. It addresses major security vulnerabilities and extends the lifecycle of older legacy industrial processors.
Firmware version 20.12 represents a major update to the RSLogix 5000 software, with a range of new features, improvements, and enhancements that are designed to improve productivity, simplify system design, and enhance overall system performance. Some of the key highlights of this update include:
Open ControlFLASH and select the target catalog number (e.g., 1756-L73).
Firmware 20.12 supports older generations of controllers that cannot run newer firmware (v21+). Specifically, it is the last version to support: rslogix 5000 firmware 20.12
This process caused headaches for many engineers trying to update controllers in the field. Missing this step often resulted in flashing errors, leaving engineers scratching their heads wondering why the "latest" firmware wouldn't take.
This version was specifically released to address a vulnerability that could allow attackers to cause a Denial of Service (DoS) or alter the controller's state.
Export a copy as an .L5K (text format) file for emergency recovery. 3. Choose the Right Communication Path Some of the key highlights of this update
To understand v20.12, you first have to understand the hardware landscape of the early-to-mid 2010s. Rockwell released the and ControlLogix 5570 controllers. These controllers were powerful, but many of them were "locked" to specific firmware versions.
: Use a USB connection if supported by the processor (e.g., L7x series).
Controllers with firmware 20.12 are typically programmed using RSLogix 5000 v20.01 or v20.03 . Note that while firmware and software major versions must match (v20), the minor versions rarely do. Missing this step often resulted in flashing errors,
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This revision includes tightened security to protect against unauthorized access and vulnerabilities as part of the ongoing Rockwell Automation Security Policy. It is highly recommended to upgrade to 20.12 for installations demanding higher security compliance. 2. Improved Hardware Compatibility
