Maybe it was a little taste of what is possible from Google.
By itself, without flashing something, the thing is not done.?!
Google will certainly adjust a few more optimizations in the future.
My opinion
Is in the next stable version of Mi9 an adjustment of the fingerprint possible?
At the moment the Mi9 (Cepheus) turns out to be Mi8 (dipper).
A change would be desirable.
thanks