Because in the distant past, I found that my Mavic Pro was being updated outside of published firmware cycles, abilities were appearing/disappearing without my authority or an acknowledgement that I was updating my drone.
DJI will still do that...
Of course there’s a change log, not. If there was it would only mention improvements and updates.
DJI are masters at adding restrictions and updating firmware silently, with owners only finding out when they try to do something and are prevented...
As a user of Litchi exclusively, I choose to remain blissfully unaware of all DJI firmware updates that are imposed on the unwary who still use DJI Go4. In addition to enjoying the superior performance of Litchi in comparison to DJI Go4...