英文介绍苹果系统越狱

1、how much do you know about “jailbreaking” ?-by liliangpart one what is jailbreaking jailbreaking is the process of removing the limitations imposed by apple on devices running the ios operating system through the use of custom kernels. such devices include the iphone, ipod touch, ipad, and apple tv.

2、part twe reasons for jailbreaking n to expand the feature set limited by apple and its app store .nmost jailbreaking tools automatically install cydia. it is a native ios apt client used for finding and installing software for jailbroken ios devices. since software programs available through cydia a

3、re not required to adhere to app store guidelines.app store symbolpart three types of jailbreaks n1. “untethered” jailbreak(完美越狱完美越狱) :it has the property that if the user turns the device off and back on, the device will start up completely, and it will have a patched kernel in other words, it will

4、 be jailbroken after each reboot. n2. tethered jailbreak if the device starts back up on its own, it will no longer have a patched kernel, and it may get stuck in a partially started state; in order for it to start completely and with a patched kernel, the user has to start it with the help of the j

5、ailbreaking tool. part four history of ios jailbreaking tools n 1. in july 2007 :developers released the first jailbreaking tool for the original iphone.n 2. in october 2007: jailbreakme 1.0 (also called appsnapp) allowed people to jailbreak iphone os 1.1.1 on both the iphone and ipod touch. n 3. in

6、 july 2008:the iphone dev team released a version of pwnagetool to jailbreak the new iphone 3g on ios 2.0 as well as the ipod touch .device/osrelease datedate of first jailbreaktooldeveloperiphone/ios1.0june 29, 2007july 10, 2007(no name)iphone dev teamiphone 3g/ios 2.0july 11, 2008july 20, 2008pwna

7、getooliphone dev teamios 3.0march 17, 2009june 19, 2009pwnagetooliphone dev teamiphone 3gsjune 19, 2009july 3, 2009purplera1ngeorge hotzipadapril 30, 2010may 3, 2010spiritcomexios 4.0june 21, 2010june 2123, 2010pwnagetooliphone dev teamiphone 4june 24, 2010august 1, 2010jailbreakme2.0comexipad 2marc

8、h 11, 2011july 5, 2011jailbreakme 3.0comexios 5.0october 12, 2011october 13, 2011redsn0wiphone dev teamiphone 4soctober 14, 2011january 20, 2012absinthepod2g, chronic dev team, iphone dev teamipad (3rd generation)march 16, 2012(none publicly released)device/osrelease datedate of first jailbreaktoold

9、eveloperpart five bad effect of jailbreakingn installing software published outside the app store has the potential to affect battery life and system stability if the software is poorly optimized or frequently uses resource-draining services (such as 3g or wifi). part six jailbreaking is “legal ”？n the u.s. copyright office explicitly recognized an exemption to the dmca to permit jailbreaking in order to allow iphone