Sorry, don't know.

@SickandTired I have been using firmware 20240718 since last summer on my X55s. It has been solid.

@rhbmcse Assuming you are connecting to the two Decos wirelessly. Does the second Deco have to be on the far side of the living room to get signal elsewhere in the house? Have you tried moving it...

@webchap123 Have you tried subbing in one of the other two X55s for X55 you think no longer works, and using the app to set it as the main X55? And could you tell us what kind of internet you have...

So glad I logged in here before accepting the upgrade offer from my X55s!

@Anniepants35 What does "very slow" mean? Using speedtest.net what upload/download speeds are you getting? How many Mbps should you be getting from Virgin?