WP 8.1 for 520

[Kiko Randa]

Did somebody know when will be available update for this model?

 

[xandros9]

This question has been asked innumerable times. Do know that.

We don't know for sure, the window is this summer. However carriers can add additional time, and will vary widely if your 520 is carrier branded.

The Developer Preview is already available if you want.