You might try your local Comcast xfinity Store but their inventory varies almost daily. You also might try calling 1-800-934-6489 to see if they have inventory available and are able to ship one out to you with a UPS return label.
Finally you can try a PM message to @Comcast_Support to see if they have any inventory of the XG1v4 to ship out. Many of the best and brightest employees have moved along and this consolated id is a good place to try.
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