Opn Firmware 5 Iphone 6s connectivity problems

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#1

As soon as I updated my opns I have serious problem with my Iphone bluetooth phone calls. Looks like is connecting and disconnecting all the time while speaking on a call. I Have done the whole procedure alone through Hi-pro. Already read that is a common an well kown to apple problem that they are looking after. But phone calls are essential for me, and untill this update the bluetooth connectivity was working perfectly… so any suggestions please ?