Jailbreaking Apple devices has been accomplished over time through a combination of clever hacks and persistent attempts by some notable iOS hackers. However, every time Apple rolls out a firmware update, it puts at risk the jailbroken devices. Because updating a jailbroken device can render the jailbreak of that device null and void.
Now that Apple has shipped out a firmware update for iOS, called iOS 5.1.1, iOS hackers are warning users of iOS devices that if they have their devices jailbroken, they should wait before updating. This should be done so that iOS hackers can find a way around the security measures fitted into the new update.
Usually Apple patches up any loopholes which iOS hackers make use of when jailbreaking devices. That is why with every new major release of iOS, these hackers have to put their efforts into hacking it all over again and find an exploit in it. For instance, the iPhone-Dev team was able to find a tethered jailbreak for iOS 5.1.
However, iOS 5.1.1 is not that major an update for iOS devices. And although it comes equipped with a number of fixes for AirPlay video playback and online iOS purchases, it may not be very hard on jailbroken devices. Still, if you are using a jailbroken iPhone or iPad, you should wait before you receive the get-go signal for hackers like Pod2g or MuscleNerd who, for now, are warning users not to update to iOS 5.1.1.
Source: MuscleNerd (Twitter)
Courtesy: iClarified
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it puts at risk the jailbroken devices. Because updating a jailbroken
device can render the jailbreak of that device null and void.