My issue is with version 3.5.3. I know this version is not supported anymore, but hoping someone has a fix to my problem.
I'm using an old iPhone 4 (that can only run 3.5.3 as it can only run iOS 7), with a composite TV out. I plan to use this mainly to plug into my car's home theater system to play movies for the kids. When I play synced movies, there is a random audio crackle/pop every 10-15 seconds.
I've tried different cables, even different aux inputs in the car, and even different TVs in my house. They all have the audio issue.
I actually started with 3.5.1, had the audio issue, then upgraded to 3.5.3 (and resynced the same and different movies) and the problem still occured. Any help is appreciated!