Just tried again today and was able to get this working. Cable box FW still on 4.0. Use Composer Pro on laptop and not Composer Express. My issue before was the cable box wasn’t getting an IP address. Randomly I noticed an Arris device connected to router so figured that must be cbl box and it was. I also found on Comp Express app I wasn’t able to change the IP in advanced settings on the Xfinity IP driver. Instead went into PC version of Composer Pro and the Connection > Network tab and changed the IP there. Then the thing that made it work was hitting the “Pair to Xfinity” button under Sys Design>Xinfity Driver >Actions tab. Also noticed when I goto cbl box secret menu (Hold Xfinity 3 secs, down, down, 3) and goto Remote Controls, I do see IP Control enabled True, but still dont see any IP or Mac listed. But IP control does work.
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