We are upgrading our callmanager 3 nodes cluster from version 188.8.131.520-3 to version
We have successfully upgraded the publisher and one of the subscribers.
The issue is when trying to upgrade the last subscriber using the OS Administration
interface>Software Upgrades>Install/Upgrade and after specifying the local source we
have an error message : An unknown error occured while accessing the upgrade file.
Please note the following :
- We are using the same DVD used to upgrade the first 2 nodes
- We have tried using Remote Location (SFTP) and we got the same error
- We have rebooted the server and tried again using DVD then SFTP but we got the same
Thanks in advance.