RADIOMASTER ELRS Firmware Flashing Dongle V2.0

The RadioMaster ExpressLRS USB UART Flasher V2 is a comprehensive solution for upgrading and recovering your ELRS (Expresss LRS) receivers. Featuring an upgraded USB-C interface, this dongle offers a seamless and reliable firmware upgrade experience.

One of the key features of this device is the power button, which allows for easy on/off power cycling. This, coupled with the reverse polarity and over-voltage protection, ensures the safety and longevity of your receiver during the upgrade process.

The flasher boasts a switchable power supply, allowing you to toggle between 3.3V and 5V, catering to a wide range of compatible receivers. The standard 2.54mm pins and RM-CRSF JST-GH port facilitate a simple plug-and-play connection with RadioMaster ER series receivers, further enhancing the user experience.

When it comes to upgrading your ELRS receivers, you have two options: Wi-Fi and Serial Port. While Wi-Fi upgrading is user-friendly, it can be susceptible to failures caused by unstable networks, potentially resulting in a bad flash and the need for recovery.

This is where the RadioMaster ExpressLRS USB UART Flasher V2 shines. Designed specifically for ELRS receiver serial port upgrades, this dongle provides a dependable and professional solution for flashing or recovering receivers with a bad flash. The package includes a range of accessories, such as Dupont cables, test hook adapters, and a user card, ensuring a comprehensive and convenient upgrade experience.

The flasher is compatible with a wide range of ELRS receivers, including all RP SERIES ELRS RECEIVERS, using the 2.54mm pin output and spring-loaded pin adapter or test hook adapters. Additionally, it supports regular 2.54mm pin output (Servo plugs) for receivers such as ER3C-i, ER5C-i, ER4, ER5A, ER5A V2, ER5C, and ER5C V2.

For ER6G, ER6GV, ER6, ER8, ER8G, and ER8GV ELRS PWM Receivers, 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. These receivers can be connected to the CRSF port using a 4-wire CRSF cable.

The firmware upgrade process is straightforward. Simply connect the Serial Port Cable with the receiver, connect to the computer with a USB extension cable, press the receiver's BOOT button, and then press the POWER button on the serial tool. Follow the ELRS upgrade tool's instructions to complete the upgrade.

In summary, the RadioMaster ExpressLRS USB UART Flasher V2 is a reliable and versatile solution for upgrading and recovering your ELRS receivers. Its robust design, safety features, and comprehensive compatibility make it an essential tool in the arsenal of any drone enthusiast or professional.

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