VS98523c updated successfully but 4G Data doesn't work
after the 3rd or 4th reboot the 4G data now functions again.  sounds like other phones and other versions were having this issue as well. 

Cellular data not working since 5.1 Lollipop flash

How do I get my mobile data to work again, after the new Android 5.1 update?

Nexus 5 upgraded to 5.1 and mobile data wont work anymore

Moto G 1st Gen - Mobile Data not working after upgrade to 5.0.2