The update that is being talked about (like the post says) is for 2012 vehicles only, with RES< REQ< RHB & RBZ radios ONLY. It will not work for 2010 or 2011 vehicles.
Your replacement radio will most likely be a 2010 radio. Because they will go by the PN and the PN for the 2012 is different.
Originally Posted by dgreen3855
It won't work for a 2010 either. I tried for a while trying to get it to work to no avail. But I will try again later next week becuase I have to take mine to the dealer to get a new radio anyway. For whatever reason mine will play DVDs but not CDs. It even installed an update via CD. Whenever I put in a purchased or burnt CD it does not recognize it. I took it to the dealer last week and they said it has some sort of CD malfunction and sent off for another one from the dealer. It is supposed to be in anyday now. So I am hoping although I have a 2010 truck the radio that they will put in will be a "2012" one. Mine is RBZ by the way.