Cucm 12.5 — Bootable Iso Download !!link!!

You have the bootable media; now you need to boot from it.

If you already have an older version running, you can use the non-bootable ISO downloaded from the Cisco Support site to perform a "standard upgrade" via the CLI or GUI. cucm 12.5 bootable iso download

To download and use a bootable ISO for Cisco Unified Communications Manager (CUCM) 12.5 You have the bootable media; now you need to boot from it