There is an security issue and needs to change application user name on our UCCX cluster version 12.5 su3. Could you please tell me what will be the effect apart of the admin web login?

Could you please someone explain me what is the difference showing on CUCM device page with regards ip_phone LSC status =NONE and LSC status =Upgrade Success? Some of my ip phones has status Upgrade Success and some others status= NONE. Both i can co...