i too am using a VZN Pre2 with 2.2.4, converted to Sprint.
Originally Posted by jccjmml7
my first impression is it's not very clear how to operate the application. The initial screen is a map, with no clearly understandable icon indicating "start a trip" or "navigate to" or "input an address". So, i couldn't figure out how to input a new destination to navigate.
but i was able to trigger the app to initiate a trip, instead by typing the address into the "just type" bar. that brings up the standard webOS "launch and search" page, with wiki, google, and other choices of reference sites. clicking "more +" allowed me to select Navit. The app then booted and initiated the voice-guided trip. I did not actually complete the trip or drive anywhere yet, it was just a test while at home. but it does look like it will work sufficiently.
it took a bit of effort to get the Navit Maps supplemental app to download/install the map package i needed for southeast USA. At first, the app simply showed a blank page -- until I connected to a wifi connection, when choices for map downloads suddenly became available and then did install without issue.
hopefully after a Navit-aided trip or two i'll be able to report back that it functions as well as the Sprint branded app which is now dead.
i hope it works ok for you and anyone else. good luck.