regarding windows 8,1 update for lumia 525

[WPCentral Question]

When will Lumia 525 get official update in India

 

[xandros9]

Please look at the other threads. It doesn't matter for the most part if its the 520, 620, whatever because the answers are the same.
"This Summer."

There are countless threads asking the same question, there are threads dedicated to tracking the rollout.
Please look there.

Also, it is very likely someone will link you shortly.