Quote Originally Posted by crab987 View Post
Has anyone noticed that original Garmin map update now has file D3191090A.unl alongside D3191090A.JCV in .System\JCV folder? What's with that? Are JCV files now locked?
This is something New, It has been noticed by some users.
I don't believe JCV is locked at this stage, If you want you can test by backing up the unl file to hard disk and then deleting the unl file from the Nuvi to see if jcv stops working and report back here.
I think for JCV lock they would have to update the firmware. Maybe it will be implemented in the future. (this is pure speculation of course)