Many people with existing installations of Windows 7 beta don’t want to erase and do a new installation of Windows 7 RC. It would be nice option to upgrade to Windows RC, but Microsoft limits upgrades over any build earlier than 7077 to prevent unnecessary troubleshooting any of beta-over-beta issues.
Workaround to upgrade from Original Windows Beta 7000 build to Windows RC
- Copying the entire contents of the Windows 7 DVD to a local folder.
- In the Copied dump, Open the Sources subfolder and then open the file Cversion.ini in a text editor like Notepad.
- Change the MinClient value (highlighted in yellow) to 7000 and save the file in the same location with the same name.
- You can now run Setup from copied location without being bothered by the version check.