explaingit

flipperdevices/flipperzero-firmware

Analysis updated 2026-06-24

15,980CAudience · developerComplexity · 5/5Setup · hard

TLDR

Official firmware for the Flipper Zero portable hardware hacking device. C source for NFC, BLE, infrared, one-wire, and other radio protocols on ARMv7M.

Mindmap

mindmap
  root((flipperzero-firmware))
    Inputs
      C source
      ARM toolchain
      Hardware peripherals
    Outputs
      Device firmware binary
      Protocol apps
      User interface
    Use Cases
      Flash custom firmware
      Add a new app or plugin
      Reverse-engineer a protocol
    Tech Stack
      C
      ARMv7M
      FreeRTOS
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Code map

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filefunction / class

What do people build with it?

USE CASE 1

Compile and flash the official firmware to your own Flipper Zero

USE CASE 2

Write a custom Flipper app that drives NFC or infrared peripherals

USE CASE 3

Study the C source to learn embedded protocol handling on ARM Cortex-M

What is it built with?

CARMv7MFreeRTOS

How does it compare?

flipperdevices/flipperzero-firmwaredavatorium/rofishadowsocks/shadowsocks-libev
Stars15,98016,06416,159
LanguageCCC
Setup difficultyhardeasymoderate
Complexity5/53/54/5
Audiencedeveloperops devopsops devops

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1day+

Needs the ARM cross-compile toolchain plus the physical Flipper Zero device to flash and test.

In plain English

Flipper Zero is a small, portable hacking and hardware research device. This repository contains the official firmware, the software that runs directly on the device. Based on the description and topics, the firmware supports a range of wireless and physical communication technologies: NFC (the technology used in contactless payment cards and key fobs), Bluetooth Low Energy (BLE, used for connecting to smartphones and other nearby devices), infrared (used in TV remotes and similar devices), and other protocols. The topics also list ARMv7M, which is the type of processor the Flipper Zero uses. The README does not provide further detail about its features, architecture, or use cases, so a complete explanation is not possible from the provided data alone.

Copy-paste prompts

Prompt 1
Walk me through building flipperzero-firmware from source on macOS with the arm-none-eabi toolchain
Prompt 2
Show me how to add a new Hello World app to the Flipper Zero firmware and run it on the device
Prompt 3
Explain how the NFC stack is wired into the main firmware loop in flipperzero-firmware
Prompt 4
Help me flash a freshly built flipperzero-firmware binary without bricking my device

Frequently asked questions

What is flipperzero-firmware?

Official firmware for the Flipper Zero portable hardware hacking device. C source for NFC, BLE, infrared, one-wire, and other radio protocols on ARMv7M.

What language is flipperzero-firmware written in?

Mainly C. The stack also includes C, ARMv7M, FreeRTOS.

How hard is flipperzero-firmware to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is flipperzero-firmware for?

Mainly developer.

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