Based on the phrase "solid review" and the context of the Cisco IP Phone 7965, it is highly likely you are referring to the (specifically the popular "SIP" load) versus the proprietary SCCP (Skinny) firmware.
involves selecting the correct protocol (SCCP or SIP) and using either a Cisco Unified Communications Manager (CUCM) or a standalone TFTP server for the update. Cisco Ip Phone 7965 Firmware Download
Point the tag to the firmware version string (e.g., SIP75.9-4-2SR3S ). Based on the phrase "solid review" and the
B. Manual TFTP deployment (for environments without CUCM) make sure you have the following:
Log into your CUCM Administration page and navigate to OS Administration > Software Upgrades > Install/Upgrade .
Before you start the firmware upgrade process, make sure you have the following: