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Jumper R9 Mini

Setup-Banner

  • Target: Jumper_RX_R900MINI_via_STLINK

  • Device Category: Jumper R900

  • Device: Jumper RX R900MINI

via STLink

Flashing via STLink

Wire it up to your STLink V2 as follows:

Wire + = 3v3, - = GND, C = CLK and D = DIO to their respective pins on the RX from the StLink.

Jumper R9 Mini

Because those pins are so small one option is to only solder a wire on the CLK and DIO then power it with the 5v pin with an external power source.

Disable 'Readout Protection'. To do this download the ST-LINK Utility and follow this quick how to video. Or alternatively under linux you can use OpenOCD.

How to video:

Using the correct target specific for your receiver, and your Firmware Options set, click Build & Flash on the ExpressLRS Configurator.

Build & Flash

After the flash is successful, desolder the STLink and connect RX2 and TX2 (you will need to solder on the STM32 pins, see picture) to a flight controller and setting up the receiver with the CRSF serial protocol.

Updating via Passthrough

  • Target: Jumper_RX_R900MINI_via_BetaflightPassthrough

  • Device Category: Jumper R900

  • Device: Jumper RX R900MINI

via Passthrough

Updating via Passthrough

After flashing via STLink, the Jumper_RX_R900MINI_via_BetaflightPassthrough target may now be used for future firmware updates. Select the target and set your Firmware Options and once done, click on Build and Flash.

Build & Flash