Isolinux upgrade

Hi, on a few systems such as hdama rackable systems units I am unable to get past isolinux it just hangs on load. The version seems to be an older 3.11 on loading other linux flavours with 3.61 plus it seems to load ok. Is there a way of updating the isolinux on freepbx distro prior to burning to disk or are there any plans to update the isolinux boot to a more modern version e.g. 4 +

Kind Regards,