[cisco-voip] CUCM: Switchback from 6.1.1-2000-3 to 6.0.1-2000-4 not possible

[Robert Schuknecht]

Hi List,

recently i have upgraded my Callmanager from 6.0.1-2000-4 to 6.1.1-2000-3 and it worked fine. Then i tested to switch back to 6.0.1-2000-4. And now it did not work anymore. The Callmanager Service is down and can not be started. Then i switched to the new version again and the Callmanager working fine again. Is this a bug or did it work like designed. Anyone seen this before ?

Any hint is appreciated.

/Robert