Update, I called 6 Phoenix stores and Customer Care twice, and finally drove halfway across Phoenix to get the firmware updated. The tech was worried about losing the phone, so must've had experience with the upgrade , but he got'r done. I tipped him $10 because he stayed later than closing and good service (or even just decent service in this case!) should be rewarded!
Sprint Store
2340 West Bell Road Suite 139
Phoenix, AZ 85023
(602) 789-7700