Can you downgrade a Ps3 3.56?

Is it possible to go from a ps3 3.56 back to 3.55 or any other firmware?

if so, then how do u do it?

Jesus man, I thought you might get the hint and search after I deleted this the first time. So, here, I'll do the leg work for you. By typing 3.56 Downgrade into the Google Custom search box on the left side of your screen, this is what I found: http://psx-scene.com/forums/searchre...ade&sa=Go#1066

Please review before you try to post this again.