Posted by Jayce Ooi as Software
Still using Windows Mobile on your HTC HD2? And if your HTC Audio Booster is not the latest version 2.5. Here is the time for you to upgrade it. I believe latest HTC HD2 ROM should have it. As I know, Energy ROM that I am using months ago has it already. But I did not enable it until now.
Download HTC Audio Booster v2.5 for Windows Mobile here.