Oppo A5s CPH1909 Passcode & FRP done.. 
open mrt_v3.21
select oppo and model
press volume up volume down
install drivers if needed
wait till done..
after success dial *#813#
go to settings about phone click version 3 to 4 times to open the developer
open developer click debug and OEM
after factory reset..
open mrt_v3.21
select oppo and model
press volume up volume down
install drivers if needed
wait till done..
after success dial *#813#
go to settings about phone click version 3 to 4 times to open the developer
open developer click debug and OEM
after factory reset..