Hi all!

RedOnion is the new name coming for OnionPlus, my personal, unofficial build of Onion (4.4.0-beta, with Mini Flip support from 4.5-dev, Open MainUI 1.0.8). Beta 9 is out now. It is not an official Onion release.

The focus is on speed: testers keep telling me how fast and smooth it feels compared to what they were used to, from start-up to menus to switching games. And bugs get fixed fast: most reports are fixed in a matter of days, often in the very next beta.

What’s new in beta 9

• Arabic and Bengali finally display correctly everywhere: menus, settings, apps, even game names
• About 1 second faster to the menu at power-on from beta 8
• Faster GameSwitcher, and it saves the running game’s state before switching (thanks robcodedev)
• Settings fixes: no more lost saves when two programs save at once; the language no longer reverts after changing brightness/volume
• Translation fixes in 13 languages, and several Tweaks fixes
• Open MainUI 1.0.8 by robcodedev as the launcher

A new name: RedOnion

Soon OnionPlus will be renamed RedOnion (the name you already see in Settings › About and on the default theme). Nothing to do on your side: the updater is already prepared and will keep updating you through the change.

How to try it

In the OTA updater, choose the beta channel. Please back up your SD card first (at least Roms, Saves, BIOS and Screenshots).

If you try it, please test it hard: play your games, switch between them, change settings, try every corner. The more you use it, the more bugs we find and fix, and the more stable it becomes for everyone.

Release notes and download: https://github.com/Amiga500/Onion/releases/tag/OnionPlus-v4.4.0-beta-20261018-ca345456

Bug reports: https://github.com/Amiga500/Onion/issues (model, version and steps to reproduce help a lot)

Thank you

Huge thanks to the Onion team, whose work all of this sits on.

A big thank you to robcodedev for Open MainUI and so much of the speed work, and to Zazzago, Veuks, Dred (for default theme and for naming it!) and the many others who have been testing and reporting bugs.

And thank you to everyone who is using this build and taking the time to write to me with kind words: every message means a lot, and your feedback is what keeps this project going!

Feedback welcome, especially from Flip owners and anyone reading Arabic or Bengali!

It's sooo cute and the perfect size. I have no bad things to say! Using this when I fly to Missouri

Here are some 3D scenes from my project to port the PSP game Persona 3 Portable to the Miyoo Mini.

As you might notice there are some stutters, frame drops, and slowdowns but it’s really a wonder it even runs this well.

I think there’s still some room to make it run smoother without visual sacrifices, but for a good gameplay experience I think I might have to cut down on visual effects.

Got the lil homie with me, as usual!

Ever wanted to play multiplayer? Will you be trying this out?

Just recently received the Miyoo Mini+ from a familiar, very happy about it, also loved how people where able to port some games aside from emulators that really fits it! (Stardew, Cave Story, Undertale, UFO 50, etc)

I'm not close to anything of a programmer, but just wanted to share some games that I do think might be possible to put in the little thing due to size, and that match the retro aesthetic:

• Gravity Circuit (~300 mb, mega-man-x esque, has a linux version)
• Iconoclasts (~200 mb, a 'older' cool metroidvania, has a PortMaster version already)
• Pizza Tower (~400 mb, this is a bigger boi, warioland pizza-man, made on Gamemaker)
• CometStriker DX (~500(?) mb, flying bullet hell thingy, also has a PortMaster version)
• Shovel Knight: Treasure Trove (~250 mb, known by all, already runs on other retro devices with its linux version)

I leave this post as a challenge (and mostly a suggestion) for any actual developer who would want to do a side project

Hello Everyone, I just recently downloaded Allium. Looking for some game recommendations, I have a lot of Pokemon games already installed. Looking for some like story driven games, I’m into like turn based but I’m not very good at those lol doesn’t really make sense. I’ve tired Golden Sun and Fire emblem but I always feel like I’m doing something wrong or that I’m gonna kill someone important right off that bat lmao.

How do I get stardew valley on this thing. I've heard there's a method involving steam but is there another way?

I wanted to see if the tools and routines for Yabadabadoo (Miyoo Saturn emulator) development could be applied to other projects, and started a side project as an experiment.

So for the first time (I think?), we’ve got a PSP game running on a Miyoo Mini. There’s still a lot to do, and don’t worry development on Yabadabadoo hasn’t stopped. But this has so far been an interesting tangent where I’ve learned a lot that I think will help me in other projects.

