RadioMaster ExpressLRS USB UART Flasher V2

Features

• Upgraded USB-C interface
• Power button for easy ON/OFF power cycling
• Reverse polarity protection
• Over-voltage protection 
• Switchable power supply between 3.3V and 5V
• Standard 2.54mm pins
• RM-CRSF JST-GH port for simple plug-n-play connection with RadioMaster ER series receivers
• Pin sockets included
• Dupont cables for convenient testing

Compatible Receivers

Using 2.54mm pin output and spring-loaded pin adapter or Test hook adapters:

• All RP SERIES ELRS RECEIVERS

Using regular 2.54mm pin output (Servo plugs):

• ER3C-i 2.4GHz ELRS PWM Receiver
• ER5C-i 2.4GHz ELRS PWM Receiver
• ER4 2.4GHz ELRS PWM Receiver
• ER5A 2.4GHz PWM Receiver
• ER5A V2 2.4GHz PWM Receiver
• ER5C 2.4GHz PWM Receiver
• ER5C V2 2.4GHz PWM Receiver
• ER6G & ER6GV ELRS PWM Receiver

Please note: The second channel is repurposed as a TX for the serial port tool's RX port, while the third channel is repurposed as an RX connected to the serial port tool's TX port.

Firmware upgraded by RM-CRSF interface output:

• ER6 2.4GHz ELRS PWM Receiver
• ER8 2.4GHz ELRS PWM Receiver
• ER8G & ER8GV ELRS PWM Receiver

Please note: The above receivers can be connected to the receiver's CRSF port using a 4-wire CRSF cable.

Firmware upgrade instructions

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

• USB to UART driver
• USB UART Tool Connection Guide

Size