The string c1900-universalk9-mz.SPA.158-3.M7.bin refers to a specific Cisco IOS software image for the Cisco 1900 Series Integrated Services Routers (ISR)
and hover over the file name in the download section to view the specific checksums for this release Verification Command c1900universalk9mzspa1583m7bin download verified
: You generally need a valid Cisco Service Contract (such as SMARTnet) linked to your Cisco.com ID to access these downloads. Why Verification is Critical The string c1900-universalk9-mz
Verification of the downloaded file is critical to ensure its integrity and authenticity: c1900universalk9mzspa1583m7bin download verified