Correction to my last post, I mis-typed. We are getting 3.20.11 now. I used the word "not" in my post above..sorry. The update is now working for both our 4620L units and our new 4620LE units.
Here's the release notes on 3.20.11 from the Verizon website: »support.verizonwireless.com/pdf/···620l.pdf
Looks like some worthwhile updates.Thanks for posting.