If refund option is open for you go for it. Later you can buy new handset of some other brand. I am using it for last 3-4 months, not facing much...
Indian Invite pls mail me at [DELETED BY MODERATOR]
mail me @ [DELETED BY MODERATOR] for Indian Invite
mail me on firstname.lastname@example.org
I have three Oneplus 2 Indian Invite let me know if any one needs it.
Update is working fine on my OP2. Try taking back of data and then factory reset