: Note that changing versions can sometimes cause issues with Add-On Instructions (AOIs) that were built on different versions. Why Version 20.12 specifically?
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The primary driver for upgrading to or maintaining version 20.12 is cybersecurity. Older versions of firmware (such as 20.11 and below) suffered from a well-documented vulnerability involving the handling of controller memory and web server access. Key Security Enhancements : Note that changing versions can sometimes cause
Later revisions that aimed to bridge these gaps. Older versions of firmware (such as 20
Note: Rockwell changed how software minor versions interact. RSLogix 5000 v20.04/v20.05 can open and support any controller firmware from 20.11 to 20.19. Operating System Compatibility
RSLogix 5000 version 20 introduced a host of new capabilities, and revision 20.12 inherits all of them while adding stability improvements.
Introduced a major security update that made files incompatible with earlier versions of v20.