Hello, I got a CISCO IP PHONE 6921, I need to upgrade the firmware to work with SIP. I haven´t upgrade a phone never, so I need your help. I have read some info about some xml, tlv files, but I don´t know where to start.
I download from cisco this file: cmterm-69xx-sip.9-2-2-7.zip which content: BOOT69xx.0-0-0-14.zz.sgn / DSP69xx.0-0-0-11.zz.sgn / SIP69xx.9-2-2-7.loads / SIP69xx.9-2-2-7.zz.sgn
What should I do?? I already have WinAget TFTP Server Manager with those files, but I dont get it to upgrade :S
Thanks for your help!