it prob can't be done as it hasnt yet, also theres no reason to really do it with the easy patching from 3.55cfw coupled with 3.6 OFW being live.
if you knew about the hack beforehand.. then you should've got the right ps3 that didn't come with newest OFW... that mistake is squarely on you buddy, not the devs.
if you have to buy a used one off ebay.. then so be it. thats the name of the game right now. you must have a ps3 at 3.55 or below, whining and talking of a petition lol is just crazy.
the tools are already there for public knowledge, code your own cfw3.66 or get a ps3 that can work with the ABUNDANT amount of info provided (i.e. 3.55 fw or below).. the ball is in your court.