It was specifically built for Windows 7 editions, including the 64-bit Ultimate version, which requires more robust bypasses than 32-bit versions. The Dangers of Using Chew-WGA
How to activate the Windows 7 operating system. - Sony Canada chew wga windows 7 ultimate 64 bit
Before applying the CHEW WGA crack, you need to disable WGA validation. To do this: It was specifically built for Windows 7 editions,
: It modifies the Software Protection Platform (SPP) and Multilingual User Interface (MUI) resources. including the 64-bit Ultimate version