custom-firmware

A step-by-step routine for backing up your game saves and save states before flashing new firmware — locate them, copy them off the card, flash, restore, and verify nothing was lost.

A clear system for organizing your ROM library and BIOS files on any retro handheld — folder structures by firmware, BIOS placement, and how to keep saves, states, and box art tidy.

ROCKNIX is the first custom firmware to bring native Steam and Proton to Android handhelds. Here's how to install it on the Retroid Pocket 6, AYN Thor, AYANEO Pocket DMG, or any other supported Snapdragon device — and what to actually expect from Steam on ARM.

The differences between Linux and Android retro gaming handhelds explained. Covers setup complexity, emulation performance, custom firmware options, and which OS fits your needs.

How to install and configure GammaOS on your Anbernic Android handheld. Transform the stock experience with a gaming-focused launcher, better controls, and optimized emulator settings.

A head-to-head comparison of the three most popular retro handheld custom firmwares — muOS, KNULLI, and Onion OS — covering features, performance, ease of use, and which devices each supports.

Flash KNULLI custom firmware on your Anbernic handheld — a step-by-step guide from a blank microSD card to a fully configured retro gaming machine.

Flash muOS on your Anbernic RG35XX Plus, RG40XX H, or RG40XX V — a lean RetroArch-first launcher with fast boot times, PortMaster, and minimal overhead.

Flash KNULLI on your Anbernic RG35XX Plus, RG40XX H, or RG40XX V — EmulationStation frontend, per-game settings, WiFi file transfer, and PortMaster included.