Well that was fast. Here we are, not more than two days after the Skype-granting PSP 3.90 firmware was released, and a new custom firmware comes along to let PSP owners run homebrew and/or pirated programs yet again.
While there aren't many exciting new features for this quick and dirty custom firmware upgrade, we should note that the M33 line of hacks now has the ability to download updates directly from the internet via Wi-Fi using the PSP's built-in Network Update tool. When PSP users don't even have to be tethered to a computer to break Sony's copy-protection, what chance does Sony really have of stopping them?
[Via PSP Fanboy]