GammaOS Next

GammaOS Next is a highly customized Android firmware for handhelds, built on both Android 13 / LineageOS 20 and Android 14 / LineageOS 21 depending on device. It delivers a streamlined, performance-optimized experience with extensive tweaks to improve responsiveness, battery life, visual quality, and user control.

Features

Core System

• Android 13 / LineageOS 20 & Android 14 / LineageOS 21
  Modern, debloated bases tuned for handheld use, with reduced background overhead and a focus on smooth, consistent performance.
• Full & Lite Editions
  • Full: Includes Google Play Store, Google Play Services, and Google-dependent components for users who rely on Google account sync and Play Store distribution.
  • Lite: Ships without Google services for a minimal, self-contained handheld environment, ideal for users who sideload or use alternative stores.
• Aurora Store (where included)
  Seamlessly sideload apps without needing a Google account.

User Interface & Navigation

• Daijisho Launcher
  Pre-configured for RetroArch on supported devices (GB, GBC, GBA, NES, SNES, Genesis, PSX). BIOS files must be supplied by the user.
• App Drawer in Navigation Bar
  Instantly access any installed app from the navigation bar without returning to the home screen.
• Screen Rotation Controls
  Enforce landscape-first behavior when rotation is disabled, keeping games and apps in a consistent orientation.
• Immersive Mode
  Console-style fullscreen experience with status/navigation bars hidden by default and accessible via edge swipes or Quick Settings.

Input & Controls

• Universal Button Remapping
  Remap any physical button to any key or input, giving full control over your gamepad layout.
• Analog Stick Calibration
  Fine-tune stick range and deadzones to correct drift and improve precision.
• L2/R2 Fixes
  Corrected L2/R2 handling on supported devices for better compatibility in games and apps.
• Layout Persistence
  Once you select a button layout (e.g. Xbox, Nintendo-style), it persists across reboots.

Display, Shaders & Lighting

• Global Shader Pipeline (on supported devices)
  System-wide post-processing shaders such as CRT-Simple and LCD3x, integrated at the display pipeline and configurable via a dedicated Shader Quick Settings tile.
• Global BFI (Black Frame Insertion, on supported devices)
  Integrated BFI path to improve motion clarity on supported panels and refresh-rate configurations.
• HDMI Docking Mode (on supported devices)
  When connected to HDMI, the internal screen can power down and the system resizes to the external display’s resolution for a docked “console” experience.
• DC Dimming Emulation
  Reduces perceived PWM flicker on panels that exhibit it, improving comfort in long sessions.
• GammaRGB LED Sync (on supported devices)
  Mirrors on-screen colors to RGB LEDs, and synchronizes LED brightness with display brightness.
• 60 Hz Refresh Rate & Oversharpening Fixes (where applicable)
  Corrected refresh behavior and oversharpening fixes on devices that require it.

Performance, Power & Audio

• Performance Governors & Modes
  CPU, GPU, and related components are tuned to clear performance profiles:
  • Max Performance: Highest performance, highest power draw.
  • Normal Performance: Dynamic scaling based on load.
  • Power Save: Lower frequencies for extended battery life (ideal for light emulation).
• Quick Settings Tiles
  One-tap toggles for performance profiles, analog sensitivity, ABXY remapping, axis inversion, D-pad/analog swap, shaders, BFI, HDMI docking behavior, Deep Sleep Mode, and more.
• Deep Sleep Mode (cgroup Freeze)
  Force-freezes background apps to prevent emulators or other apps from running unnecessarily. Use with care, as some apps may not resume correctly.
• GammaEQ (on supported devices)
  System-level audio equalizer integrated near the audio fast-mixer path, with a dedicated UI on newer builds for managing presets and tuning without manual properties.

Root & Modding

• Magisk Root
  Pre-installed root access via Magisk on supported devices, ready for modules, custom tweaks, and deeper system modifications (subject to OS version constraints).

Storage & Security

• Relaxed Scoped Storage
  Loosened storage constraints (where appropriate) so front-ends, emulators, and tools can access files more easily without constant permission friction.

Enjoy the combination of performance, flexibility, and console-like UX that GammaOS Next brings to Android handhelds.

Supported Devices

| Device | Release | |--------------------------------------|------------------------------------------------------------------------------------------| | Anbernic RG477M | GammaOS Next - Anbernic RG477M - v1.2.1 | | Anbernic RG477V | GammaOS Next - Anbernic RG477V - v1.2.1 | | Anbernic RG557 | GammaOS Next - Anbernic RG557 - v1.2.1 | | Anbernic RG556 | GammaOS Next - Anbernic RG556 - v1.2 | | Anbernic RG Cube | GammaOS Next - Anbernic RG Cube - v1.2 | | Anbernic RG406H | GammaOS Next - Anbernic RG406H - v1.2 | | Anbernic RG406V | GammaOS Next - Anbernic RG406V - v1.2 | | Anbernic RG476H | GammaOS Next - Anbernic RG476H - v1.2 | | Anbernic RG Slide | GammaOS Next - Anbernic RG Slide - v1.2 | | Anbernic RG405M / RG405V / RG505 | GammaOS Next - Anbernic RG405M / RG405V / RG505 - v1.1 | | Anbernic RG DS | GammaOS Next - Anbernic RG DS - v1.2.2 | | AYANEO Pocket Micro | GammaOS Next - AYANEO Pocket Micro - v1 | | AYANEO Pocket-S / DMG | PLANNED | | AYANEO Pocket AIR | PLANNED | | Retroid Pocket 4 PRO | GammaOS Next - Retroid Pocket 4 Pro - v1 | | Retroid Pocket Mini v1/v2 | PLANNED | | Retroid Pocket Flip 2 | PLANNED | | Retroid Pocket 5 | PLANNED | | Retroid Pocket Classic | GammaOS Next - Retroid Pocket Classic - v1 | | KT Pocket KT-R1 | GammaOS Next - KTPocket KT-R1 - v1 | | ZPG Unicorn A1 | GammaOS Next - ZPG A1 Unicorn - v1 | | GameMT E6 MAX | GammaOS Next - GameMT E6 Max - v1.1.0 | | Powkiddy X28 | PLANNED | | Mangmi Air X | GammaOS Next - Mangmi Air X - v1.2 |

Download & Changelog

• Download Latest Release: GammaOS Next Releases
• Changelog: See the GammaOS Next Changelog for detailed per-device updates.

Installation

For installation instructions, including brand-new installs, upgrades from previous versions, and returning to stock firmware, refer to the official GammaOS Next documentation:

• Installation Guide

Credits

• TheGammaSqueeze – Lead development and maintenance
• Contributors & Testers – Community support, feedback, and QA (support on https://www.patreon.com/GammaOS)
• LineageOS Team – Upstream Android 13 / LineageOS 20 and Android 14 / LineageOS 21 sources

GammaOS Next brings a console-focused, highly tunable Android experience to your favorite handheld devices, with a clear focus on performance, control, and long-term playability.