Have you tried uploading firmware version 8-5-2S on TFTP server and specifying the same load name under 'Phone Load name' on the Phone configuration page of 7965. Restart the TFTP service and reset the phone and see if it works or throws up any errors.
Go as per Manish suggestion , since as per the link mentioned by you
7965 G Phones manufactured with hardware versions 13.0 /higher must run Firmware Release 9.3(1)SR1 or later. The phone firmware does not allow the phone to be downgraded to releases earlier than Release 9.3(1)SR1.
In your case,it is V11 for 7965G
for 7942 , it is 15.0 and higher.so, u can also degrade the same because you have got V14
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
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 ...