I thought my iPhone had broken, as my Griffin TuneFlex car cradle would no longer feed music from my iphone to my car stereo.
But no, it seems that Apple has made some change in the IOS 4 upgrade that has broken not only simple interfaces, like my Griffin Tuneflex, but also millions of the iphone interfaces in everything from Honda to Volvo, to BMW, and including Alpine, Pioneer, and just about every aftermarket car stereo.
Apple’s response “what problem?”
Good Job Apple! Glad to see you invest your record profits into product testing and QA.
Is it possible to downgrade back to IOS 3.x? No, not according to Apple.
http://gorumors.com/iphone-not-connecting-to-car-stereo-after-ios-4-2-upgrade/2757077
http://www.product-reviews.net/2010/06/22/ios-4-update-for-iphone-car-stereo-connection-problems/
http://www.tuaw.com/2010/06/28/reports-issues-with-iphone-4-and-car-stereos/