I have CUCM 6.1.1
I install this file cmterm-7941_7961-sccp.8-4-2.cop.sgn to have a newer firmware and my phones are working fine everything is good.
For a particular phone I would like to test something with the old firwmare. The firmware is this version : SCCP41.8-4-1S.loads.
If I go in CUCM in the phone I put SCCP41.8-4-1S.loads or SCCP41.8-4-1S under the Phone Load Name + reset or unplugged the phone and still have the same firmware.
How can I do this ?