Help Needed

Just had my GN replaced by Vodafone as my previous one broke. The new one they have given me seems to be a factory restored one. It is running 4.1.1 and i can't get OTA 4.2. Can anyone help please.
phone status is as follows.

Just managed to find build details.

MAGURO

YAKJUXW

Baseband Ver
I9250XXLF1

Kernal Ver

3.0.31-g6fb96c9
android-build@vpbs1 )#1 SMP PREEMPT

Build number
JRO03C.I9250XWLH2