The RadioMaster ExpressLRS USB UART Firmware Flashing Dongle V2 offers reliable ELRS receiver flashing and recovery via serial port, providing a stable alternative to Wi-Fi updates. Compatible with various ELRS receivers, it’s a must-have for dependable firmware management.

Note: This purchase requires assembly.

• 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

• 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

• 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