how to lock bootloader

[DROID MONSTER]

I un-rooted my nexus, and I'm running stock 4.2.2, but I need to lock my boot loader, I used nexus tool kit to root, and un-root, but that was before I got 4.2.2,,, nexus tool kit only goes up to 4.1.1, how can I lock my boot loader???

 

[CJM]

You could lock it with fastboot in the bootloader. The command would be "fastboot oem lock".

Tapped from a Nexus