cant upgrade 6941 ip Phones from 8.5.4 to 9.0.2 or 9.0.3.a SCCP
we have an CUCM 7.1.5 with some 6941 SCCP Phones. some of them have SCCP firmware 8.5.1 or 8.5.3. I can succesfully upgrade to firmware 8.5.4.No I want upgrade them to 9.2 and at first step to 9.0.2 or 9.0.3.
But upgrade doesnt work. phone says
[14:19:....] SEPxxx Get Ip from DHCP Server...
[14:19.....] upgrade from 22.214.171.124
[14:19.....] upgrade fail (read fail)
after install the new firmware and/or change the device defaults I restarted the cisco tftp server, but it doesnt work. can anybody help?
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The short answer is that you don't.... That isn't entirely true while at
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...