My friends 08 Camry has the 3 button home link. We tried to get it to work with his garage door opener but had no luck. The opener is a 2-3 year old Chamberlain with the purple button and the little echo signal (NOT the security+ type with the orange button). The owners manual says hold the garage door opener to the homelink for 20 seconds until it blinks fast. Then it says you have to press the purple button on the opener and then press the homelink either 2 or 3 times until it opens. None of that seemed to work. What is the trick to getting this working? I hope its possible, because then I can program his car to my garage door too (same opener type).