NX Redux

Custom firmware for TrimUI retro handheld gaming devices. It keeps the minimal, distraction-free interface — pick up, pick a game, play — while deliberately extending what sits underneath: standalone emulators, netplay, achievements, media tools and more. Those extras stay out of the way until you ask for them, tucked into the Tools and pause menus.

NX Redux is a fork of NextUI by LoveRetro, which itself descends from MinUI.

Watch the feature demonstration on YouTube Get NX Redux

Highlights

• Redesigned UI with consistent styling across the whole system, slide transition animations, and a game-list context menu.
• Game Switcher that always resumes exactly where you left off — quitting a game auto-saves to a hidden save slot.
• On-Screen Display (OSD) for volume, brightness, Wi-Fi, Bluetooth, screenshots and screen recording — available anywhere, even in-game.
• Netplay for local wireless multiplayer, including Game Boy / GBA link cable games, Nintendo 64 (up to 4 players) and Dreamcast (GGPO).
• RetroAchievements with full offline support — earn achievements offline and sync them later.
• Built-in Music Player and Media Player with high-quality audio routing to speaker, Bluetooth or USB-C DACs.
• Bundled standalone emulators: Nintendo 64 (Mupen64Plus), Nintendo DS (Drastic) and Sega Dreamcast (Flycast), plus PortMaster via the Xtras store.

Supported devices

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

SD cards are built per device model

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

Ready to install? Head to Getting Started.