05-18-2010 02:09 PM - edited 03-21-2019 02:35 AM
hi guys,
what is the most compatible firmware with uc560?
i did system upgrade to 8.0.2 through cca, but 7975 keeps saying auth fail during the upgrade...
any idea?
thank you
05-18-2010 03:14 PM
Most likely the phone has and older firmware load already installed. 79xx firmware cannot be directly upgraded from 8.3.3 or earlier to 8.5.3 or higher. http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/firmware/8_5_3/english/release/notes/7900_853.html#wp57602
There is a technical enablement lab (#20) at this link which may help you
https://supportforums.cisco.com/docs/DOC-9836
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