Many times we require to upgrade the firmware of cisco IP Phone and we look for the procedure to do it in internet .I did the same and decided to write this blog to summarize by search with the practical experience i have.
There are two procedure to upgrade the firmware of the phone one from CUCM and other by creaing a separte tftp server and pointing the Phone to take firmware from a stanalone tftp server which will host all the required tftp files.I will discuss the second approach from CUCM here...
First download the firmware from www.cisco.com then follow the below procedure to upload the image in CUCM
- Using your web browser, login to the Cisco IPT Platform Administration web page
- Under the Software Upgrades menu, select Install/Upgrade.
- Fill in the appropriate values in the Software Location section for the file you downloaded above, and click Next.
- In the Available Software drop-down box, select the file you downloaded above, and click Next.
- Enusre that the downloaded file has the same MD5 hash value as listed in Table 2.
- Click Next.
- In the Warning box, verify you have selected the correct firmware, then click Install.
- Ensure that you received a Success message
Now go to the CUCM admin page and change thedefault load by navigation to Device setting > Default Device Load
Remember in the OS adminpage you can find one more field called TFTP file management ,this ooption is used to upload ring file and other device pack so don't get confused with this option and "install and upgrade" option which is used to upload cop file for patch upgrade
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