done that didnt work been trying been try for 5 days know.
Dial ##778# and hit send
* A pop-up window named EPST will show up giving you 2 choices: View Mode and Edit Mode. Pick: Edit Mode.
* Enter the Password: 000000
* Go down to Modem Settings and pick “Rev A“
* You’ll want to choose enable and click OK, hit the menu button and then press “Commit Modifications.”
Your phone will then restart, once back on use LTE ONOff and select CDMA auto (PRL)
Then go into your setting and select software update then "Check new" and it should find the update.
I submitted this tip to droid-life.com and they used it on the website. I'm Aaron, which they mention at the bottom of the post
Keep in mind the update has caused alot of problems for Thunderbolt users so make sure updating is really what you want to do.
After updating follow the steps above but instead of changing the modem settings to "Rev A" change it back to "eHRPD"(make sure to press menu and "commit modifications" when you change it) Phone will restart again.
Then using the LTEOnOff app change it back to "CDMA+LTE/EvDo auto"