I updated it 2 days ago (GH850, no brand, no hard reset) and everything is working well so far.
The only thing that has not changed from previous version is wi-fi detection.
At home I have an Ubiquiti Lite (dual band) access point and in the room where the signal is the weaker, my G5 shows "weak signal" and "2 Mbps" (2.4 GHz band, 5 GHz is not detected) but P9 Lite of my daughter shows "good signal" and "24 Mbps" !
Regards,
Roberto