[andy1008]

I am from Mumbai & mobile operator is Vodafone. I am not getting 8.1 cyan updation from Black till date. What to do?

[Pete]

Are you currently running the WP8.1 Developer Preview?

[andy1008]

I was using it. Then reset my mobile to factory setting. Now it is showing 8.1 Black.

[Pete]

You're still running the developer preview, a factory reset will not remove it. You will need to run the Nokia software recovery tool in order to restore windows phone 8.0.

You won't get windows phone 8.1 through settings-> update until Microsoft fixes the issue with bitlocker. Your alternative is to downgrade to Windows phone 8.0 using the Nokia software recovery tool, but only do this when you're sure that the update is available to download for your region/carrier/phone.

[andy1008]

Downloaded Nokia recover tools & did what exactly you told. Updated my mobile with

[andy1008]

8.1 cyan. Thanks a lot.

[Pete]

Excellent!