It's a simple matter to compare the specs.
Max flight time
Air 3S - 45 minutes
Mavic 4 pro - 51 minutes
Both are measured under laboratory conditions:
Measured by the aircraft flying forward at a constant speed of 32.4 kph in a windless...
What's in MiPushLog doesn't matter.
Is that the only folder you have in Android\data\dji.go.v5\files ??
You should be seeing something like this ....
Inside the FlightRecord folder, there should be all your flight records.
It's most unlikely that the firmware update made any changes to the camera's properties.
If it did, DJI would have trumpeted that.
It's very rare that firmware updates make any differences to anything that users would notice.
The exposure issue won't be related to the heat or battery issue.
But if you upload an original jpg to Google drive and post a link, someone might be able to check to see what might have happened there.
It looks like you've almost gone to the...