The "7.2.2" in the filename refers to the software version, which is a point release of the IOS XE software.

If you need a lab environment, consider using Cisco DevNet or CML instead of searching for direct downloads.

: Avoid third-party torrent sites or file-sharing forums offering “cracked” versions. These often contain malware or altered binaries that can result in security breaches or non-compliance during audits.