The problem documents mention upgrading from an EoL IOS version but do not explicitly state the upgraded software version. The Cisco EoL notice linked refers to the end of support for IOS-XE releases 16.3.4–16.6.1, implying a newer version was needed. However, the exact post-upgrade version (e.g., 16.12.x or 17.x) is not specified in the provided text.
No specific software version from the list is mentioned in the documents to confirm the resolved version.