Please note that Windows 7 SP1 is still in Beta / development. And you need to wait for the final version of Windows 7 SP1 to be launched before any activation crack to be tested. Windows 7 Service Pack 1 Available For Download.
Microsoft has been busy getting rid of all the Windows activation cracks that started to pour out even before the final release of Microsoft Windows 7. The activation cracks used to bypass the technology used by Microsoft that interpreted the activation.
With Service Pack 1, it became almost impossible for the hackers to crack the new activation technology used by Microsoft. But a new technique has emerged that uses SLIC and SLP to crack Windows 7 activation even before Windows 7 boot process which makes Windows look like genuine.