According to some websites, the twist counter clockwise removal of the headphone pad is indicative of a fake beats solo HD, the genuine ones have fixed pads apparently. I can't guarantee this, but I do have a set of solo HDs with a faulty speaker and I can't easily remove the pad either
Excellent guide, took me 40 minutes to repair my daughters iphone 5 with failed backlight. Watch the video first and make sure you power off the phone to avoid frying motherboard components.
Also you need to swap over the clear plastic front camera housing - really easy, but not mentioned in the guide.
Thanks for an excellent guide - saved me a bundle and my daughter thinks I'm a hero!