This update will remove the Evasi0n jailbreak and it cannot be jailbroken using existing methods.
In order to unlock a smartphone without carrier permission, it must be jailbroken first.
FORBES: How To Protect Your Company Against The Risks Of Unlocked Phones
Last year, jailbroken iPhones were infected with an iPhone OS worm known as Ikee.
That means, for this latest exploit at least, jailbroken and patched iPhones and iPads are potentially safer than unaltered devices.
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These devices can be jailbroken using a tool called Redsn0w, although that jailbreak is for now a tethered one.
Additionally, jailbreaking can leave your phone vulnerable to hacking and malicious attacks, including an iPhone worm that specifically targets jailbroken phones.
FORBES: How To Protect Your Company Against The Risks Of Unlocked Phones
The problem with the jailbroken iPhones is that it just makes them more open to cyber crime than a factory iPhone.
And piracy is possible on non-jailbroken devices too (with a dev workaround).
For example, because the device is also now jailbroken, if a third-party app crashes your iPhone, Apple will not likely support the device.
FORBES: How To Protect Your Company Against The Risks Of Unlocked Phones
And that patch, called PDF Patch 2, can only be installed on jailbroken iPhones and iPads, leaving other users vulnerable to a copycat PDF attack.
FORBES: JailbreakMe Hackers Expose Gaping Security Hole In iPhones--And Fix It Only For Jailbreakers
It is true that piracy is easier to do on jailbroken devices, however the OS has the be further modified in order to install pirated applications.
Evasi0n, on the other hand, requires a USB connection between the device being jailbroken and a PC, vastly reducing the risk that it could be used for malicious purposes.
Jay Freeman, aka Saurik, the founder of Cydia, the app store for jailbroken iOS devices, said in a 2011 interview that the share has historically been around 10%.
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In the six weeks since evasi0n was released, however, close to 18 million devices have already been jailbroken, according to data from Jay Freeman, the administrator of the Cydia app store for jailbroken devices.
Today, two days after Hooper uploaded the the demo on YouTube, developer Kyle Howells has released a working version of it as a free app on the Cydia platform (that works with jailbroken iOS devices).
FORBES: It Takes a Jailbreak: Cydia Community Releases iPad Text Edit Hack As a Working App
But demand, at least, seems strong: Jay Freeman, the founder of the app store for jailbroken devices known as Cydia, says that at least four million unique devices have accessed his servers since evasi0n launched.
FORBES: After Evasi0n, iOS Hackers Have More Exploits In Store For Apple
Using a jailbroken iPhone and unidentified cable, the concept is simple and not-entirely new: Microsoft has something similar out for a while called Microsoft Surface, which Forbes got an early peak at a few years ago.
Jay Freeman, the administrator of the app store for jailbroken Apple devices known as Cydia, says his software market received that number of visits from jailbroken iPads in just the last month, a growing number driven in part by the release of a new tool known as Evasion that removes download restrictions on the latest versions of the iPhone and iPad.
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