I reset my 920 (AT&T, GDR2) and as soon as it finished updating the Nokia apps it stopped playing music in stereo, it's only coming out of the right channel. It worked fine right after the reset, but after it finished the updating it went bad, which makes me think that the audio settings download killed it somehow. Very infuriating, this phone has been nothing but trouble and I was hoping the reset would solve it, but apparently all I got was a new problem.