Use a free tool such as Tftpd64/Tftpd32 or Pumpkin TFTP on your PC.
The Cisco IP Phone 7965G is a cornerstone of enterprise communication, offering a high-quality color display and advanced features. However, the hardware’s reliability is inextricably linked to its firmware—the specialized software that controls its core operations. Understanding how to manage Cisco IP Phone 7965 firmware downloads
Boot or factory reset the Cisco 7965 phone. It will fetch the configuration file and pull the new firmware automatically. Important Upgrade Considerations
Note: Access to Cisco firmware requires a valid Cisco account with service contracts. 4. Preparing for the Firmware Upgrade