Flash or upgrade firmware
2026-09-20
Flash firmware in the browser (Chrome / Edge recommended).
Prepare
- Connect the device with a USB cable
- Open this site and tap Firmware flash on the left
- Close apps that may hold the serial port
Bootloader
- Hold BOOT
- Press RESET once
- Connect and pick the serial port in the browser dialog
Flash
- Choose model and edition
- Start flashing and wait until done
- Then complete Device authorization
Flashing and authorization are two steps — do them in order.