could you get me a serial number?I'd really like to buy one of those.
You're going to have to figure out which way it's programmed,when you press a button a pin will go high/positively charged,so get a multimeter and analyse which pin goes when when you press a certain button on the remote.
You won't be able to totally reprogram it,the code is flashed in hex and you won't be able to reverse the code to a simpler programming language.