custom-firmware

ROCKNIX shipped its first new stable build in over a year on June 1, 2026, now covering around 66 devices. Here is what changed and what is supported.

Evercade sells legal cartridges with zero setup. Firmware handhelds play your own files. Here is how they compare on legality, library, and value.

How to install AmberELEC, the feature-rich EmulationStation firmware for RK3326 and RK3566 handhelds like the Anbernic RG351 and RG353. Flashing, WiFi, and games.

How to install and set up ArkOS custom firmware on RK3326 and RK3566 handhelds like the RG351 and RGB10. SD cards, WiFi, and emulators covered.

How to set up Batocera, the all-in-one Linux emulation OS that runs on handhelds, PCs, and single-board computers. Flashing, WiFi, scraping, and adding games.

How to install CrossMix OS, the feature-rich custom firmware for the Trimui Smart Pro and Brick. A polished, all-in-one setup with great emulator support and tools.

How to set up NextUI and MinUI, the minimal pick-up-and-play frontends for the Trimui Brick, Miyoo Mini, and more. Clean menus, fast boot, and long battery life.

How to install Spruce, the popular custom firmware for the Miyoo Mini Plus. A polished, feature-rich alternative to Onion OS with a clean look and handy tools.

A simple routine for backing up game saves before flashing new firmware. Locate them, copy them off the card, flash, restore, and verify nothing is lost.

A clear system for organizing your game library and BIOS files on any handheld. Folder structures by firmware, BIOS placement, and tidy saves.

ROCKNIX is the first custom firmware to bring native Steam and Proton to Android handhelds. Here is how to install it and what to expect from Steam on ARM.

Linux vs Android retro gaming handhelds explained. Setup complexity, emulation performance, custom firmware options, and which OS fits your needs.

How to install and configure GammaOS on your Anbernic Android handheld. Get a gaming-focused launcher, better controls, and tuned emulator settings.

A head-to-head of the three most popular handheld firmwares. muOS, KNULLI, and Onion OS compared on features, performance, ease, and device support.

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.