Welcome back to our Community Forums! Thank you for your post, and I'm sorry to see that you're having some issues with your new V6 box.
I'm sorry to hear that the user manual provided with the TV box is out of date. I will feed this back to our teams to investigate further. I can see that our valued Community members were able to provide some further assistance. Have you been able to resolve your series link issue through the online manual that @japitts provided?
Please let us know if you need any further assistance.