I just got a new drive and i guess i didn't look close enough at the ISO untli i was all the way upgraded to win10 pro n
If you are after free 10240 activation, it is neutral for both x86 and x64. In other words, the activation is compatible for x86 and x64.
If your Windows 10 already activated after upgrade, NO.... Just download 64bit win10 pro n ISO, reformat, skip entering-product-key-screen then connect to the internet and it will activated automatically after installation...
Is this a real question? You cannot convert an existing install from 32 bit to 64 bit. Windows has an entirely different file and instruction set for 64 bit. You burn it to the ground and start over.