Not able to login CMS server after change Request port no in CMS server

Hi,

By following SAP NOTE: 1628154, configuring promotional management to connect Destination system (Dev server) from production system. I have tried to assign static port no to the request port in the Central Management Server. After restart the SIA not able to login back to the CMC and getting below error message.

Account information not recognized: Could not reach CMS 'CFDWBIR02:6400'. Specify the correct host and port and check for network issues. (FWM 20030)

I would have to try over 6410 range port but gave 6402.

Now do we have any way to change the port no in the Central Management Server with out logging CMC?

Thanks

Venky