Whe I try to upgrade the Subscriber to version 188.8.131.5200 the Call Manager is not able to find the parch from the DVD disc, in the Install Upgrade Retrieval Mechanism I select Local, and I insert the DVD with the patch. I recorded the patch with the following extension:
And the CallManager can not find the file. The patch is recorded in the root of the DVD. The MD5 of the files are correct.
Before you can upgrade from a local disk, you must download the appropriate patch file from Cisco.com and copy the file to a CD or DVD. Because of the size of the patch files, you will need to copy it to a DVD in most cases.