No one at xfinity has the capability to update firmware for xfi pod 2nd generation

I have spent many hours, on  the phone, restarting my modem, taking the xfi app off my phone and re starting, (my wifi sign is strong) trying many ways as well as 2 techs visit trying to activate a xfi pod 2nd generation.  One person on the phone said the problem was the firmware, and ones again sent out an Tech,  come to the conclusion per all tech support as well as in home visit Techs that there is no way to update the firmware.   I even tried difference pods.  None worked.