rusEFI offers complete software download bundles for multiple supported microcontrollers and boards.

IMPORTANT NOTE: TunerStudio v3.1.04 or later is REQUIRED! Please double check the version before updating your firmware, or your settings could be lost when updating

Common Boards

microRusEFI 0.4 and newer (STM32F4)


STM32 Discovery Release

Hellen Family Boards

Nissan 121 pin

VAG 121 pin

Mercedes 128 pin

Miata NBT 72 pin

Miata NA6 64 pin

Uncommon Boards

Discovery stm32f407 bundle

Frankenso PnP Miata NA6 bundle

microRusEFI 0.3 and older (STM32F7)

Proteus 0.2 and older (STM32F7)


Older Releases

Nightly Builds

Snapshot Builds

Quick Start

Choose Your Own Adventure

Virtual Simulator


Q: I see something interesting was just changed in the firmware? How do I use latest version?

A: Most snapshot builds take about 30 minutes to get updated on at Snapshot builds