7961s fail to upgrade to new firmware.
We have a 7961 that is registered to a remote call manager (VPN) and works without issue. We have an onsite call manager that we want to have the phone register with for time zones, etc. So we reset the phone (123456789*0#) to get the new firmware from the local call manager.
However, when it does so it gets about halfway through the upgrade process then says error, cannot find SCCP41.9-3-1-SR2.
It does this after successfully downloading the cnu, jar, and apps file.
The files were put on the CUCM ftp manually (through the ftp file manager page) and not using the software upgrade page.
Do I need to use the software upgrade page to resolve this issue?
My version of cucm is 7.1
Thanks in advance.