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You simply need to put a load on the phones that is compatible with both 3.3 and 6.1. This will vary depending on the phone model. It looks like all of the latest loads will work with every version of CUCM past 3.3. This includes 8.4(2) for 3rd gen phones and 8.0(10) for the 40/60 phones.<div><br></div><div><br><div> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">-Ryan</font></p> </div><br><div><div>On Dec 3, 2008, at 10:03 AM, Jorge L. Rodriguez Aguila wrote:</div><br class="Apple-interchange-newline"> <div class="Section1"><p class="MsoNormal"><span lang="EN-US">We are in the process of upgrading a customer that has an existing ccm 3.3.4 deployment. Due to the nature of the old hardware and other issues the call has been made to bypass the DMA phase, Cisco created the licenses for the Devices as if in a new deployment, this part is ok. The issue comes in the fact that the phones currently in service are running old firmware from the 3.3.4 code of ccm. I am 98% sure that there is a need to move the phones to an intermediate load as they will probably fail to jump from such an old fw to the recent versions of fw code within 6.1 If anyone has done and upgrade such as this and can shed some info it will be greatly appreciated. <o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p><p class="MsoNormal">Jorge Rodríguez Aguila<o:p></o:p></p><p class="MsoNormal">CCNA,CCVP,CRMCS,CIPCES<o:p></o:p></p><p class="MsoNormal"><span lang="EN-US">Senior Voice/Data Network Consultant<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US">Netxar Technologies<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US"><a href="mailto:jorge.rodriguez@netxar.com">jorge.rodriguez@netxar.com</a><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US">Office 787-765-0058<o:p></o:p></span></p><p class="MsoNormal">PCS 787-688-8530<o:p></o:p></p><p class="MsoNormal"><span><image001.png></span><o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p> </div> <span><image001.png></span><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">cisco-voip mailing list</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a></div> </div><br></div></body></html>