To download a , you must typically have a valid Cisco Service Contract or a recent product purchase. Unlike upgrade patches, bootable ISOs are considered full installation media and are restricted to specific delivery channels. Where to Find the CUCM 12.5 Bootable ISO
Re-inject the boot file into the ISO and save it as a new file. This modified ISO can now be used to boot a Virtual Machine in ESXi. Installation Requirements for CUCM 12.5 cucm 12.5 bootable iso download
Use a tool like UltraISO to load the ISO and select "Generate Boot Info Table" under the bootable tab. To download a , you must typically have
Developers and students may obtain a Collaboration Partner Demo, Lab, and Training Bundle (NFR) through Cisco DevNet for lab testing purposes. Key Differences: Bootable vs. Non-Bootable ISOs Bootable ISO Non-Bootable (Patch/Upgrade) ISO Primary Use Fresh installations, rebuilds, and recovery. Standard upgrades of an existing cluster. Availability Restricted; via MCE/PUT or physical media. Available on Cisco Software Central. File Name Starts with Bootable_ or BOOT- . Usually starts with UCSInstall_ . How to Create a Bootable ISO (The Patch Conversion Method) This modified ISO can now be used to
This portal (which replaced the Product Upgrade Tool - PUT) allows users with active subscriptions to order eDelivery links for full install and upgrade media.
If you can only download the upgrade ISO (non-bootable) from Cisco's support site, you can technically convert it into a bootable image for lab use using tools like or Linux commands:
