Firmware for FujiNet can be flashed using the cross platform flash tool provided below or with the browser based flasher at (Google Chrome, Chromium, Opera or Microsoft Edge browsers only)

Download the program for your operating system below. NOTE: This flash tool only supports official FujiNet hardware. If you have built your own custom FujiNet with different specs then you may need to build and flash the code manually.

FujiNet-Flasher v1.4.1 updated Jan 24, 2023

FujiNet-Flasher Windows x64
FujiNet-Flasher Windows x86
FujiNet-Flasher MacOS 10.15 Catalina thru 13 Monterey
FujiNet-Flasher MacOS 10.9 Mavericks thru 10.14 Mojave
FujiNet-Flasher Linux x64
FujiNet-Flasher Ubuntu 22.04

You may also need to install the CP210x USB to UART driver which is available from

Detailed usage of FujiNet-Flasher is available on the Wiki

Source code for FujiNet-Flasher is available at

NOTE: Some Windows users have reported the FujiNet Flasher will not run on their system and shows no error message (double clicking the program and nothing happens). The way around this Windows bug is to create a new user account and run FujiNet-Flasher from the new account.

TNFS Server

Pre-compiled binaries for the FujiNet TNFSD server are available below. Our custom tnfsd source code is available on Github. Information on setting up the TNFSD server is on the Wiki.

tnfsd for Windows 10 64 Bit
tnfsd for MacOS (intel)
tnfsd for MacOS (m1 apple silicon)
tnfsd for Linux 64 Bit
tnfsd for Raspberry Pi (armhf)