Well, all this is very interesting but no one has asked what effect hacking the firmware will have on warranty issues.
I guess if you do change it and something goes wrong and the original V1.30 can't be reloaded, there would be a charge from Pentax agents to fix it.
Having said that, I wouldn't mind having my name as the owner as has been mentioned previously, the extra ISO would be cool too. In the interim, I will wait and see if anyone hacks this successfully AND tests all functions to make sure there are no hidden goolies!