The stock firmware on your R36S is decent — but custom firmware transforms it into a completely different device. Here's everything you need to know about ArkOS, Knulli, and AmberELEC.
Why Switch to Custom Firmware?
- Better game compatibility and performance
- Beautiful, modern user interface
- Advanced features: netplay, RetroAchievements, scrapers
- Better save state management
- Active community support and updates
ArkOS
The most popular choice. Stable, well-documented, and easy to install. Best for users who want a reliable, set-and-forget experience.
Custom firmware is written to a card, not to the console. Flash a spare and your working setup stays untouched.
Knulli
The newest option with the most modern interface. Better PSP and Dreamcast performance than ArkOS. Best for power users who want cutting-edge features.
How to Install (Any Firmware)
- Download the firmware image for your R36S model
- Download Balena Etcher (free) on your PC or Mac
- Insert a new MicroSD card (32GB+ recommended)
- Flash the firmware image to the card
- Insert the card into your R36S and power on
- First boot takes 1-2 minutes — then you're done
Which Should You Choose?
- Beginner? ArkOS. It just works.
- Power user? Knulli. More features, better performance.
- Don't want to tinker? Keep stock — it's perfectly fine for casual play.
Browse our console range or pick up a retro console with custom firmware pre-installed.
Everything on this page assumes you have the hardware. Here is what it needs.