If your patched version has a different checksum, it is an exact Microsoft original.
Based on the specific version you provided (), one of the most "interesting" features—specifically because it was a major selling point for the "R2" release and highly useful for Standard Edition users—is Data-Tier Applications (DAC) . If your patched version has a different checksum,
Released in September 2014 (Build 10.50.6000), which is the final service pack for this version. Security Updates: If your patched version has a different checksum,