I followed the whole process step by step and did the update.
I also calibrated the drone exactly as requested by the application after completing update.
When I tap the drone icon at the top of the app I have this image that shows that the actual firmware update really exists.

When I click on the controller icon I have the image showing that the firmware version is 1.6.2 and not 1.6.3.

It's correct ;
Am I doing something wrong?
In the second image, the button next to the controller refer to the controller callibration or to the drone callibration?
What does controller calibration mean?
Whenever does it happen?
I also calibrated the drone exactly as requested by the application after completing update.
When I tap the drone icon at the top of the app I have this image that shows that the actual firmware update really exists.

When I click on the controller icon I have the image showing that the firmware version is 1.6.2 and not 1.6.3.

It's correct ;
Am I doing something wrong?
In the second image, the button next to the controller refer to the controller callibration or to the drone callibration?
What does controller calibration mean?
Whenever does it happen?