Firmware versions can often be found by looking at parameter 1.01 or the label on the EPROM chip inside the drive.
This guide provides a roadmap for locating and downloading the resources you need for your ACS 450 drive. 1. ACS 450 User Manuals and Documentation
download typically refers to the Siemens PC Software for Burner Management Systems (LMV5) or documentation for the ABB Advant Controller 450 1. Siemens ACS450 PC Tool (Burner Management)