With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
docsDevSwFilename
DOCSIS Device Software Filename
1.3.6.1.2.1.69.1.3.2
The filename of the software image to be downloaded via TFTP, or the abs_path (as defined in RFC 2616) of the software image to be downloaded via HTTP. Unless set via SNMP, this is the filename or abs_path specified by the provisioning server during the boot process that corresponds to the software version that is desired for this device. If unknown, the value of this object is the zero-length string.
Back to DOCS-CABLE-DEVICE-MIB MIB page.
IPHost Network monitor allows you to monitor docsDevSwFilename on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.