RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2

When upgrading ELRS receivers, there are two options: Wi-Fi and Serial Port. While Wi-Fi upgrading is user-friendly and does not require additional accessories, it can be susceptible to failures caused by unstable networks.For a more reliable and professional upgrade experience, RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2 is the solution. This dongle is designed specifically for ELRS receiver serial port upgrades, providing a dependable solution for flashing or recovering receivers. Features RM-CRSF JST-GH Interface Output Multiple Protective Circuits Standard Pin Compatibility Selectable Output Voltage Spring-Loaded Pin Socket DuPont Wires Included How to upgrade firmware 1. Connect the Serial Port Cable with the receiver2. Connect to the computer with a USB extension cable, press the receiver's BOOT button, then press the POWER button on the serial tool3. Follow the ELRS upgrade tool's instructions to complete the upgrade Specifications Interface Output: RM-CRSF