Getting Started

NX Redux for TrimUI handhelds is custom firmware. It replaces the stock interface with the NX Redux launcher. New to NX Redux? See About NX Redux first.

Supported devices

Device	Minimum stock firmware
TrimUI Brick	1.1.1
TrimUI Brick Hammer	1.1.1
TrimUI Brick Pro	1.1.1 or 1.1.2
TrimUI Smart Pro S	1.0.1 or 1.0.2
TrimUI Smart Pro	1.1.1 (should work in theory, but unconfirmed — no test device)

SD cards are built per device model

A card set up for one device (e.g. the Brick) must not be moved into another (e.g. the Smart Pro S). To carry saves, save states, settings and (optionally) ROMs across devices, use the built-in Device Sync tool instead of swapping cards.

More detail

Each release is packaged for a specific device. Resolution, OSD assets and other layout differ between models.

Before you install

Update the stock firmware first

Update your device to at least the official TrimUI firmware version listed in Supported devices before installing NX Redux. Older firmware breaks some features.

You will also need:

• A reputable-brand microSD card, freshly formatted as exFAT (preferred).
• The release zip for your exact device model from the releases page.

More detail

• NX Redux relies on system libraries the stock firmware ships, which is why older firmware breaks some features.
• Releases are packaged per device (brick, brickpro, smartpro, smartpros) and are not interchangeable.

Installing

1. Format the SD card as exFAT.
2. Extract the release zip and copy everything to the root of the SD card. That means all the folders, the trimui folder, and MinUI.zip. Do not unzip MinUI.zip.
3. Preload at minimum your Bios and Roms folders. Each system has its own subfolder, e.g. Roms/Game Boy Advance (GBA)/ and Bios/GBA/.
4. Insert the card and power the device on. The installer runs automatically on first boot.

First boot also upgrades the Bluetooth stack

You will see an extra Extracting / Installing step on the splash screen. This writes to the device's system partition, not the SD card. The only way to undo it is to reflash the stock firmware.

More detail

• A release has two essential parts: an installer/updater archive named MinUI.zip and a bootstrap folder named trimui. They sit alongside the SD card folder skeleton (Bios, Roms, Saves, and so on).
• The release zip also includes a nextui.upgrade_bluez.*.pakz file next to MinUI.zip. On first boot the installer extracts it and replaces the device's built-in Bluetooth stack (BlueZ, bluez-alsa and the SBC codec) with newer versions.
• The Bluetooth upgrade runs only once, and is skipped on devices that already have it. See Bluetooth for details.

Updating

Pick either way:

Way	How
OTA updater (on-device)	Open Settings → About. It checks for a new release when you open the page, then downloads and installs the update right there. Needs Wi-Fi.
Manually	Copy the new release's MinUI.zip (without unzipping) to the root of the SD card containing your ROMs, then boot the device.

Emulator and Tool paks update automatically with every update. There is nothing to copy by hand.

Your own paks

The /Emus and /Tools folders on the SD card are for your own community paks (e.g. MyEmu.pak). Do not give a pak there the same name as a shipped one. Same-named paks are treated as NX Redux leftovers and are removed on every update.

More detail

Emulator and Tool paks are part of NX Redux itself. They live in /.system/paks/.

First boot

After installation you land on Home, the first of the main menu's four tabs: Home, Consoles, Collections and Tools. Switch tabs with L1 / R1.

Button	What it does
L1 / R1	Switch tabs
A	Open a system or game
START	Search your whole library
SELECT (tap)	Open the Game Switcher
MENU (on a game)	Open its context menu

Continue with the User Guide.