Alpine CDE-172BT Bluetooth CD Receiver, a Pair of Kicker 43CSS654 6.5" Components, a Pair of 43CSC654 6.5" Speakers

here's how to correct the issue of BTA no dev trying to connect your phone to your Alpine stereo this is the stereo model see de 172 BTW i had my device connected for a long time i had and then at some point I just stopped connecting I couldn't get it to connect and all I could get was this BTA no dev and so the best way to go around it the only way that I found that works is to actually reset the stereo so be prepared to do that you'll have to reset the clock your display colors everything like that but it did work for me what you want to do before this is go to your phone forget the device so make sure that you have forgotten the stereo so that way we start with a fresh connection to reset the device you're going to hold this button right here to the right of the volume that's the one with the circle and the little lines next to the circle hold that along with the number 6 for about 3