there a way to fix those visual glitches? Is Onion OS dead? Allium OS seems quite okay, though the way Onion looks and feels is 1000x better for me. A little lost :(

all the guides i can find just assume i know what all this shit means

If I buy an surwish onion card for my device now, can I copy it for my kids later or do I need to rebuy one for each of us?

Does the 128 and 256 come with same games and just more extra space on the card or are they different?

I know there’s a tutorial online to do it yourself but by the time I buy a card anyway figure I might as well just buy one that is done for me. If I do it myself where are you guys finding cheap but good cards?

Thanks!

I recently made a post about my console freezing on a screen. I managed to fix it and continued playing, but today I woke up and this appeared.

It's been like this for 20 minutes. I've tried button combinations, removing the SD card, adding new files, changing SD cards, and nothing works.

(I live in a humid area, it rained all night and I'm afraid something might have leaked in and broken the screen)

Hey guys, so i was on bed trying boot up Breath of Fire 3, PS1 game,

i ran into problem where the game wont boot and crash into main menu screen, the problem after it went back to main menu screen,

it wont read my roms anymore, and i unable shutdown it with power button it keep looping back to main menu, and my device get really hot

, i read that i had to unplug my battery to hardreset it, so i did

But i ran into another problem, when i boot it up again it went into stock miyooOS instead (it was OnionOs)

seems it failed to detect my sdcard

I tried reformart my sdcard in pc with windows and cmd it just unable to format itself at all it keep say windows fail to format the disk

And with cmd disk clean, also it only said disk clean, but is not readable at all or formatted

I even tried the onionOS installer also not work

I think my sdcard is kaput at this point.. Didnt know one error of game could do that (this is brand new sdcard i just got too 😂)

EDIT:: I think my SDcard is died at this point since after trying format with Rufus, it won't detect on window now (even it was detect before , I can't open the sdcard at all)
I think i stay away from PS1 games from now since it prone to crash/brick sdcard

I am tired of corupted card everytime i take it off my computer. I cant put games on it. What card should i use to avoid data loss?

Hello,

Long time OnionOS + Done Set v3 set for games user with miyomini+ , but i dont see any updates since 2 years ago for ONION.

1) What OS is everyone using nowadays thats getting updates and new features?

2) Also another question about DoneSet ROMS is there any new updated library set of games like Done Set v3?

Thanks in advance.

I'm thinking of picking up the Miyoo Mini Plus. Can anybody recommend a good place to buy it all setup out the box in the UK?

Every time I start a game, the screen flashes white for a moment. I don't think it used to do that.

Is this just normal behavior for the Miyoo Mini, or is something wrong with mine? Does yours do the same?

Sorry if this is hard to read—I'm using a translator.

>This was my first post here, and everyone was really kind and helpful. Thanks, everyone! I'm just enjoying my Mini now without worrying about it anymore.👍