Once you have the legitimate Silver_v4.2.1_Win10_x64.msi file, follow these steps:
The Sliver tool is widely used for iCloud bypass and iOS resource management. While the most famous versions are for macOS, Windows-specific builds and older releases are often sought after for compatibility with older Windows 10 environments. silver v4.2.1 windows 10 download
You can find the official archive of older Sliver versions on the developer's legacy page: Official Archive: Apple Tech 752 Older Versions Alternate Link: Silver v4