SAP Server: Connection refused after Profile Change

Hi Guys,

today I have changed some Parameters in the Default Profile of my SAP ABAP 7.52 trial server.

After the changes, i can't login to the SAP System anymore, Errror is "Connection refused".

What can i do to rollback profile changes on the server? Deleting the new Version of Default Profile did not resolve this Issue.

Apart from that I changed nothing in System Configuration.

PS: No Backup of Server exists, i know i know....