My Iphone 5 has locked to icloud of previous owner after installing ios 9.3 and the previous owner refuses to unlock the phone
I have used mu iPhone for 2 years, but when installed ios 9.3 it has locked to the icloud of the previous owner.
Contacted the previous owner to unlock the phone but he refused
How can I downgrade to ios 9.2
iPhone 5, iOS 9.3