How can I update my Lumia 820 to Windows 10?

Steps to upgrade your Lumia 820 to Windows 10 Technical Preview

First of all download Windows Insider from Store.
Now open the app.
Now you will get two options to select, A Fast Ring and a Slow Ring.
Next step is to confirm the terms and conditions.
I have selected the Insider Fast program.

Can a Windows phone be unlocked?

If you use remote unlock, your logon PIN will be protected by Windows instead of your device’s security system. Sign in to account.microsoft.com/devices. Enter a new PIN, and then select Lock. You’ll now be able to unlock your phone with a new PIN.

Does Windows Phone 8.1 still work?

Yes. Your Windows Phone 8.1 device should continue to work after July 11, 2017, but there will be no updates after July 11, 2017 (including security updates) and device backup functionality and other backend services will be phased out as described above.

How can I update my Windows Phone to Android?

Steps to install Android on Lumia

Backup your Windows Phone software.
Open Win32DiskImager.
Now connect your phone in Mass Storage mode.
In Win32DiskImager, you need to select a location where you would like to save the backup.
Select the letter assigned to MainOS of your phone, and press “Read”.

How to install Windows 10 on a Lumia 820?

7- Install “Nokia Emergency Drivers” . I used this. its better to restart your PC then.

Where can I find carrier info on my Lumia 920?

I think one of them can have information about the carrier and maybe it will tell you if it is associate with the carrier. In my unlocked Lumia 920 I have this info: You can see RM-821-lta-brazil_253 that maybe can have carrier info in your case.

Which is the unlocked version of Windows Phone?

Basically it points to a official Windows Phone Dev article titled Registry values for carrier-unlocked phones There you can see that, in my case, 000-BR is a unlocked version for Brazil. You just need to go to extra-settings and see which is your Mobile Operator and found in the list.

Is it possible to sell a Lumia 925 without a SIM card?

I want to sell a Lumia 925 and need to know if it is SIM Locked. Is it possible to find out if it is without using a SIM card from another provider (which I don’t have)?