# 1. Verify flash space Switch# show flash
A few important points:
– Cisco publishes them on the official software page (behind entitlement). Example expected hashes (hypothetical for SE11): c3560ipservicesk9mz1502se11bin download 2021
was a vital "safe harbor" release, addressing vulnerabilities found in earlier 12.2 and 15.0 iterations. Where to Safely Download c3560ipservicesk9mz1502se11bin download 2021