Hi Darren, it would appear that the customer is confusing a number of different Tobii Components.
The Bonjour service is not used with the EyeX SDK but rather with the Tobii Pro Analytics SDK, which is not a connected product.
The customer seems to have both SDK installed on their system, and as the bonjour issue is known but not a problem for general operation, I am afraid I do not understand the overall issue they are having.
If the problem is relating to updating the Tobii EyeX software, then I would suggest trying to disable any firewall and/or antivirus software running and trying again.