I've looked all over for the sha-1 or sha-256 checksum for the windows 8.1 iso that you get with the Microsoft’s “Upgrade Windows with only a product key” page but none of the check sums provided on MSDN website matches the one that I were able to get with the download tool. And I've already tried twice and still I get the incorrect hash when compared to the ones provided.
I would either like the correct checksum page from microsoft or other location to obtain the iso of windows 8.1