Hello zadorojnuiandriu, I have also encountered this issue. In my case, the "Query counter data failed. Error=9 ErrorMsg=null" was because the element "Host" was incorrect (did not exist) for the "perfmonCollectCounterData" name space. In other words...

Hello. Here are some resources that I find helpful: http://my.safaribooksonline.com/book/telephony/1587050757/understanding-the-troubleshooting-tools/ch03lev1sec3 http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/10x/serv_administratio...

I would do the following: Verify the load is installed on all CM nodes.Restart TFTP on all nodes.Verify there are no ITL/CTL signatures from an old call manager on the phone.Verify that the configuration file is correct 'tftp -i IP_of_CM get SEP00000...

Did you try installing "sip78xx.10-3-1-12" first? What version are upgrading from? 11x requires that you have 10-3-1-12 installed first. Reference: http://www.cisco.com/web/software/282074288/130143/cmterm-78xx.11-0-1-11-readme.html