How could it “try” to change its code, if mutations are random?
=Epigenetics is not a magic code word that makes the random go away.
Epigenetics won't banish all randomness from biology. Indeed, it is impossible to escape at least a certain amount of randomness because of the Fall. But epigenetics is quickly replacing randomness where randomness once ruled supreme. Let's face it, Darwinian evolution is on the way out...this is something epigeneticists have known for a long time:
Why Lamarck Wont Go Away (1995):
“It would appear that neo-Darwinian theory has been seriously, if not fatally, undermined by the discoveries of these fluid genome processes at least ten years ago.”
http://www3.interscience.wiley.com/cgi-bin/fulltext/119951287/PDFSTART?CRETRY=1&SRETRY=0
But don't worry, I think you will find that your fellow evos aren't so much wedded to Darwin as they are to evolution, and it will only be a matter of time before they insert a new godless evolutionary theory in its place. Trouble is, the field of epigenetics constitutes a powerful argument in favor Creation/ID. You guys are going to have one heck of a time convincing the public that epigenetics is the product of blind chance.
Epigenetics doesn't support ID or Creationism any more than any other biological phenomenon that is subject to random mutation and natural selection.