I live in Norway, and my carrier is Telenor.
I didnt check the firmware version before the upgrade :(, think it was the 7.5 refresh.
Battery life...hmm.. not sure. Maybe a bit better, but it varies from day to day, sometimes its at 10% in the evening, the next day it could be at 40%. Now its 8 hours since last charge, and its at 61% (14 hours left). So its having a good battery day to day. hehe.