Firmware for FujiNet can be flashed using the easy cross platform flash program. Download the program for your operating system below. NOTE: This flash tool only supports FujiNet hardware with 8MB PSRAM and 16MB flash. If you have built your own custom FujiNet with different specs then you must build and flash the code manually.

Latest Firmware Version Info:

FujiNet Version: 0.5.593c91f8
Version Date/Time: 2020-11-20 02:05:40
Build Date/Time: Fri Nov 20 02:41:36 UTC 2020
f9198c848dba6f2cce59f146cbdde08d spiffs.bin
b0e4fc352f5f3f54c4089535171e3ccb firmware.bin
24ad324b178eb58eda3a84f2fe914193 partitions.bin
3b5c6333d1f4cef6b8712919ed2a62cd bootloader.bin
e6327541e2dc394ca2c3b3280ac0f39f boot_app0.bin
Git Commit: cb2cd42d

View Commits Since Last Build

[cb2cd42d] do not status count at all if romdisk disabled.

FujiNet-Flasher Windows x86
FujiNet-Flasher Windows x64
FujiNet-Flasher MacOS Catalina 10.15
FujiNet-Flasher Linux x64

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

Connect the FujiNet to your computer with a MicroUSB cable. Run the flash program with elevated privileges (as administrator or root user) so that it may access the serial port. Select the correct serial port for your FujiNet then click the Flash ESP button. The latest firmware is automatically downloaded directly from the web server and installed to the FujiNet device. The log window will display the flashing progress.

All the firmware files are available individually at

Source code for the flash program is available at


Pre-compiled binaries for the FujiNet TNFSD server are available:

tnfsd for Windows 10 64 Bit
tnfsd for Linux 64 Bit
tnfsd for armhf (Raspberry Pi)

Our FujiNet custom tnfsd source code is available in our Github