Skip to content

Siyi FR Mini

Setup-Banner

Note

This is only guaranteed to work on the v3.0 of the receiver.

  • Target: FM30_RX_MINI_via_STLINK (First-time Flash)

Note

The only way to flash the FR Mini is using STLink. This is a one-way process, there is no returning to the stock firmware after flashing.

pinout

stlink

Siyi FR Mini
  • Connect wires to DIO (SWDIO), CLK (SWCLK), RST, and GND to the header points on the RX
  • Attach 3.3V to the VDD pad on the flashing header. Do not connect 5V here! 🔥
  • Flash using the FM30_RX_MINI_via_STLINK target in the ExpressLRS Configurator

via STLink

Flashing via STLink

For more information and troubleshooting of the STLink connection, see the detail on the FM30 Initial Flashing page.

Once flashing is complete, wire the receiver to your flight controller using the images below.

Flight Controller FR Mini Receiver
5V VDD
GND GND
RX TX2
TX RX2

pinout

pinout

Thank you @JupaCreations for contributing.

Updating via Passthrough

  • Target: FM30_RX_MINI_via_BetaflightPassthrough (Updates)

via Passthrough

Updating via Passthrough

Updating is done via Betaflight Passthrough with the receiver wired to the flight controller. Be sure the transmitter is off, use the FM30_RX_MINI_via_BetaflightPassthrough target in the ExpressLRS Configurator and once done, click on Build and Flash.

Build & Flash