Downgrade Question

Discussion in 'Windows 7' started by ciucca, Oct 26, 2009.

  1. ciucca

    ciucca MDL Novice

    Aug 29, 2009
    I have a version of 7 Ultimate I would like to make a legitimate "professional" version, since I have a valid Professional Key.

    Do they experts here think it would work to do the following:

    1) in the registry go to local_machine -> software -> microsoft -> windows nt -> currentversion. Replace "Ultimate" in EditionID and ProductName with "Home Premium"

    2) run WAU and use the Professional key.

    Will this work ok, or cause problems.