![]() ![]() Now I can apply the firmware to a single test phone and not *all* the phones of that model type before rolling the firmware out. I typically copy and paste the new value to Notepad and place the old value back into the appropriate fields. Because, however, you have not stopped and started the TFTP service, you have a fabulous opportunity to paste back in your old version value if you would like, before the TFTP service is reset and the system starts upgrading your phones. If you jump over to CUCM Administration, you will see that the device default fields for your phone models have been updated to the version you have just installed. In this case, the system has actually done you a favor. Now at this point, newbies to voice might think that their work here is done, firmware file installation reported complete, so what could be left? Well, it’s voice, it’s *never* that easy. Once installed, repeat the process on the subscribers as well.*** Walk through the prompts to upgrade from sFTP, select your file, check the MD5 hash, and start the install. Next jump on over to the publisher and navigate to OS Administration -> Software Updates -> Install and Upgrade. In this case, I copied SCCP45.9-2-1S which was the default device firmware for the 79 phones. Log into CUCM, navigate to Device Settings -> Device Defaults -> Ĭopy and paste the current value of the default firmware into Notepad or Evernote or whatever program you use that helps keep you from losing stuff. ![]() Now before you go off installing firmware files, there is one crucial step I would always recommend: I typically use FreeFTPd, but use whatever sFTP client you are comfortable with. Save the file to your sFTP directory and launch your sFTP client. There are just a few simple steps and gotchas to watch out for to get this firmware up and running on these phones.įirst, hop on over to and download the firmware files for CUCM. Say for example you’ve received a batch of those 7945 or 7965 phones that only support 9.3(1)SR1* and you aren’t running that version of firmware on your CUCM yet. Occasionally in voice world you are required to update firmware for just certain phone types and not others. ![]()
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