_verified_: C3750e-universalk9-mz.150-2.se11.bin

If you are moving from a very old 12.2(xx) release, check the Release Notes for Catalyst 3750-E to ensure there are no intermediate bootloader requirements.

: Indicates this is a "universal" image containing all feature sets with "k9" cryptographic support for secure protocols like SSH and SNMPv3. c3750e-universalk9-mz.150-2.se11.bin

The 15.0(2)SE software train introduced several advancements in security and connectivity for the 3750 series: If you are moving from a very old 12