Well, that didn't take long. Sony has just pushed out a firmware update for the PlayStation 3, with users reporting that it "breaks" devices like the PSJailbreak.
Able to circumvent the PlayStation 3's copy protection and allow users to run games installed to a hard drive, a flood of these jailbreak contraptions have hit markets around the world in the last two weeks, along with a free, downloadable version for more tech-savvy users.
Gaming site eXophase claims that, since Sony released firmware update 3.42 earlier today, it has been able to verify that "all variants of the USB-hub emulating exploit (PSFreedom, PSGroove, PSJailbreak) are no longer functional".
It's far from the end of this war - many of the device's suppliers claim that they in turn can update their devices to get around Sony's future firmware - but for this week at least, it seems to be the end of this battle.
We've contacted Sony for confirmation on this, and will update if we hear back.
UPDATE 1 - Sony's PlayStation Blog says the update "includes additional security features".
UPDATE 2 - The European PlayStation Blog has a little more detail, saying "A patch has been added to address security vulnerability in the system software".