Dogar posted a topic in Allen BradleyDear experts, In order to eliminate a fault in my system I want to change the firmware of following modules in 1756 Controllogix Standard redundancy system: L61: from 7.1 to 16.057 CNBR D-Type: from 7.1 to 7.016 CNBR E-Type: from 11.1 to 11.005 ENBT/A: from 3.1 to 6.006 1757-SRM: 5.004 Although I have never worked with PLC before but I have read a lot of manuals and so i do have a little information on how to do things but as the system is critical and I can't afford any mistake I need advice from you guys regarding the proper and complete procedure to do the above mentioned activity. Kindly tell me if I will be required to take backup for controlnet and Ethernet scheduled files by rsnetworks or not? and what precautions should i take? and what possibly can do wrong and how to handle the worst case senario? I would be having maximum of 5 hours to do all of the above mentioned activity.