Build 1436.28 is often sought after because newer official updates (like 1491.50) can break certain mods or require new crack fixes.
Cracks often contain malicious code that can compromise your system. GF180222-RDR2-B1436.28-EMP.part02.rar
Pirated versions often suffer from crashes (e.g., the "15-20 minute crash") that require specific community-made "Crackfixes" to resolve. Build 1436