Backup Restore CUCM

[somari]

Accidentally, our Cisco Unified Communications Manager (UCM) version 10.5.2.10000-5 experienced a critical failure that resulted in a complete loss of configurations and the deletion of the VM. We've since installed version 10.5.1.10000-7, and now we are in a predicament.

We are seeking guidance and expertise to determine if there's any way to recover and restore our previous configurations and data. Our primary objectives are as follows:

1. Data Recovery: We are in dire need of a method to recover our previous configurations and data that were associated with the now-deleted VM. If anyone has experience in data recovery for Cisco UCM, we would be immensely grateful for your insights and guidance.

2. Version Compatibility: We are exploring the possibility of upgrading our current version (10.5.1.10000-7) to the previous version (10.5.2.10000-5) to ensure compatibility with our original configurations. If you have experience or advice on how to accomplish this, we would greatly appreciate your assistance.

Note: we have a valid backup tar file from the previous setup but cant see the list of TAR files since the current version (10.5.1.10000-7) is not as the previous version (10.5.2.10000-5).

[b.winter · Accepted solution]

You need to setup a new CUCM with the same basic setup and version. You cannot restore the config from the backup if, the versions don't match.
Why did you setup a CUCM with a newer version in the first place, if the "deleted" CUCM was an older version?

[Nithin Eluvathingal]

Apparently there is no data recovery backup. 

If you have a backup of 10.5.2.10000-5, install fresh cluster on 10.5.2.10000-5 with same network settings and restore the backup.

CUCM backups can only be restored on same version.

if subscriber is UP and only publisher got deleted, you can build the publisher from sub