I can tell you what worked for me:
1. download wm6.1 to PC from verizon website
2. open instructions in word - follow (sync phone, open, run)
3. I let customizations run (i've seen instructions on this site to stop them).
4. Follow GPS instructions from
http://wiki.xda-developers.com/index...VerizonAGPSFix
Phone stable all works great=D>. (I only have tried it with google maps) I still need to get my local weather to work, but this is a work phone so i am conservative about what I do to it.
Good Luck