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southoz edited this page Jan 22, 2026
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Customized dArkOS firmware for G80CA-MB V1.2 R36S clones Bringing the bests dArkOS experience to your G80CA. Perfect for retro emulation on G80CA hardware with tweaks for seamless performance, controls, and battery management.
- Base: Modified dArkOS RG351MP firmware with dArkOS hardware layer compatibility.
- Target: G80CA-MB V1.2 clones (R36S-style devices with Panel 8 or 9 screens).
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Key Enhancements:
- Function button integration.
- Support for Hotkey Volume, Brightness and Gamma controls.
- Native joystick mapping (RG351MP layout).
- Full Wi-Fi support (rtl8192cu, rtl8821cu, rtl8812au, mt7601u).
- Audio (speakers + headphones).
- Optimised battery charging (800mAh) and shutdown voltages.
The device's LED is fully managed by dArkOS Battery LED services.
| Color | Status |
|---|---|
| Blue | Normal operation (battery ≥20%) |
| Violet & Red (blinking) | Low battery warning (<20%, or critically low voltage) |
| Pink & Blue (blinking) | Charging (plugged in) |
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Fresh Install: Firmware Installation Guide
- Supports Panel 8 (standard DTB) & Panel 9 (DTB swap required).
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Upgrade (Preserve ROMs): Firmware Upgrade Guide
- Dual-SD setup recommended (OS on right slot, ROMs on left EASYROMS).
- USB Tethering
Common fixes at your fingertips:
| Issue | Solution |
|---|---|
| Black Screen | Hold power button 10s, release, press 2s to reboot. |
| Fuzzy lines / Wrong display | Power off, remove battery 10min, reflash with correct DTB (Panel 8/9). |
| Grey overlays/shaders | WIP guide coming—disable via config edits (inspired by upstream dArkOS). |
| Stuck on logo | Verify image hash, reflash, try new SD card (SanDisk/Kingston recommended). |
- Repository – Source, files, & updates.
- Upstream dArkOS
- Communities: r/R36S, r/SBCGaming, Retro Handhelds Discord.
Credits: Built on aArkOS & dArkOS – huge thanks to christianhaitian & the community!
Last updated: Jan 8, 2026. Questions? Open an issue or ping @southoz. ✨
- Firmware Installation
- Firmware Upgrade
- Audio and Screen Controls
- EmulationStation
- Retroarch Hotkeys
- Kodi
- PortMaster
- Customising your Device
- Arcade (arcade)
- CAPCOM Play System 1 (cps1)
- CAPCOM Play System 2 (cps2)
- CAPCOM Play System 3 (cps3)
- MAME 2003 (mame2003)
- MAME 2010 (mame)
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The guides below are for ArkOS-G80CA; once they are above this marker, they are relevant.
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