Thank you for your reply Would it be possible to replace some libs on a rooted phone to make it work? What libraries does it depend on? In general, if there was a possibility to make it work, what would an end user have to do? I did purchase the power amp, however 2.1 was not stable on my phone. Now I cannot make it work at all and after talking to Sony Ericsson they confirmed I need to change the phone for 2.1 to work. The phone is out of warranty now. Anyway, if it is not possible at all I don't mind having 5 dollars donated for a great player!