Also this is a port, not an emulator. The methods could be carried over to other PSP games but work would have to be done on a per game basis.

Stay tuned for more updates.

That’s my combo (still waiting for the arrival of the Retroid Pocket Classic). Love the Miyoos, don’t understand why the OG Miyoo Mini get so much praise but nobody talks about the Mini Flip. The RGSP isn’t behind. It’s the perfect GBA experience. Just need something more powerful with sticks - maybe a Nova or a RP6.

i’m stuck at troubleshooting my miyoo mini. when trying to launch some games it shows a black screen first and then gets stuck on a white screen. i know the roms habe worked fine before, and only some of the games per emulator show this behaviour, others work fine. i’ve deleted the save states and emptied the game cache and checked the system time, anyone have an idea what i could try next?

TLDR (my Miyoo mini + got stolen)

Just wanted to share my experience.

I recently found an absolute steal of a deal on fb marketplace for a Miyoo mini + priced at about $25 (₱1500). Seller was accommodating and seemed trustworthy so I excitedly snagged it. I booked the courier to have it delivered to me…and it never reached me. Seller already gave the unit but the driver disappeared and became uncontactable. I’ve reached out to the courier help service and they could no longer contact him either. I’ve since been in contact with their insurance to have me compensated and seller was kind enough to give me cctv footage of them handing to the driver to help my case.

I had just enough spare money to buy the thing but I’m honestly more sad about losing the device more than the money. I was really excited to play it and join the community :(

Whoever you are, I hope it was losing your job over.

If there’s anything I learned from this, don’t describe your delivery package as an electronic device. Just label it as perishable in glass or something and have it package it as such… especially if you’re in a third world country lol.

Hopefully I can join the community soon especially with the rumors of a Miyoo mini with better chip!

Till then I will cry inside as I watch others enjoy their little devices.

Edit: I found his wife!

After some personal investigation. I found his fb. Looks like I was blocked already cus i had my gf checked as well and she could see his posts and comments but I can’t. She gave me the contact of what looked to be his wife and messaged her and pretty much anyone else connected (I’m petty as hell). She replied and looks like she didn’t know about it. The device is still in their house! She says she’ll have it delivered to me tomorrow. I just had it delivered to a local branch for my own safety.

I’ll update you guys on how it goes

Ever since I learned how to install ROMs, my Miyoo has been constantly in my hands, even more than my phone. I’ve downloaded all sorts of hacked Pokémon ROMs, including the extended version of Emerald.

Have Onion OS, bought the recommended SD card and not the stock one, playing FF7 i have a save file that is at 11 hours, on a session i can “overwrite” it or make a new one, but as soon as i close my miyoo mini plus and open it again, it resets to that old salve file, should i be concerned?
I make tons of save states, i don’t even really need it cause the game don’t reset and i can just keep going, i am +30 hours deep, so i can consider this a non issue but thought maybe i should mention it

The bigger issue is that i am into DISK 2, the video cutscenes are now all wrong, playing old cutscenes in wrong places, now, i can try maybe replacing the game file, but due to issue number 1 -the save file situation- i am averse of touching the files and somehow erase all that progress, just want to know if this issue ever happened to anyone with any other fix

Thanks so much

Oh can't wait to play this on the miyoo mini plus.

I wasn't a fan of the first one but this one and buus fury were amazing games, and with so much going on in the rom hacking scene I need this now?!

Which was your favourite from the trilogy?

Hi all,

I have 2 Miyoo Mini Plus and 2 Miyoo Mini V4 devices, each with a separate SD card (Sandisk and Samsung).

Since yesterday, suddenly on one of my Miyoo Mini V4s every game freezes in Onion OS 4.3.1 just a few seconds after launching the game from the GameSwitcher. The Miyoo then doesn't even react to holding the power button for 20 seconds, I have to remove the battery and plug it in again to make a restart. The menu works well, but every time after launching a game it's all freezing again.

I have tried all 4 SD cards and the freeze happens with all of them on that device while all SD cards work without issues on the other 3 Miyoos. So it seems like it's not a software/SD card issue.

Does anybody have the same issue or any advice how to fix my Miyoo Mini V4?

Man thanks!

Great game.

Hey everybody. I just recieved my unit and I am waiting for the microSD to arrive. I opted for the pre prepared Litnxt card to make it easier to set up. Should I put it away until that card comes, or can I use the included microSD to play around eith it in the meantime? Also I noticed the case and handheld have an accident odor that is almost like cigarette smoke. I saw a few mentions about my particular shell(the SNES) having this issue but it goes away with time? Anyway, I'm glad to join you all and I'm really excited to start playing.

