I recived my onda v10 pro with firmware 1.0.1V5(without phoneix), the brightness was very high at the minimun level, I flashed 1.0.5V5(with phoneix) firmware and the brightness is better but yet is higher than the other tablet or phone al the minimum level, At night I use app “schermo notturno” for reduce the brightness level but it slow down the tablet, but not too… I don’t know other solution.
For the google play services I resolve with aptoide, aptoide update automatically my google play services to version 11.7.30(846-168248668) and all google apps works well(I try gmail, you tube, chrome)
For the moment i stay with version 1.0.5v5 the best in my opinion for this tablet at the moment, 1.0.4V5 is the same.
in my opinion version v6 and v7 doesen’t work for v5 version, i understood on the russian forum that v6 and v7 version do not allow the tablet’s battery to be recharged if they flashed on v5 version tablet, but I use google translate to read the forum and not is all clear