1. Add license for dock.
2. Modify the logic corresponding to the firmware file and device type.
3. Add multiple mqtt clients options.
4. Modify the structure of the interface for obtaining the device list.
5. Fixed some issues.
Added:
1. Device communication backup link switching.
2. Priority report of the media file uploading.
3. Upload firmware file.
4. HMS updated.
Fixed:
1. Closing the stream prematurely.
Note: There is a change in the structure of the table 'manage_device_firmware'.