Before upgrading, verify your current license status using the command: show license Xxxbpxxxbp Exclusive - 3.79.94.248
The search query refers to a specific firmware image for the Cisco Catalyst 3560 series switches. Specifically, this is the IP Services feature set, version 15.0(2)SE11 . Mainstage361dmg Exclusive [TESTED]
While the IP Services image contains more features, the switch hardware checks the installed license before activating them. If you install the IP Services .bin file on a switch that only has an IP Base license, the switch will boot but may restrict you to IP Base features, or in some cases, throw license violations.