Hi, I'm wanting to get an ATV but I'm unsure which I should get. Basically the main thing I want to do is mirror my iphone in at least 1080p but as I understand it the gen 4 will at some point be updated to 4K, is that right? Another thing that may make a difference is jailbreaking, I would be interested in jailbreaking it as I have with my iP6 and I will be doing with my iP7+ when it's possible. I'm not sure of the advantages of jailbreaking ATV. Thanks in advance.