I want to add that after a few weeks, I totally agree with what many people on this (and other) forums are saying. Avin's support is absolutely terrible! I paid the extra money for the Avin unit, thinking that I would get better support and that is pretty much the main reason. We all know these Chinese units are all pretty much the same and there is a savings buying from Alibaba.
Each week, I have sent basically the same information, fault codes related to the rear camera and a few questions. Each time, they picked one question and answer and then they are done responding for that week. I doubt I will buy anything from Avin again.
What does Avin believe will keep people paying more for their product, when they are not offering the one thing most of us are willing to pay the extra money for? Peace of mind and an English speaking support rep if there is a problem.