GammaOS Nano v1.4 (Anbernic RG DS) Release Notes

Patreon Exclusive Release
Password obtained from Patreon for GammaOS Insider tier supporters: https://www.patreon.com/posts/165129259
This release will become publicly available to non-supporters at a later date. The password will be posted on Patreon.

Release Date: 29th July 2026.

RELEASE CURRENTLY PULLED PENDING WIFI ISSUES - A fixed version will be uploaded shortly.

This is a whole new GammaOS

v1.4 is not an incremental update to the previous RG DS release. GammaOS Nano is not a launcher, it is a whole micro-OS built on top of Android. It grabs the panel the instant you power on and paints a full console-style home (the RG DS boots into the DSi System Menu theme by default), but underneath it is deeply integrated with the low-level Android system and the device hardware: DRM-direct rendering straight to the panel, an early-boot audio engine that sounds before the rest of the system is even up, native power and sleep management, and direct control of the two screens. There is no heavy Android launcher loading in the background, no bloat, and no waiting. It boots straight to a console-style experience that is fast, lean and built for a controller first.

The old v1.2.2 build was a traditional Android launcher experience. v1.4 Nano replaces that with a purpose-built micro-OS: a boot-to-play system, three full home themes, built-in media players, a dual-screen Control Center and a heavily optimized Nintendo DS player. If you are coming from v1.2.2, this will feel like a completely different device.

Known Issues

• GammaOS Nano ships with NO Google Services. This is a deliberate design choice for maximum performance, battery life and a clean boot-to-play experience. If you need the Play Store or Google sign-in, this build is not for you. There is no "Full" variant for Nano on RG DS.
• On a cold boot the bottom screen may occasionally come up with wrong colors or wrong positioning. This is caused by the device bootloader (uboot) not handling two screens consistently at power-on. It is completely harmless. Once the device is fully booted, just turn the bottom screen off and back on again and it will correct itself.
• If you ever used Rocknix (or another mainline distribution), this will affect your ability to restart or turn on the device. You must unplug and replug the battery to fix this issue. This happens if you ever used Rocknix on an SD card or flashed to eMMC at all.
• DraStic RetroAchievements currently supports Softcore mode only. Hardcore mode is pending approval from the RetroAchievements team, which can take up to around 6 months if they agree to it.
• Performance improvements are mainly for NDS/DraStic. Don't expect 3DS titles to run any better.

What's New in v1.4

DraStic-nano: faster DS emulation with RetroAchievements

The built-in Nintendo DS player has had a major performance pass on Android, with smoother frame pacing and lower overhead on the RG DS dual screens. It now also supports RetroAchievements (Softcore), so you can unlock achievements while you play. Hardcore mode is pending approval from the RetroAchievements team (roughly 6 months if they agree). Quick Resume lets you jump straight back into your last DS game right where you left off, with the save-state handoff held behind a clean preview so there is no black flash on return.

Three full home themes

The RG DS boots into the DSi System Menu theme by default, so it feels right at home on the dual screens out of the box. You can switch to any of the three themes at any time:

• DSi System Menu (default) - a faithful Nintendo DSi home for the dual panels, with the dual-screen carousel, glossy blue selection frame and DSi-style settings and dialogs on the bottom touch screen.
• PS3 XMB - a 1:1 recreation of the PlayStation 3 XrossMediaBar, complete with the animated wave wallpaper, glass icons with live light refraction, the analog clock and the authentic menu animations.
• Minima - clean, fast, minimalist themes inspired by MinUI and NextUI for people who just want to get into their games with zero fuss.

RG DS Control Center for single-screen apps

When you run a normal single-screen app fullscreen on the top panel, the bottom panel becomes a live Control Center: CPU/GPU/power/RAM gauges, temperatures, an analog clock, draggable volume and dual-brightness sliders and an 8-tile quick-settings grid. A second page lets you launch apps directly on the bottom screen, and you can switch controller focus between the two screens with a tap. If you don't want the second screen active, you can turn the bottom screen off entirely to save power.

Custom wallpapers, including video wallpapers

Set your own wallpaper behind the XMB and DSi homes, picked from your photo library. You can use a looping video wallpaper on the primary screen, and on the RG DS you can set separate wallpapers per screen. Every frosted panel, glass icon and the clock samples your chosen wallpaper so it all stays consistent.

In-game overlay on a power-button hold

No matter what you are playing, hold the power button to bring up the overlay menu right over your game. It dims the game behind it while it keeps running, so you can adjust brightness, change performance mode, jump into Quick Settings, or close and switch apps without losing your place, then dismiss it and drop straight back in.

Improved sleep mode

Sleep and wake have been reworked to be faster and more reliable. The device suspends properly, wakes cleanly and holds far less battery drain during standby, so you can put it down mid-game and pick it up later without the long idle and resume problems of the previous build.

Built-in media, browser and more

Nano includes self-contained music, video and photo players, a controller-first web browser, IPTV and Internet Radio, system-wide Network Shares (SMB/NFS/WebDAV/FTP that behave like local storage), a global search across your games and media, and the PSP Go slide clock summoned by the slide sensor. Boot speed and memory use have also been improved across the board.

Before You Download

This release ships as a single split archive (3 parts). There is one build: GammaOS Nano (no Google Services).

Download the package

Download all split archives:

• RG_DS_GAMMAOS_NANO_V1.4.7z.001
• RG_DS_GAMMAOS_NANO_V1.4.7z.002
• RG_DS_GAMMAOS_NANO_V1.4.7z.003

Extract

Extract all parts together (extract the .001 while .002 and .003 are in the same folder).

Install

Installation is the same process as before. Full installation steps are available here:
https://github.com/TheGammaSqueeze/GammaOSNext/wiki/GammaOS-Next-Installation#anbernic-rg-ds

Note: Installing will wipe all data. Back up your device first.
Remove any microSD card before flashing to avoid issues.

Overview

GammaOS Nano v1.4 is a ground-up rebuild of the RG DS experience, based on Android 14 / LineageOS 21. Where the previous v1.2.2 release used a standard Android launcher, v1.4 boots straight into a native, console-style home built for handhelds. This release focuses on a fast boot-to-play experience, three full home themes, a much-improved DraStic DS player with RetroAchievements, a dual-screen Control Center, custom and video wallpapers, and a lean footprint with no Google Services overhead.

Full Changelog

The complete, detailed changelog for v1.4 is available here:
https://github.com/TheGammaSqueeze/GammaOSNext/wiki/GammaOS-Next-Changelog#v14-july-2026

Support

For assistance or feedback, please open an Issue here:
https://github.com/TheGammaSqueeze/GammaOSNext/issues

Thank you for supporting GammaOS development and helping improve GammaOS Next for the Anbernic RG DS.