One more info: Just wanted to know whether CUCM 126.96.36.19900-5 is working fine on 7825-I5 or are you doing fresh installation on 7825-I5 server by using bootable of 188.8.131.5200-5,restoring backup and then, upgrading further to 184.108.40.20600-8.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.