Rockwell Automation Publication 1769-UM021G-EN-P - October 2015
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Complete Software Tasks Required at CompactLogix 5370 Controller Installation
Chapter 4
4.
Select your controller and click Download.
You can also choose to click Update Firmware to complete this process. If
you do so, skip to
A dialog box appears to indicate that the project revision and controller
firmware revision are different.
5.
Click Update Firmware.
6.
Use the checkbox and pull-down menu to choose your controller and
firmware revision.