Weird question: Possible to downgrade iPhone 6 from iOS 12 to 9?
This seems to be an odd question that I can’t find anything about online.
TL;DR: Is it possible to downgrade an iPhone 6 running the latest 12.1 code to 9.3ish?
The long version of why I want to do this is that I have an iPhone for exactly one purpose, which is to run Spotify in my car. It’s a BMW and the Spotify app integrates with the factory head unit so I can browse playlists and stuff like that. In Spotify 7 the app supported thumbnails of album art, in Spotify 8 and later they killed this in favor of generic icons, which is ridiculous. About the only way I can think to make this work is to downgrade the version of iOS to something unsupported by Spotify, and use the corporate/legacy version of iTunes to download an old version of the app to the phone. That might not even work, but I’m curious to experiment with it.
Thanks for any help you can offer.