Apple Hopes to Thwart Jailbreakers with iOS 5

When Apple releases iOS 5 later this fall, users who like to jailbreak their devices might find the process more complex than usual.

While perusing the code for iOS 5 beta 2, the members of the iPhone Dev Team discovered Apple is putting measures into place to make it more difficult for iOS 5 users to rollback to earlier versions of iOS.

It isn’t uncommon for more advanced users to want to try out the latest non-jailbroken software and then revert back to an earlier version so that they can take advantage of their jailbroken features. The current workaround is for users to backup their SHSH blobs before upgrading the software. This ensures that an older version of the OS and firmware can be restored at a later time.

With iOS 5, Apple is changing the way that the blobs are created. The blobs will be regenerated every time a device is rebooted, meaning that simply having an old version of the key around won’t allow users to install an older version of the software.

While this doesn’t prevent groups like the iPhone Dev Team from finding exploits and providing tools so that users can jailbreak their devices, it might make keeping a device in a jailbroken state more difficult.

With iOS 5, Apple will also be looking at doing over-the-air OS upgrades, meaning that the software can update itself without needing to connect with iTunes. In theory, this means that Apple could push out small updates to patch exploits, preventing a user who has agreed to install said update from jailbreaking their device.

On its blog, the Dev Team doesn’t sound overly concerned about what this means for jailbreaking in general but does note that Apple has “stepped up their game” when it comes to locking down the OS. We’re sure the cat-and-mouse game will continue.

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You Learn More From Movies Than Newspapers

Charles Ferguson’s Inside Job indicted five administrations’ worth of politicians, bureaucrats, economists and business executives in its dissection of decisions that led to the creation of the current financial abyss. It did so in a way that was as easy to understand as it was non-partisan. It was only one of a handful of documentaries that endeavored to explain how the U.S. – the so-called “greatest country in the history of the world” – gets stuck to tar babies, from which it can’t shake itself loose. Ferguson’s previous doc, No End in Sight, had described how America bungled its promise to bring freedom to Iraq, by ignoring the necessity for a post-victory strategy. Filmed in a remote corner of Afghanistan, Restrepo reminded us of both the heroism and dedication of American soldiers and the futility of keeping them in harm’s way.

By exposing the poisoning of citizens living near drilling sites, Gasland very much resembled a sequel to Erin Brockovich. Exit Through the Gift Shop” asked viewers to decide for themselves the difference between art and vandalism, reality and fantasy. By putting an entertainment icon under a microscope, Joan Rivers: A Piece of Work once again asked, “What price fame?” Babies chronicled the first year of life for children in four disparate locations around the globe. The Lottery took us to a publicly funded charter school where enrollment – and a child’s future – is determined by the luck of the draw. Chris Rock’s Good Hair explained why it’s never a good idea to mess with a black woman’s hair.

It’s the rare documentary that makes more than a million dollars at the box office. Rarer still is the doc that finds distribution outside the festival circuit. It’s on DVD that the films find the most convenient audience, as well as a place to add deleted interviews and background information. Also coming to video in the next few weeks are such high-profile films as Client 9: The Rise and Fall of Eliot Spitzer, The Tillman Story and Waiting for Superman.

Most high brow: “Destricted”
Made in: Great Britain, 2006

The lowdown: “Destricted” is a collection in which international artists like Larry Clark and Richard Prince direct short films displaying their views of contemporary sexuality. The coup de grace goes to Marina Abramovic for her “Balkan Erotic Epic,” which illustrates sexual folkways of Eastern Europe.

Topless babuskas, naked men fondling a hillside … makes you want to book a ticket to Serbia before the closing credits.

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