03-25-2022 02:19 AM
When I upgrade my IP phone 7841 series firmware with this file (78xx.14-0-1-0306-175.k4.cop.sha512) then error comes with invalid file format & previous firmware version with (.cop.sgn) this format is successfully installed. Our CUCM version is (System version: 11.5.1.14900-11). Please tell me anyone what may be the problem is & How can I resolve this issue.
Solved! Go to Solution.
03-25-2022 03:37 AM
03-25-2022 03:37 AM
You need to install this file.
03-28-2022 08:51 AM
03-28-2022 10:46 AM
Glad to hear that. Please take the time to mark the question as solved and give the answer helpful vote.
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