was released as an "enhanced resilience" (security) version that is not compatible Version 21.00
Rockwell Automation Product Compatibility and Download Center (PCDC) Updating L33ER PLC Firmware without Version 21.11
This version was the first to only support "multi-core" Logix controllers, such as the ControlLogix 5570 CompactLogix 5370 How to Download To get the correct files, you must use the