not getting amber update

[zeeshan haider1]

I am not getting amber update on my lumia 920. I purchased it from Pakistan and also live in Pakistan. I manually checked for update but it shows your phone is up do date last checked two seconds ago. My phone has enough 18 Gb free storage. Also amber update is available for pakistan then why m not getting it? Please help me. I checked in 'about' there is no amber os. Initially I updated to GDR2 Update that gave me radio in music & videos manu.
but in about manu no amber written..what does it mean? And how can i get Gdr3 amber update?

please advise.

many many thanks in advance