No bridge option

Hello, Bjo1112! Thanks for reaching out to our XFINITY Community forum with your modem upgrade request. We would be more than happy to help you with reviewing your modem upgrade eligibility to be able to use bridge mode. 
Please send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account. 
To send a Direct Message, please click on the “Direct Message” icon in the top-right corner of the screen, next to the bell icon, click the "New message" (pencil and paper) icon, then type or select "Xfinity Support". Type your message in the text area near the bottom of the window and press Enter to send your message and initiate a live session.  

@Bjo1112 @XfinityNatalie 

This is a known issue that is being worked on by their engineering dept.

Thank you for working with us here on our Community Forums @Bjo1112 and I'm glad we were able to help get you a new XB8 quickly! If there is anything we can do for you in the future, please don't hesitate to create a new post here on our Forums and we'll be happy to help! Have a fantastic rest of your week. 😀

The XB8 must have updated to the new fixed firmware when it got activated.

Hmm ... not what I was just told: ( I have an XB10 (XER10, actually, I'm told it's the same thing) ... "As it is the latest modem and the most powerful and advanced modem, we cannot enable the bridge mode; we can only enable the bridge modem in XB6, XB7, and XB8." This is what I was told in an online chat with Xfinity customer support. Is this true? ... who knows. I DO know I also have no option to enable/turn on bridge mode on my XB10/XER10 when logged in as admin. I want to set up a mesh network (Deco - three devices), and it is HIGHLY recommended to put the ISP router in bridge mode to avoid network/NAT issues.

@user_d1qug0 

See this; 

https://forums.xfinity.com/conversations/your-home-network/memberowned-router-options-for-xfinity-fiber-service-epon/6a6cb9c0b3ed1847a0acc1cf 

6-month-old topic now being closed.