Arris SB 8200 switching from 3.0 to 3.1

Hi, 

I have had my own Arris SB 8200 3.1 modem for a few years now. It's hooked up to my Synology router. I have had this set up for a few years now. About 6 months  or more ago, Comcast added, what I think, is a signal booster (ac powered) that sits near where my cable comes in from the street. This was to correct an issue I had for many years of modem rebooting during the day due to signal issues.

I have the modem out in the open in my office - so I normally can see it through out the day. I have noticed within the past 2 to 3 days that the second light on the modem from the top (first light under the power light) will constantly switch from yellow to blue - which I believe is showing an issue from going from 3.0 to 3.1.

I have power cycled the modem itself and that has not changed the issue - 

Do I need to power cycle the booster as well? 

Or do I need to get a new modem 

Or a service call as this might be out of my control?

thanks