RT-900 BT

BLE MCU Flasher

Flash custom ARM MCU firmware to your RT-900 BT wirelessly via Bluetooth Low Energy. Flash directly from your browser via Bluetooth — no cable needed.

Browser not supported

Web Bluetooth requires Chrome or Edge on desktop. Safari and Firefox do not support Web Bluetooth.

Select Firmware

No file selected

Your browser will prompt you to select the RT-900 Bluetooth device.

How to Flash via BLE

  1. Make sure your RT-900 BT is powered on with Bluetooth enabled
  2. Select a .bin firmware file above
  3. Click Connect & Flash
  4. In the browser popup, select your RT-900 device
  5. Wait for the flash to complete. The radio will reboot automatically.

How it works

Connects to the radio via Bluetooth Low Energy, authenticates, erases flash, writes firmware in 1024-byte blocks with CRC verification, then reboots the radio.

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