The Yamaha AN1x Synthesizer mailing list

I don't know if this is common knowledge or not, but according to yamaha tech support the 
chip is no longer available. I recall someone mentioning 'burning' them. Is that possible? 
Legal? Expensive?

Thought I would throw that out there. I'm at version 1.02, I don't know what the difference 
is...but I figure it's more than the .02 makes me think it is, haha...