Cisco MCU 3545 Software Upgrade from 5.5 to 5.7 Failure
When upgrading an 3545 MCU from 5.5 to 5.7 using the upgrade utility the upgrade failed and the MCU has become unavailable (luckily we were testing this in the lab). Upon connecting to console and rebooting we get the following error:
Main application started. Please wait...
Invalid application on Flash. Running Wakeup program.
And then it does nothing. Does not respond to HTTP or SNMP and is unusable. We can't perform the upgrade again as SNMP does not work.
Is there a way to restore the application to flash, via console or TFTP? I haven't had any luck finding documentation on this.
I can telnet to the MCU and login, but from there I don't see what else I can do. Does anyone on here have experience with this?
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.