Newer phone loads don't accept the **3 for debug mode unless the phone is unlocked with the **# key sequence. The sequences should be entered while the phone is idle at the main call display. You can't enter the codes back to back because **#** is the reset sequence.
Do the following.
Make a Call
Press (i) button twice (This should be similar to a double click on a pc) a longer delay between presses provides information on the (i) button itself.
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.