I have a Slingbox 350 that I have hooked up to my XFinity X1 box. When watching in my iPhone using the Slingbox app I am unable to change the channels either by typing in the channel number or using the remote. I went on my PC and am able to watch my Slingbox and change the channels but it has my old remote control showing. I am attempting to update my remote through the Slingbox website and it shows the correct model of the remote I want but when I choose it all it says is, "Checking your onscreen remote" and stays in that loop forever and never does anything past that. I am guessing that because the Slingbox website still shows my old remote this may be the reason why I am unable to change channels when watching on my iPhone. But since I can't get past the "Checking your onscreen remote" screen, I can't know for sure. Any help would be MUCH appreciated!!! Thank you in advance!