No, just flash LineageOS.
Because the software life-cycle of that phone is over. It happens to every device.
please give us Android pie update.
battery was not working properly.
Are you sure you are talking about the OnePlus X ?
OP stopped updating it 2 years ago. Do you think they are going to come back to do it ?
Clearly, no hope at all...
Go to custom Rom. I'm on Pie since last august...
Gamme OnePlus 7 : Avis et faites passer le mot.
by Vito B., 2019-06-17