I had done an upgrade done to my call manger cluster from 7.0.3 to 7.1.3. I have all 7945 phones in my environment. All the registered phones have upgraded to the firware in the device defaults. But when i add a new phone it give me AUTH failed during the firware upgrade and then registers ? Anyone noticed this issue or have an idea on how to solve it ?
What version of firmware is currently installed and what version are you upgrading to?
I have seen this issue when upgrading from an older firmware to 8.5.3. If this is what you are doing, then kindly refer to the following link:
NOTE: For all SCCP firmware upgrades from firmware release versions earlier than 8.3(3) to version 8.5(3) or greater, you must first upgrade your firmware to version 8.5(2). Once you have upgraded to version 8.5(2), you can upgrade your IP Phone to version 8.5(3) or later.
If this helps, please rate.