When upgrading ELRS receivers, there are primarily two options: Wi-Fi and Serial Port. While Wi-Fi upgrading is very user-friendly and doesn't require additional accessories, it can be susceptible to failures caused by unstable networks. For a more reliable and professional upgrade experience, RadioMaster ExpressLRS UART Flasher is your solution. This dongle is designed specifically for ELRS receiver serial port upgrades, providing a dependable and professional solution for flashing or recovering receivers with a bad flash. Features: 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 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 ReceiverER5C-i 2.4GHz ELRS PWM ReceiverER4 2.4GHz ELRS PWM ReceiverER5A 2.4GHz PWM ReceiverER5A V2 2.4GHz PWM ReceiverER5C 2.4GHz PWM ReceiverER5C V2 2.4GHz PWM ReceiverER6G & ER6GV ELRS PWM Receiver Please note: The second channel is repurposed as a serial TX, connected to the RX port of the serial port tool. The third channel is repurposed as RX, connected to the TX port of the serial port tool.Firmware upgraded by RM-CRSF interface output:ER6 2.4GHz ELRS PWM ReceiverER8 2.4GHz ELRS PWM ReceiverER8G & ER8GV ELRS PWM Receiver Please note: The above receivers can be connected to the receiver's CRSF port by using a 4-wire CRSF cable.How to upgrade firmware: 1. Connect the Serial Port Cable with receiver2. Press the receiver's BOOT button, and insert the serial port tool into your computer3. Follow the ELRS upgrade tool's instructions to complete the upgrade Dimensions: Includes:1x Radiomaster ExpressLRS USB UART Flasher1x Pogo Probe1x 1.25mm Serial Port Cable - Type A1x 2.54mm Serial Port Cable - Type B1x Serial Port Test Hook - White1x Serial Port Test Hook - Green1x Serial Port Test Hook - Red1x Serial Port Test Hook - Black1x User CardDownloads: USB to UART driverUSB UART Tool Connection Guide
