So far I know of two other cases with these same faults.
The two of the American continent, I do not know if that has any connection.
If you look closely at the first video, the bars that lose the signal are those of the GPS satellites. So do not expect great precision.
I agree with you, it should be possible to have more options in an image file to “update” to previous versions.
In this case the reflash is useless since the start window requires me to update my antennas to version 2.16.2.
Another suggestion is that the start window after reflash does not force you to update your antennas until you decide.