Nokia India — Lumia 520 No Updates Coming

Address:

Bangalore, Karnataka

Me and my sister brought Nokia Lumia 520 from the same shop from Saudi Arabia, the same day. We are both staying in the same city now in India. She is getting all the updates, latest black and cyan also. I have got an update about 1 year back, that also didn't got full features like fm radio, etc. After that till now i didn't got any update Amber or Black or Cyan. I am checking the phone updates under settings option using Wi-Fi, every time its showing your phone is up-to-date. What is the problem with my phone only??