7975 with UC 540 Software Pack - 8.0.0 Beta

[ttrentler]

After upgrading a UC520 to 8.0 using CCA2.2 my 7975 phones display an Auth Failed message and do not upgrade firmware.
I'm wondering if it is a problem with the signature on the firmware image or a UC520/CCA configuration issue.

[Steven DiStefano]

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/firmware/8_5_3/english/release/notes/7900_853.html

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.