You need to go to a newer 8.x firmware first before going to 9.x, from the release notes.<div><br></div><div>You'll need to go to <a href="http://cisco.com">cisco.com</a> and download one of the intermediate versions then get your phones upgraded to that release, then change the default back to the 9.x or just download current 9.x and install it and go to that.</div>
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"For all SCCP firmware upgrades from firmware release versions earlier than 8.3(3) to Version 9.3(1) or later, you must first upgrade your firmware to an intermediate version (8.3(3) to 8.5(2)) and then upgrade to 9.3(1)."</p>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Dec 13, 2012 at 2:10 PM, Shaihan Jaffrey <span dir="ltr"><<a href="mailto:schaehan@gmail.com" target="_blank">schaehan@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Recently i've installed CUCM 8.6. <div><br></div><div>I've registered ip phone 7941 with the CUCM. </div><div><br>
</div><div>On reset the phone tries to upgrade the firmware but give the error LOAD AUTHENTICATION FAILED.</div>
<div><br></div><div>The current firmware on the phone is SCCP41.8-3-1S and the firmware on the CUCM 8.6 is SCCP41.9-2-3S.</div><div><br></div><div><br></div><div>Please suggest on how to resolve the issue.</div><div><br>
</div>
<div>Regards</div>
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