Log into your Comcast account first
and as Comcast is not listed as a service provider for activation use the url below and replace xxxxxxx with your activation code generated by firetv [ all CAPS]
when activation page appears hit firetv and nothing else wait a few seconds and firetv should receive its authorized signal
and you are good to go
https://sp.auth.adobe.com/api/v1/aut...evice%3Dfiretv
h t t p s://sp.auth.adobe.com/api/v1/authenticate?reg_code=xxxxxxx&noflash=true&mso_id= Comcast_SSO&requestor_id=HISTORY&domain_name=histo ry.com&redirect_url=http://www.history.com/activate?device%3Dfiretv
and as Comcast is not listed as a service provider for activation use the url below and replace xxxxxxx with your activation code generated by firetv [ all CAPS]
when activation page appears hit firetv and nothing else wait a few seconds and firetv should receive its authorized signal
and you are good to go
https://sp.auth.adobe.com/api/v1/aut...evice%3Dfiretv
h t t p s://sp.auth.adobe.com/api/v1/authenticate?reg_code=xxxxxxx&noflash=true&mso_id= Comcast_SSO&requestor_id=HISTORY&domain_name=histo ry.com&redirect_url=http://www.history.com/activate?device%3Dfiretv