NextUI and MinUI Setup Guide: A Minimal Frontend for Trimui and Miyoo

Not everyone wants scraped box art, animated themes, and deep settings menus. Some people just want to turn on a handheld, see a clean list of games, and start playing. That is exactly what MinUI and its modern successor NextUI deliver. They strip the experience down to the essentials, and the result is calm, fast, and friendly.

This guide explains the difference between MinUI and NextUI, which devices they support, and how to get one running on your handheld. We frame all of this around playing games you already own.

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MinUI vs NextUI

MinUI is the original minimalist firmware. It shows a plain text list of your systems and games, with no box art and almost no menus. It boots fast, sips battery, and gets out of your way. The whole philosophy is less clutter and more playing.

NextUI is a community fork of MinUI that keeps the clean spirit but adds modern touches. Depending on your device, that can include box art thumbnails, better menu visuals, more settings, and quality-of-life features that MinUI leaves out. For most people on a supported device, NextUI is the more polished pick today.

Both share the same core idea. If you love simplicity, you will be happy with either.

Supported Devices

MinUI and NextUI run on a range of small handhelds.

• Trimui Brick and Trimui Smart Pro
• Miyoo Mini and Miyoo Mini Plus
• Several other small Allwinner and similar handhelds

Support changes over time as the projects evolve, so check the official documentation for your exact device before you start.

Why Choose a Minimal Frontend

If you want a richer, console-like experience instead, our muOS vs KNULLI vs Onion OS guide compares the heavier options.

What You Need

• A supported handheld
• A microSD card, 32GB or larger
• A microSD card reader and a computer
• The MinUI or NextUI release for your device
• A tool to unzip files

Step 1: Download the Release

Go to the official MinUI or NextUI releases page and download the latest build. These projects usually ship as a zip file that you extract directly onto a freshly formatted card, rather than an image you flash. Read the included instructions, since the exact steps can vary by device.

Step 2: Format and Prepare the Card

Format your microSD card as FAT32 or exFAT, following the project's instructions for your device. Then extract the contents of the download to the root of the card. This usually creates a set of system folders and a couple of special files that tell the handheld how to boot.

Step 3: Add Your Games

The firmware creates a Roms folder with subfolders for each system. Folder names often include a tag in parentheses that maps the folder to the right emulator. Drop your games into the matching folders.

Place any required BIOS files where the documentation tells you, usually a Bios folder. You supply all games and BIOS files from hardware you own. Our how to organize ROMs and BIOS files guide explains a clean folder structure.

Step 4: First Boot and Play

Put the card in your handheld and power on. You should land on a simple list of systems. Pick a system, pick a game, and play. When you power off mid-game, the firmware remembers your spot and resumes automatically next time. That automatic resume is one of the best parts of the minimal approach.

Step 5: Optional Tweaks

• Box art on NextUI. If your build supports thumbnails, add cover images to the art folder following the naming rules in the docs. Our how to scrape box art guide can help generate them.
• Save backups. Saves and states live in folders on the card. Copy them to your computer regularly. See our save state management guide.
• Updates. New releases usually drop in over the existing setup. Always back up your saves first. Our how to back up your saves before a firmware update guide covers a safe routine.

Troubleshooting

Handheld boots to stock firmware instead. The card may be formatted wrong, or the boot files are in the wrong place. Re-extract the download to the root of the card and check the docs for your device.

A game will not launch. The folder tag may not match an installed emulator, or the system folder name is off. Confirm the folder name against the documentation.

No box art. MinUI does not show art by design. If you want thumbnails, use NextUI on a supported device.

MinUI or NextUI: Which One

The short answer is NextUI for most people on a supported device. The longer answer depends on what you actually want.

	MinUI	NextUI
Box art	None, by design	Yes, on supported builds
Menus	Plain text lists	Cleaner visuals, more options
Settings depth	Minimal	Moderate
Boot speed	Fastest	Very fast
Philosophy	Absolute minimum	Minimal, but modern
Best for	Purists and kids' devices	Most people

Pick MinUI if the appeal is genuinely the starkness. It is a lovely thing to hand to a child or to keep in a bag, because there is nothing to fiddle with and nothing to break.

Pick NextUI if you want that same calm feeling but would still like to see cover art and have a few more options available when you want them.

Why Automatic Resume Matters More Than It Sounds

This is the feature that converts people, and it is easy to undersell.

On most firmware, stopping a game means opening a menu, choosing a save state, and confirming. On MinUI and NextUI you turn the device off mid sentence and turn it back on later, and you are exactly where you were.

That changes how you use a handheld. A five minute session becomes worth starting, because there is no ceremony at either end. For a pocket device you pull out on a train or in a queue, it is arguably more valuable than any amount of theming.

Choosing a MicroSD Card

These are firmware images that run from the card, so the card is not an accessory here. It is the device's storage and its operating system at once.

Get a reputable branded card. A cheap unbranded card is the single most common cause of mysterious corruption, games that will not launch, and saves that vanish. Our best microSD cards guide covers what actually holds up.

32GB is plenty for the systems these devices handle well, and 64GB is comfortable. There is little reason to go larger, since a device running MinUI is not playing PS2 games.

Keep a backup of your card contents somewhere. Cards do fail, and re-extracting firmware is quick while rebuilding a curated library is not.

Frequently Asked Questions

Is NextUI better than MinUI?

For most people, yes. NextUI keeps MinUI's calm, fast feel but adds box art, better menus and a few more options. Choose MinUI only if the absolute starkness is the actual appeal, which for some people it genuinely is.

Does MinUI support box art?

No, by design. Showing nothing but a text list is the entire philosophy. If you want thumbnails, use NextUI on a supported device.

Which handhelds run MinUI and NextUI?

Small devices like the TrimUI Brick, TrimUI Smart Pro, Miyoo Mini and Miyoo Mini Plus, plus several other small Allwinner style handhelds. Support shifts as the projects evolve, so check the official documentation for your exact model before starting.

Do I need to flash an image?

Usually not. These projects normally ship as a zip you extract onto a freshly formatted card, rather than an image you flash. Read the instructions included with your download, since it varies by device.

Why does my handheld boot to stock firmware instead?

Either the card is formatted wrong or the boot files are not at the root of the card. Re-extract the download to the top level of the card and check the documentation for your device.

Will I lose my saves when I update?

You should not, since updates usually drop in over the existing setup. Back up your saves first anyway. Our firmware update backup guide covers a safe routine.

Is MinUI good for kids?

Very. There are no menus to get lost in, no settings to break, and automatic resume means a child can turn the device off and on without losing progress or needing help.

Recommended Handhelds

MinUI and NextUI feel right at home on tiny pocket handhelds. The

pairs a sharp screen with NextUI for a fantastic minimal setup. The is the classic pocket pick and runs both projects well.

For more pocket options, see our best micro and pocket handhelds guide. Comparing tiny devices? Our Trimui Brick vs Miyoo Mini Plus comparison breaks it down.