4/7/2024 0 Comments Cisco cucm upgradeLastly be sure that your firmware in CUCM is at least the same version your are manually updating or newer. I had to upgrade about four different models this way and had to make sure that I had right firmware in tftp server then reset right model phones. Also be sure that you are using right model firmware when you reset the phone you are looking to upgrade. I dont know what this may do during production hours with tftp being directed to a computer so I would recommend after hours just in case you have any phone resets.īe sure to remove where tftp is pointing to when you are done and set it back to CUCM. Was dark to the phone while it was going on but after 5-10 minutes it did work, the phones would not pull firmware from CUCM. I had to do this across my wan, via remoted in from home to office. I am going to try and remember as best as I can on how i did it.Ĭhange tftp helper on your router to a computers ip address that will be hosting a tftp server with the ip phone FW image (this is assuming DHCP for phones is coming from router).
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