With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoFlashFileStatus
cisco Flash File Status
1.3.6.1.4.1.9.9.10.1.1.4.2.1.1.4
Status of a file. A file could be explicitly deleted if the file system supports such a user command facility. Alternately, an existing good file would be automatically deleted if another good file with the same name were copied in. Note that deleted files continue to occupy prime Flash real estate. A file is marked as having an invalid checksum if any checksum mismatch was detected while writing or reading the file. Incomplete files (files truncated either because of lack of free space, or a network download failure) are also written with a bad checksum and marked as invalid.
Back to CISCO-FLASH-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoFlashFileStatus on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.