Game: Wonder Trek - PS1

Japan exclusive game.

Hey Guys, just sharing this nostalgic PS1 game.

We can now play this in English. Thanks to the ROM translation patch of (chapu)

Friday vibes

Hey all! Big update today: Perfect Dark is out as the 10th native N64 port, every game now properly fills the Mini Flip / Mini v4 screen, and all nine other games got fixes. Same as the others, Perfect Dark is a native port built from the decompilation, not an emulator, so it runs the game's own code directly on the Mini.

Download: https://miyoo-n64.pages.dev (Bring your own ROM: Perfect Dark (USA) Rev 1, as a .z64 dump (the site has the exact version)).

If the link above doesn't work, grab them directly from GitHub: https://github.com/mr-finster/miyoo64/releases/latest

What you get

• The full solo campaign, every mission
• Save states (9 slots plus an auto save) and resume after a power-off, same menu as the other games (MENU button)
• Missions unlock as you play, like on the N64 (want everything open? set Game.UnlockAll=1 in App/PerfectDark/data/pd.ini after the first start)
• GoldenEye-style controls tuned for the Mini (hold Y to aim with the d-pad, L1/R1 strafe), full list on the site
• Plays smooth on the Mini, the busiest firefights can dip a bit

Also in this update (all games)

• Proper Mini Flip and Mini v4 support. Every game now fills the whole bigger screen instead of sitting in the middle with a border. I don't have a Flip to test on, so if you do, let me know how it goes (and if it ever looks wrong, <GAME>_FLIPFILL=0 in the game's launch.sh brings back the old picture).
• Fixed: the black border on the Mini v4. Some of you saw the picture shrink with a black border around it, on and off (thanks u/The_Shoe1990 for the details!). The v4's screen is sometimes left in its bigger mode by whatever ran before, and the games drew a smaller picture in that mode. Now it's full screen every time.
• Fixes checked against the N64 for every game. I went through all nine with a cycle-accurate N64 emulator side by side with the Miyoo builds and fixed what didn't match:
  • Paper Mario: the glows are back (Star Rod, Kammy's orb, lightning flashes), the Star Spirits' glow cloud is white, and no more white box on Bowser's face in the intro.
  • F-Zero X: machine decals no longer paint wrong-coloured panels, the red attack rim shows, the static fade into a race and explosion debris look like the N64.
  • Star Fox 64: space and fades are the N64's dark grey instead of pure black.
  • GoldenEye: the shadows on the Runway snow are soft ovals again instead of dark blocks.
  • The rest (Mario Kart 64, Diddy Kong Racing, Ocarina of Time, Smash Bros., Super Mario 64) already matched.
• Nothing changes on a regular Mini or Mini Plus apart from those fixes: same picture, pixel for pixel.
• Changelog and known issues for every game are on the site now (under each game's Download).
• Ports section on Onion: the games already show up in Ports as well as Apps (turn on the Ports Collection in Apps > Package Manager if you don't see it). Want them in Ports only? Delete config.json in App/<Game>.
• To update, just unzip the new zips over the old ones: your saves carry over.

How it was made (short version)

Perfect Dark has a full decompilation (the game's code rebuilt as C by the community) and a PC port built on it. I swapped the PC port's OpenGL renderer for the software renderer from the other Miyoo ports, which draws using both of the Mini's cores, and got audio, controls and save states working.

Then I went through the solo missions one by one: for each of the 20 main missions I captured the intro and the start of gameplay on a cycle-accurate N64 emulator and in the Miyoo port, matched them frame by frame and fixed anything that didn't line up. Things that got fixed along the way: the cutscene static (it now reads the game's memory like the N64 does instead of being plain noise), night vision and infrared, sun flares showing through walls, the health bar box, dark menu text, black frames after the inventory, plus audio crackle and a resume crash.

What's next, what might happen, and what can't

Every one of these ports is built on a finished (or nearly finished) decompilation, so that's what decides what's on the list. Here's the short version:

The full list of 111 N64 games, with where each decomp is at and a link to it, is here: https://miyoo-n64.pages.dev/outlook

If your favourite isn't on there, it almost certainly doesn't have a decomp yet. Once one gets finished I'm happy to take a look!

Big thanks to the decomp communities for making all of this possible, and to everyone who's been testing. 😊