Prepare a reachable server (e.g., tftpd64 on Windows, or atftpd on Linux) with the c3560ipservicesk9mz1502se11bin file.
Note: SE11 fixes several vulnerabilities and bugs from earlier SE trains (e.g., CDP issues, memory leaks). c3560ipservicesk9mz1502se11bin upd
Updating Cisco Catalyst 3560 to c3560-ipservicesk9-mz.150-2.SE11.bin (IOS 15.0(2)SE11) — Procedure & Notes Prepare a reachable server (e