I am trying to update the firmware from a Cisco 7975G with SCCP Firmware to SIP. I have the XML Config File, but am struggling to upgrade the factory default firmware to any SIP 9.X Firmware.
Anyone have a step by step guide that is PROVEN to work. I have followed several online and the Config files are wrong or something else is wrong in the instructions. I am looking for someone who knows Cisco 7975G & Broadsoft so I can get those phone to work on that platform.
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