Why doesn't update Windows 10 in my Lumia 925?

[Md Salim]

Pls, let me know what's problem with Lumia 925 to install windows phone 10?

 

[Harrie-S]

Please read the articles in WC. There you can read that only a few phone types get the first update and other phones have to wait. and the 925 is one of them which has to wait
.http://www.windowscentral.com/windows-10-preview-only-these-lumias-are-eligible-todays-release