Since upgrading to CUCM 18.104.22.16800-11 any new phone plugged into the system gets an "auth fail" from the TFTP server when attempting to upgrade the firmware to the version that comes with 7.1(3). Phones that were registered prior to the upgrade work just fine. I am seeing the same behanviour on our non-production environment which is also at 7.1.3-10000-11.
Phone Firmware for 7.1(3) on 7961G set is SCCP41.8-5-2SR1S
Has anyone sle seen this behaviour before...is anyone else running 7.1(3) yet?
My Issue was taht the Phone Firmware first must be 8.5.2 and after taht the phone can go to 8.5.3. This is written in the Relase Notes