Can i install in my M2 note flyme Flyme 5.1.12.0G after flyme 6.7.3 beta?

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2017-03-08 13:28

i install yesterday flyme 6.7.3 bets after installing google play service is not working in my device.
now my device is useless.
plz suggest can i install again flyme Flyme 5.1.12.0G ?