How to Fix the iOS 4.2.1 Disappearing Music Problem

Posted November 23, 2010 at 10:40am by iClarified · 12554 views

If your music has disappeared after updating to iOS 4.2.1, there is an easy fix.

Users in the Apple Discussion forums have found that if you plug your iPhone into the computer, open iTunes and play a song from on your device, then sync, the music will magically reappear.

Give it a try!