Spidey

I recently upgraded to 8.30 and now I can't use my iPhone 4S or iPod nano. I already tried switching to "Other" in the settings, and have tried running the AppRadio app, and the CarMediPlay app. Could anyone instruct me how to downgrade, if its possible, or how to get this working again? I've already opened the older 8.15.HAT with a text editor and changed the version to 8.30 and that didn't work. I also contacted pioneer but I've yet to receive a reply. Any help would be very much appreciated.