if you have a registered 1.6 licence, Zorro would have sent you the following email.
Dear PhoneControl.NET user,
version 1.7 of PhoneControl.NET has been released!
Beside a few enhancements, this version mainly was focusing to increase the
stability and performance.
Read all about the recent changes here:
The Setup is waiting for download here:
Enjoy the new version!
Obviously the download location has been taken out.