If you want, I can:

This process is complex. Most engineers who need a "patched" ISO for hardware compatibility simply use or Proxmox VE instead of bare metal, because the virtual hardware is standardized and the official ISO works perfectly as a VM guest.

Cisco Modeling Labs (CML) requires two primary files for installation: the (the software platform) and the Reference Platform (refplat) ISO , which contains the virtual device images like IOSv and ASA. "Patched" or updated versions of these files are occasionally released by Cisco to fix bugs, such as missing crypto images or incorrect node definitions. Downloading the Refplat ISO