I tried upgrading the IOS on a 4506 from cat4500-entservicesk9-mz.122-31.SGA.bin to c4gwy-a3bik9no3rsx3-mz.124-21.bin and received this message "%Warning: File not a valid executable for this system".
Does anyone know what's the latest IOS I can use? Hardware is cisco WS-C4506 (MPC8540). Cisco's software advisor seems to be down for maintenance since yesterday. Thanks.
I just look under the product page for the 4500 switches. Under "General Information" link are the release notes and these set of notes are the latest.
Here are the release notes for the latest IOS version on 4500 - 12.2(46)SG1