Not sure if a BIOS update would help, since it should of been fine from the start, but the OP can try anyways. You could try overclocking it, but I doubt you'll be able to do that, since the BIOS might not be capable of overclocking it.
At that price, I'd go with some chinese headsets. Some good ones I recommend are the Kotion Each G2000 and the Kotion Each G9000. Although they'll take awhile to arrive you'll be pleased with yourself.