text: <s>[INST] PowerFlex 525 Firmware Summary: Upgrade? Downgrade?I have been using Firmware revision 1.005 for all new installations of the PowerFlex 525 drive with no issues. I have had issues with rev. 2.02. I am looking at the new firmware revision 4.001 and I cannot find information on it. Does anyone know if a firmware up/downgrade on new equipment will provide any benefits from what I am using now? Or does anyone have any issues with the latest firmware revision? [/INST] Welcome to the Forum ! I suggest to upgrade, my experience is good with this rev. Here the Release Notes: http://literature.rockwellautomation.com/idc/groups/literature/documents/rn/520-rn001_-en-e.pdf - fuzzy logic In order to enhance the reputation of the Forum's contributors, please rate the replies you got and remember to close the thread clicking Choose as Best Answer button over the solving answer. Thanks ! \\n </s>