Something I ran into when trying to activate my XM . Did the signup online both because the setup was cheaper and Duh we hang online. I prepaid 1 year with CC and printed out the "Congrats your XM Radio Activation is complete" receipt. I went on to do other things and thought I'd complete the channel sequence activation when the temp/humidity cooled off some.
Well , when I went to do this I had no luck. The radio would say "updating" but not stay at the channel and revert back to Ch 1...
So I called the 800 # and pushed the buttons and talked my way thru a strong accent on the other end.
Bottom Line : When you activate your XM service they send a Refresh signal (ping) to your CH0 unique Radio. You have ONE HOUR to complete the activation process (selecting certain channels) - which I did and within two minutes I was receiving Satellite Radio.
BTW-The Refresh can be resent just by following the existing member sequence.
My first two Presets are CH 71 and CH 146 ... Back to mounting decisions...