The following notes were taken from my personal field notes.
*Upgrade time from the time you insert the DVD containing the correct ios files: 1hr 15minutes to 1hr 20minutes (per server)
*ISO file url link:
*The following notes were created using a vmware machine as well a cluster of 2 unified communications servers with version 6.0(1).
*This upgrade notes correspond to an upgrade conducted while UCM was in operation/production
*Downtime : Between 5 to 10minutes depending on your UCM hardware configuration.
*This upgrade notes correspond to an upgrade conducted on a cluster containing multiple locales.
-Adquire a blank DVD
-Create a folder in your computer.
For example (Upgrade-ucm), this is the folder that you will use to save the 2 files that you are going to download from cisco.com
-Visit the above Cisco url in order to download the proper files and save them into the appropriate folder in your pc.
-Once you have succesfully downloaded the 2 files needed to upgrade UCM proceed to the next step.
-Go to your computer and open CMD
In CMD navigate to the folder containing the 2 upgrade files
-Once in the folder enter the following command
Once the windows task has been completed, your cmd screen will look something like this
C:\Documents and Settings\Cesar Fiestas\My Documents\Software\Upgrade-ucm>COPY /
1 file(s) copied.
C:\Documents and Settings\Cesar Fiestas\My Documents\Software\Upgrade-ucm>
Now please proceed to the next step
-Procced to write the image to the DVD
The image file name should be UCSInstall_UCOS_126.96.36.1990-13.sgn and it should be located in the same folder that contains the 2 files that you downloaded from cisco.com
I used ImgBurn and it work great.