Rev 1.0 is an older release. Modern 64-bit versions of Windows 10 and Windows 11 require . If you download an unsigned or poorly patched version of 100 251 Rev 1.0, Windows will block the installation, requiring you to disable Secure Boot or test-signing mode—which weakens your system security.
Official software and updates should always be sourced from authorized platforms to ensure security and vehicle compatibility. Delphi 100 251 Rev 1.0 Software Download
Here’s why: