With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ceDiagEntityImageAdminStatus
Cisco Entity Diagnostics Entity Image Admin Status
1.3.6.1.4.1.9.9.350.1.3.1.1.2
This object specifies the desired image the physical entity should be running: 'operational' - the physical entity should be running the operational image. 'fieldDiagnostic' - the physical entity should be running the field diagnostic image.
Back to CISCO-ENTITY-DIAG-MIB MIB page.
IPHost Network monitor allows you to monitor ceDiagEntityImageAdminStatus on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.