Korai Firmware

Fork of https://github.com/flipperdevices/flipperzero-firmware

Read the Docs

Check out details on how to build firmware, write applications, un-brick your device and more in documentation folder.

Update firmware

Get Latest Firmware from releases

Flipper Zero's firmware consists of two components:

• Core2 firmware set - proprietary components by ST: FUS + radio stack. FUS is flashed at factory, and you should never update it.
• Core1 Firmware - HAL + OS + Drivers + Applications.

They both must be flashed in the order described.

With offline update package

With Flipper attached over USB:

./fbt flash_usb

Just building the package:

./fbt updater_package

To update, copy the resulting directory to Flipper's SD card and navigate to update.fuf file in Archive app.

With STLink

Core1 Firmware

Prerequisites:

• Linux / macOS
• Terminal
• arm-gcc-none-eabi
• openocd

One-liner: ./fbt firmware_flash

With USB DFU

1. Download latest Firmware

2. Reboot Flipper to Bootloader

• Press and hold ← Left + ↩ Back for reset
• Release ↩ Back and keep holding ← Left until blue LED lights up
• Release ← Left

3. Run dfu-util -D full.dfu -a 0

Build on Linux/macOS

Check out documentation/fbt.md for details on building and flashing firmware.

macOS Prerequisites

Make sure you have brew and install all the dependencies:

brew bundle --verbose

Linux Prerequisites

The FBT tool handles everything, only git is required.

Optional dependencies

• openocd (debugging/flashing over SWD)
• heatshrink (compiling image assets)
• clang-format (code formatting)
• dfu-util (flashing over USB DFU)
• protobuf (compiling proto sources)

For example, to install them on Debian, use:

apt update
apt install openocd clang-format-13 dfu-util protobuf-compiler

heatshrink has to be compiled from sources.

Compile everything

./fbt

Check dist/ for build outputs.

Use flipper-z-{target}-full-{suffix}.dfu to flash your device.

Flash everything

Connect your device via ST-Link and run:

./fbt firmware_flash

Project structure

• applications - Applications and services used in firmware
• assets - Assets used by applications and services
• furi - Furi Core: os level primitives and helpers
• debug - Debug tool: GDB-plugins, SVD-file and etc
• documentation - Documentation generation system configs and input files
• firmware - Firmware source code
• lib - Our and 3rd party libraries, drivers, etc.
• scripts - Supplementary scripts and python libraries home

Also pay attention to ReadMe.md files inside those directories.