sm-a510fd FRP LOCK Reset please. ashyx ??

My phone says custom binary blocked by frp lock! How do i fix i can't flash custom rom please help me...

Model: SM-A510FD

it can't flash massage appears

custom binary blocked by FRP Lock ?

it can start up how i can unblock OEM
enable OEM unlock in developer settings. ??

from xda-developers http://ift.tt/28PzrYQ
via IFTTT