<p>You probably have to do an incremental upgrade to 3.3.1 or something before you can load 4.x</p>
<div class="gmail_quote">On Dec 6, 2012 3:10 PM, "Tim Nelson" <<a href="mailto:tnelson@rockbochs.com">tnelson@rockbochs.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I have a site with Polycom handsets on all the desks, mostly IP650s, some IP550s, and some IP450s as well.<br>
<br>
I need to update the firmware on the IP450s. However, the firmware simply won't load.<br>
<br>
The latest firmware (4.0.3 Rev F) supports all phones at this site, and was downloaded from here: <a href="http://downloads.polycom.com/voice/voip/sip_sw_releases_matrix.html" target="_blank">http://downloads.polycom.com/voice/voip/sip_sw_releases_matrix.html</a><br>
<br>
The phone pulls the firmware from the PBX via TFTP (as expected), but always results in 'Error: Image is not compatible with the phone'.<br>
<br>
As a troubleshooting step, *ALL* firmware has been removed from the TFTP root, and *ONLY* the new firmware placed there. So, is the Polycom firmware matrix wrong about this phone/firmware compatibility, or am I missing something? The bootrom has also been upgraded to the latest without any problems.<br>
<br>
Thoughts? My head is getting sore from banging it on my desk... :/<br>
<br>
Tim Nelson<br>
Systems/Network Support<br>
Rockbochs Inc.<br>
<a href="tel:%28218%29727-4332%20x105" value="+12187274332">(218)727-4332 x105</a><br>
<br>
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</blockquote></div>