RC Radios>ExpressLRS

RadioMaster ExpressLRS UART Firmware flashing Dongle

4.00 out of 5
(1 customer review)

Unlock precision control with RadioMaster’s ExpressLRS UART Dongle. Upgrade now for unmatched radio reliability and performance.


or 6 weekly interest free payments of NZD $4.16 with

In Stock at KiwiQuads

Ships from our Tauranga warehouse
SKU: 2265 Categories: , , , Tag:


Take command of your radio communication with RadioMaster’s ExpressLRS UART Dongle. Effortlessly upgrade firmware for unmatched reliability and precision in every transmission. Streamline your control setup and optimize performance with this indispensable tool. Whether for hobbyist or professional use, ensure seamless connectivity and superior range. Transform your radio experience with RadioMaster’s advanced technology.


  • Equipped with multiple protective circuits, including overcurrent and reverse protection
  • Optionable 3.3V and 5V output voltage
  • Standard 2.54mm pins
  • RM-CRSF JST-GH interface output for versatile connectivity with compatible ER series receivers
  • Featuring a spring-loaded pin socket for enhanced convenience
  • Comes with DuPont wires for easy testing

How to upgrade firmware:

1. Connect the Serial Port Cable with receiver
2. Press the receiver’s BOOT button, and insert the serial port tool into your computer
3. Follow the ELRS upgrade tool’s instructions to complete the upgrade


Package Includes:

  • 1 * RadioMaster ExpressLRS USB Uart Flashing Tool
  • 1 * Pogo Probe
  • 1 * 1.25mm Serial Port Cable – Type A
  • 1 * 2.54mm Serial Port Cable – Type B
  • 1 * Serial Port Test Hook – White
  • 1 * Serial Port Test Hook – Green
  • 1 * Serial Port Test Hook – Red
  • 1 * Serial Port Test Hook – Black
  • 1 * User Card

Additional information



1 review for RadioMaster ExpressLRS UART Firmware flashing Dongle

  1. 4 out of 5

    Bruce (verified owner)

    The Dongle works well with the Pogo Probe, but the individual Serial Port Test Hooks are weak and fall off easily.

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