Sony have taken quite some measures to prevent all you naughty boys out there to go along Jack Sparrow’s way, but it seemed to be effortless. Yes, you may be forced to install firmware version 3.50 along when you install your Medal of Honor, and which may be the cause of the delay for Gran Turismo 5, but now all this seemed to not matter anymore. PS Jailbreak has announced downgrade support for firmware 3.42 and 3.50 “and beyond”. Now, bear in mind that this will not let you play 3.42 or 3.5 games, but let you downgrade your firmware from those versions to an earlier, hackable releases so that you can play your older hacked games.

SOURCE via PS Jailbreak