The keyword "nxos64cs1024mbin" refers to a specific naming pattern for Cisco NX-OS 64-bit software images used by the Cisco Nexus 9000 and 3000 series switches. Specifically, the "nxos64-cs" prefix identifies a 64-bit "Cloud Scale" image, and "1024m" typically designates a release within the NX-OS 10.2(4)M train. Where to Find the Official Download Link
software.cisco.com/download.Installing the nxos64cs1024mbin Image
software.cisco.com.If you inherited a switch at a small business, contact a local Cisco reseller. They can often assist with a one-time firmware download or advise if your hardware is still under a valid support entitlement (even if you didn't buy it). nxos64cs1024mbin download link