How to flash the firmware and license to the device? Where can I download the flashing software?

Enter the Tuya PMS register an account, and log in. Click Download Software to download the Tuya network module Burning Authorization Platform.

For more details about the Procedure, please see: https://developer.tuya.com/en/docs/iot/overview-of-download-firmware-and-authorization?id=Ka4zcqfo0eb5u#title-4-Procedure