No icon for uploading beta testing firmware in Mission Planner

Ground Control Software Mission Planner
1

I am using Mission Planner v1.3.44, however, it is very strange that there are no options for me to upload beta testing firmware to my hardware. Has anyone else encountered similar problems?

2

Capture.PNG1251×750 216 KB

The screenshot of Mission Planner looks like this. There used to be text icons on the bottom right corner close to “Force PX4 Bootloader”

3

goto MP settings.
and change layout to advanced.