Windows 10: Lumia 925 win8.1 > win10 upgrade problem

It started downloading in the update section in the settings, but it has been at 0% for 2 days, at the top it says the phone is up to date and at the bottom it says “downloading update 0%”. For Win 8.1 --> Win10

:)

 

Upgrade from win8 to win10

I have already upgrade from win8 to win10 before 29 July 2016. After that my HDD is broken, I have to install windows on my new SSD. I use same key which I use to upgrade from win8 to win10 to install win8 (Niow it's 8.1). Today, I want to upgrade win10
and I have some question.

1. Is there a upgrade directly from win8.1 to win10 ??

2. Can I use my win8 key to install win10 using windows10 installation media (with clean installation).

Thanks

 

Important _ Bricked Lumia 925

Sure, but check this image below, step by step:

• "My phone can not be detected"
• Clicked on "Lumia"
• Select the Phone: Lumia 925 is not showed in this list.
• Then, Click on "My Phone is not on the list"
• The message "This phone can not be recovered."

That's the problem.

 

Is Win8 upgraded to WIn10 free ?

Same as the question.



1) Do I need a new Win10 product key ?

2) Do I need to enter the old Win8 product key ? I don't know my Win8 key as it was bought many years ago.



Thank you for answering.