You can't unlock it with the Lollipop bootloader. You'd have to flash the 12B about.img and another file, I think. I also think you'd have to downgrade first, but I'm not 100% sure on that. You might not have to.Decided to go for it this past long weekend. unrooted the phone and let Verizon OTA upgrade to the latest release. It was already like a new install so I just FDR again just for the heck of it.
Rooted the phone using one click method and it is good so far. Battery life is almost the same.. Just the google play service running at 4%
Anyway to see if the bootloader is unlocked?