XRE 10007 Error on companion box

I recently upgraded a few boxes in my house. 

Swapping out the DVR (Xg1-P) for the Xi6-T since we have a 4K TV.

Swapped an old DTA box for a wireless Xi5-P.

and kept my Xi3-P in the bedroom.

Ever since setting up the 2 new boxes, the Xi3-P in the bedroom won't connect. It just keeps saying "caught us in the middle of an update" with the error code XRE-10007 and asks if I want to reboot all the boxes in the house. I have cycled through this numerous times and nothing.

I spoke with someone at Comcast before ordering the new Xi6-T box and was told the Xi3-P will still work without the bulky Xg1 to piggyback off of. Well as suspected, it doesn't!