Apple's iOS Updates Kill Only iPad 2 Jailbreak
July 18, 2011 8:45 AM
comment(s) - last by
(Source: Pinoy Tutorial)
The new update conveniently blocks the only route of jailbreaking to the iPad 2.
OS update also closes a significant security hole
Jailbreaking phones -- removing operating system makers' restrictions on things like OS themes and allowed programs -- is today
Library of Congress
amendments to the
Digital Millennium Copyright Act
[PDF] (DMCA). But just because it's legal to jailbreak, doesn't mean Apple, Inc. (
) will allow it.
Apple argued unsuccessfully to the U.S. government that jailbreaking could allow
terrorists to turn their iPhones into digital weapons
, and could assist drug dealers. Apple refuses to give users an open path to jailbreaking their phones, so users are forced to discover exploits that allow unauthorized code to be run. This is very convenient for Apple as it can justify closing the jailbreak route as a "security fix".
Thus is the case with iOS 4.3.4. The updates' only real action is to fix the mishandling of fonts in PDF files, which previously allowed for jailbreaking -- or malicious code execution.
Users can find the update here, for various devices:
iPhone 4 (GSM)
iPad 2 WiFi
iPad 2 GSM
iPad 2 CDMA
iPod touch 3G
iPod touch 4G
The update is significant as it cripples JailbreakMe 3.0, currently
the only way to jailbreak
Apple's new iPad 2 tablet. Jailbreaks are generally divided into boot-related jailbreaks and injection jailbreaks. Thus far no boot-level jailbreaks work on the iPad 2, due to its new A5 dual-core CPU. And the only injection-based jailbreaks currently in action relied on the PDF exploit.
The original iPad and present iPhone lineup is still jailbreakable via boot-level jailbreaks, such as redsn0w, PwnageTool and sn0wbreeze. There's little Apple can do to prevent these jailbreak routes, much to chief executive Steven P. Jobs chagrin. Mr. Jobs has expressed a
strong dislike for jailbreakers
in past interviews.
While Apple can claim the recent update was to "protect" users, in reality it will only add additional safety to the most careless of users. After all, a program called "PDF Patcher 2" was widely available via the Cydia app store and other sources. The PDF Patcher 2 does pretty much the exact same thing as iOS 4.3.4, but does so
the user has jailbroken.
It is presumable that most users who are knowledgeable enough to jailbreak in the first place would properly protect their phones against malicious code by adding the patch post-jailbreak, especially since the
instructs the user to do so.
So it looks like Apple has won this round. One of its devices is yet again unjailbreakable -- at least for now.
This article is over a month old, voting and posting comments is disabled
The sole effect is to patch the PDF issue?
7/18/2011 12:06:31 PM
In a single word, "Bull!"
The patch has affected several other pieces of software. I personally know of a large company that is busily updating several applications because this patch affects their apps -- including some commercial apps not developed in house -- that have absolutely nothing to do with PDFs.
This iOS update did more than just close the PDF hole. That effect is just the most prominent.
"The whole principle [of censorship] is wrong. It's like demanding that grown men live on skim milk because the baby can't have steak." -- Robert Heinlein
Apple iPad 2 Finally Jailbroken via Safari PDF Exploit
July 6, 2011, 10:25 AM
Library of Congress: Jailbreaking, Rooting Phones, Video Montages are Legal
July 26, 2010, 2:10 PM
Apple Urges Government to Outlaw iPhone Unlocking Over Terrorist, Drug Dealing Risks
July 29, 2009, 4:00 PM
Apple Strikes Back With Update
September 28, 2007, 1:22 PM
Sony Finally Adds 3D Blu-ray Support to PS4
July 24, 2014, 3:44 PM
IDC: Although Apple Remains at Top of Tablet Market, Share Falls from 33% to 26.9%
July 24, 2014, 1:24 PM
Thanks in Part to Strong G3 Launch, LG Sells 14.5 Million Smartphones in Q2
July 24, 2014, 10:18 AM
4.7" Samsung Galaxy Alpha Smartphone Coming Next Month
July 24, 2014, 8:28 AM
Report: Apple to Launch 12" Retina MacBook Air, 4K Desktop Product Later this Year
July 24, 2014, 4:33 AM
Apple iPhone Sales Rise Nearly 50 Percent in China for Fiscal Q3 2014
July 24, 2014, 2:04 AM
Most Popular Articles
Microsoft Kills Entertainment Unit, May Shelve Flagship Lumia "McLaren"
July 18, 2014, 7:40 PM
JJ Abrams Unveils X-Wing Starfighter for New "Star Wars" Movie
July 21, 2014, 12:24 PM
Ford Details ’15 F-150’s 325hp, 2.7L EcoBoost V6; Demonstrates 732-lb Weight Loss
July 22, 2014, 6:55 PM
Comcast Memo: Harassing Customers During Retention Calls Actually IS Our Policy
July 22, 2014, 5:19 PM
Motorola Moto G Successor Reportedly Uncovered, Moto X Discounted by up to $75
July 21, 2014, 1:11 PM
Latest Blog Posts
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
Tesla vs. BMW: Who Has the Safer EV?
Feb 1, 2014, 2:56 PM
Justice Leaks Details of Next HTC One Two Flagship Phone
Dec 5, 2013, 4:04 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information