[cisco-voip] Load Authentication Failed

[Bernhard Albler]

Hi,

there is known issue (documented in the release notes for 8.5(2)SR1):
Basically phones with fw 8.3 and earlier will only upgrade to 8.5.2 and not do SR1 directly.

you need to first go to a newer fw (like 8.5.2) and only then can upgrade to 8.5.2sr1 and 8.5.3

regards
benrhard
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Bernhard Albler, CCIE #23747 (Voice), NTS AG
Tel.: +43 (1) 867 6776 -516, email: balbler at nts.at