Finally good news for lumia 520 users in India. Wp 8.1 is released for ur phone today. U will get first 5 mb update which need to get major update of 8.1. Now my phone is downloading update. I was using dp but yesterday i recovered it with nokia recovery tool to lumia amber. Today i updated again to lumia black. And now my good luck that i m getting 8.1 update. Sure the official update!!!!