how boat loader can be locked?
By defaults it's always Locked
but in my case its not
Lock it by reversing command used to unlock it.
i.e. "fastboot oem lock"
(There are plenty of guides/tutorials on how to setup and use fastboot in case you bought the phone 2nd hand and already unlocked.)
Raffles 2019/05/15: Launch Event Goodie Bag & OnePlus Bullets Wireless 2
by Crystal Z., 2019-05-16