Cisco 7942 displays circle with a dot when attempting to upgrade
Working on upgrading a 7942. I have tried factory resetting the phone and now all I end up with is the Cisco splash screen, and a circle with a dot in the lower left-hand corner of the phone. It doesn't do anything else...just sits. The image I am attempting to use is: SCCP42.8-3-4SR1S.
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.