OnyxOS

A custom firmware for the Flipper Zero, built for a cleaner, more professional experience.

Forked from the official Flipper Zero firmware.

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What's Different

• Custom boot splash screen
• Pro UI redesign (in progress)
• Built and maintained by GhostOnyx

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Development

OnyxOS is written in C, following the same architecture as the upstream Flipper Zero firmware.

Requirements

• Windows 10+ with PowerShell and Git
• macOS 12+ with Command Line tools
• Ubuntu 20.04+ with build-essential and Git

Cloning

git clone --recursive https://github.com/GhostOnyx/OnyxOS.git

Building

./fbt

Flashing via USB

./fbt flash_usb

Flashing via debugger

./fbt flash

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Project Structure

• applications - Applications and services
• applications_users - Custom user applications
• assets - Icons, animations, and UI assets
• furi - OS-level primitives and helpers
• lib - Libraries and drivers
• targets - Platform-specific firmware code
• scripts - Build utilities
• documentation - Docs and guides

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Links

• GitHub: github.com/GhostOnyx
• Base firmware docs: developer.flipper.net