To restore:

If the virtual machine is still running but malfunctioning, power it down and take a VMware snapshot. While snapshots are not supported for long-term production use in Cisco UC environments, they provide a temporary safety net during destructive recovery operations. Step-by-Step Recovery Procedure

Always test custom‑created bootable media in a non‑production environment first, maintain current backups, and ensure you have valid licensing entitlements before deploying to production systems. For production upgrades or fresh installations, always prefer officially distributed media whenever possible.

: This means the file is digitally signed by Cisco to ensure integrity and authenticity. Procurement and Installation