racedayquadsHOBBYPORTER· Tools & workshop
RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2
Manufacturer part no. 22723
$15.46≈ 13.40 €
Price summary
Listed by racedayquads at €13.40. Delivered to France, including shipping, VAT and any customs duty, it comes to about €34.08. Prices last checked on 2026-09-16.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
In stock
Estimated landed cost
| Item | €13.40 |
|---|---|
| Shipping | €15.00 |
| VAT (20%) | €5.68 |
| Total delivered | €34.08 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
Price history
3 price/stock records since 8/20/2026
Specifications (automatically extracted)
Mechanical
| Weight | 27 g |
Description
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 receiver 2. Connect to the computer with a USB extension cable, press the receiver's BOOT button, then press the POWER button on the serial tool 3. Follow the ELRS upgrade tool's instructions to complete the upgrade Specifications Interface Output: RM-CRSF JST-GH for ER series receiver compatibility Name: RadioMaster ExpressLRS USB UART Firmware Flashing Dongle Protective Circuits: Overcurrent and reverse polarity protection Pin Socket: Spring-loaded for enhanced convenience Included Accessories: DuPont wires for easy testing Pin Compatibility: Standard 2.54mm pins Output Voltage: Selectable 3.3V or 5V Manufacturer: RadioMaster IMPORTANT NOTES: The above receivers can be connected to the receiver's CRSF port by using a 4-wire CRSF cable Includes 1x RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2 1x 1.25mm Serial Port Cable - Type A 1x 2.54mm Serial Port Cable - Type B 1x Serial Port Test Hook - Green 1x Serial Port Test Hook - White 1x Serial Port Test Hook - Black 1x Serial Port Test Hook - Red 1x Pogo Probe 1x CRSF Wire 1x User Card
