Cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin

This is where the software "DNA" is split between two naming systems: IOS XE 3.11.5E : This represents the

: Indicates this image is designed for the Catalyst 4500E series specifically using the Supervisor Engine 8-E. cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin

Do attempt to flash a non-SPA image on a supervisor that expects SPA format, or vice versa. This is where the software "DNA" is split

The file name includes universalk9 . This indicates it includes (3DES/AES). cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin