What do you mean by hearing a lot of people say that cell phone jailbreak?

Jailbreak refers to opening the user's operation authority, so that the user can erase the running state of any area at will. Only after the successful jailbreak can the file system of iphone be in a read-write (rw) state, and third-party programs and plug-ins without official certification can be installed and run. These softwares were either rejected by the Apple Store for some reason (usually because they violated Apple's regulations or the developers didn't have a MAC system), or the authors refused to pay $65,438+000 to publish their works. After jailbreaking, you can use these softwares.

The biggest difference between iPhone's iOS and other mobile phone systems (such as Nokia's Symbian and Google's Android). ) that is, the latter two are open user rights, while the iOS user rights are extremely low. Simply put, the user rights of the latter two are RW (read and write), while the user rights of iOS are only R (read only). Therefore, users of iOS can only use Apple-verified applications (purchased in the Apple Store), and other behaviors cannot change the system. The advantage of iOS is that compared with other systems such as Nokia Symbian, the iOS system is extremely stable without jailbreaking, and the death probability is extremely low.

Two: jailbreak tools

Jailbreak is to change the operating authority in the device by cracking the jailbreak tool produced and released by the team and taking advantage of system vulnerabilities. There are five different jailbreak tools: redsn0w made by Chronic Dev team, limera 1n made by geohot in Recreation, and the latest evasi0n, jailbreakme (for IOS 3.1.2,3.

The latest version of Perfect Prison Break supports the following versions:

ipad 1:5 . 0 . 1 5. 1. 1

iPad 2:5.0 . 1 5. 1. 1 6.0 6.0 6.5438+0 6. 1 6. 1.2

iPad mini:6.0 6.0 6.5438+0 6. 1 6. 1.2

iPad 4:6.0 6.0 6.5438+0 6. 1 6. 1.2

iPhone 3GS:5.0 . 1 5. 1. 1 6.0 6.0 6.5438+0 6. 1 6. 1.2

iPhone 4(GSM):4.3-4.3 . 3-5.0 . 1 5. 1. 1 6.0 6.0 6.5438+0 6. 1 6. 1.2

iPhone 4(CDMA):4 . 2 . 6-4 . 2 . 8 5. 1. 1 6.0 6.0 6.5438+0 6. 1 6. 1.2

iPhone 4s(GSM):4.3-4.3 . 3-5.0 . 1 5. 1. 1 6.0 6. 1 6. 1. 1.2

iphone 5(GSM):6.0 6.0 . 1 6.0 . 2 6. 1 6. 1.2

Ipod touch 3rd generation: 4.3, 4.3.2, 4.3.3, 5.0.15.16.06.0.16.10.2.

The fourth generation of Ipod touch: 4.3-4.3.3, 5.0.15.1.16.06.0.16.2.

Ipod touch 5th generation: 6.06.0.16.16.12.

Three: Support equipment

-iPod Touch 3G non-8G version

- iPod Touch 4G

- iPad 16G

- iPhone 3Gs

- iPhone 4

- iPhone4s，5

- iPad 2、3、4

-ATV 1.2

IV: Version situation

IOS 4.3.3 firmware

On May 4th, 20 1 1, Apple released the news of the firmware upgrade of iOS 4.3.3. This upgrade is mainly to fix the problem of recording user location information in the background of iOS devices. However, the pdf vulnerability in the firmware of iOS 4.3.3 allows all iOS devices to support perfect jailbreak, including iPad 2, which has never been able to jailbreak before. All devices in iOS 4.3.3, including IPad 2, support one-click jailbreak. Just visit the website of JailbreakMe3.0 with a browser on iOS and click Install. cydia can be installed on iOS devices with afc2 patch and appsync patch, so that you can manage iOS devices with management tools such as assistants and mobile assistants on your computer, and you can also install application software on your mobile phone and download and install pirated game software.

IOS 4.3.4 firmware

2011July 17- Apple released the firmware version of iOS 4.3.4, and fixed the PDF file vulnerability of Safari browser in update 4.3.3. So you can't use JailbreakMe to escape from prison.

IOS 4.3.5 firmware

Since the pdf vulnerability of ios escaped from prison, Apple released version 4.3.4, and released a new version of ios 4.3.5 two weeks later, mainly fixing a security vulnerability of certificate verification, with no other functional updates and changes. JailbreakMe cannot be used to escape from prison.

IOS 5 firmware

Apple's latest iTunes firmware iOS5.0. 1, 2011February 27th, the foreign jailbreak team has made a perfect jailbreak tool, redsn0w_0.9. 10b3, followed by 2010b3. 201265438+1On October 20th, foreign jailbreak teams released the perfect jailbreak tools for iPad2 and iPhone4s.

IOS 5.0. 1 firmware

The latest firmware has supported the perfect jailbreak of A4 devices such as iPhone 4, iPad 1, iPhone 3GS, iPod touch 3 and iPod touch 4, and also supported the perfect jailbreak of A5 devices such as iPad 2 and iPhone 4S.

IOS 5.0. 1 firmware

201On March 8th, February, Apple opened IOS5. 1 to download the update, which has supported the semi-perfect jailbreak of A4 devices related to iPhone4, but A5 devices do not support it for the time being.

IOS 5. 1 firmware

At 2 am on March 8, 20 12, Beijing time, Apple announced the launch of iOS 5. 1 operating system, but did not close the firmware recovery of its old iOS 5.0. 1 operating system. As of 00: 00 pm on March 9, Apple officially turned off the firmware recovery of iOS 5.0. 1.

Turning off the verification of 5.0. 1 means that it will be difficult or even impossible to downgrade the iOS 5. 1 device-it depends on your previous preparation. Maybe some novices don't know it yet. Turning off the verification of 5.0. 1 also means that if your device is a system before 5.0. 1, you can only upgrade to 5. 1 when you want to upgrade.

IOS 5. 1. 1 firmware

Beijing time 2065438+May 8, 2002, according to foreign media reports, Apple released version 5. 1. 1 of the operating system software for iPhone on Monday, which provided many patches to fix various defects, including problems that affected the video playback function of AirPlay.

According to foreign media reports, Pod2g released the release page of the perfect jailbreak tool Abstract2.0 for iOS 5. 1. 1, but he did not disclose the release time of Abstract2.0. Subsequently, the Green Poison team updated the specific release time of the perfect jailbreak for iOS 5.1in official website.

The official release time of absinthe 2.0 is 2: 30 pm Amsterdam time.

IOS 6.0/6.0. 1/6.0.2 firmware

Apple released the official firmware download for iOS6.0 on September 20 12 19 at 1 midnight on time. IOS6 firmware download will support iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPad 2, iPad 3, iTouch 4 and iTouch 5 accordingly. Except for the iPhone3gs in the bootroom, IOS6 can't escape from prison perfectly.

IOS6 can use Red Snow Redsn0w 0.9. 15b3 to realize the imperfect jailbreak of the official version of iPhone4 in iOS6, and the perfect jailbreak is still in the expectation.

Every time you upgrade iOS, hackers have to re-study jailbreak. With the continuous improvement of iOS systems and devices, the difficulty of jailbreaking is also increasing. Nearly two months after the launch of iOS6 and iPhone 5, hackers still haven't found the perfect jailbreak method. Finally, planetbeing, a famous figure belonging to Chronic Dev hacking team, posted a picture of iPhone 5 with jailbreak plug-in in iOS6.0.2 through twitter, which means that the perfect jailbreak of iOS6 may be coming soon. In the face of questions from fans, planetbeing said that he could not disclose too much. The jailbreak of iOS 6(iPhone 5) still lacks some key parts, although he also hopes to release jailbreak tools as soon as possible.

IOS 6 perfect jailbreak

2065438+February 5, 2003 1, the perfect jailbreak tool evasi0n for Ios 6 was released. This time, the focus is no longer on green poison, but on "three-way muscular man" The "evad3rs" team composed of four hackers, namely pod2g, planetbeing, pimskeks and Muscle Man, released the perfect jailbreak tool evasi0n for iOS 6 (except iOS 6.1.3).

This jailbreak is similar to IOS 5.0. 1/5. 1, which is a one-click jailbreak, so the whole jailbreak process will not take too long. One thing to note after a successful jailbreak: Don't add plug-ins at will! Because many Cydia tools have not been updated to support iOS 6[4], adding them at will after excitement is likely to turn the device into Apple.

-Back up device data, including SHSH, before jailbreaking.

-Cancel the screen lock password of the device first to prevent accidents when jailbreaking.

-Don't do anything to the computer until the jailbreak is finished (best)

IOS 7 jailbreak

20 14 iOS prison break has been scheduled to be held in San Francisco convention center on April 12, and the press conference is getting closer and closer. Fans have higher and higher expectations for the perfect jailbreak of iOS7. 1. The great god pod2g hinted on Twitter a few days ago that it would launch the perfect jailbreak tool of iOS7. 1 Will it be released at this grand event of the global jailbreak god? PP assistant will pay close attention to fruit powder.

The much-anticipated WWJC20 14, Evad3rs members pod2g, iH8sn0w, planetbeing, Saurik, the father of Cydia, and p0sixninja, the former Green Poison Brother, will attend WWJC 20 14. Not only is the lineup of participants very strong, but it is reported that the great gods will discuss prison break around iOS7. 1, which is related to the facts. [5]

Five: Advantages and disadvantages

First, don't escape from prison

Advantages:

1. Save power [1].

2. The system is relatively stable.

3.3. The software downloaded and installed by Apple Store has strong compatibility.

4. The software downloaded and installed by Apple Store (ipa format) will not leave redundant system junk files after deletion [1].

Disadvantages:

1. System-level software, such as incoming call, SMS display of attribution, SMS receipt, flash, can never be realized without jailbreaking on iphone.

2. The system authority is very low. For example, we can't delete system programs, modify system files and settings, encrypt a program, send files with Bluetooth, use third-party input methods, etc ... and third-party software can't be realized. Why? Application developers want to put on the APP Store, and their works must also be approved by the Apple App Store.

3. Only free programs, fast-moving programs or software downloaded from App Store can be installed. Software without account certificate (such as piracy. Ipa, pxl) cannot be installed.

4. Personalized programs such as themes and icons are irreplaceable.

5. You can't use your mobile phone to download files directly in the browser and manage files on your mobile phone.

Second, after the prison break

Advantages:

1. On the basis of the original background running function when iOS4.x was not jailbroken, some programs that do not support background running can support background running.

2. The system has high authority and can optimize the system and modify the system files by itself. You can install more software with high system authority and realize more advanced functions! For example: sending files with other devices via Bluetooth, SMS receipt, call attribution, call answering vibration, file management, browser downloading plug-ins, flash plug-ins, content management, etc.

3. You can change the theme, icon, SMS ringtone, etc. Create a personalized mobile phone.

4. You can flexibly manage the system or other files with the help of third-party file management software. Think of the iphone as a removable hard disk (USB flash drive).

Disadvantages:

1. It needs electricity. After jailbreaking, the system will always keep some processes in jailbreaking state. Depending on the number of installed system-level software (deb format), in some cases, the power consumption speed will increase by about 10% ~20% after jailbreaking.

2. It may cause system instability. While we have high system authority, we are also in danger of system collapse. Can you understand this truth? It can be revised, but it cannot be guaranteed to be corrected forever. Therefore, system-level software is in short supply, so don't install it without knowing its purpose [1].

3. When the new mobile phone firmware version comes out, don't update it in time unless you back up SHSH with iFaith or tiny umbrella. Because every new version of firmware will fix the jailbreak vulnerability of the previous version, jailbreak will be invalid. And Apple's iOS firmware can only be upgraded, not downgraded. Therefore, if you still need to maintain the function after jailbreaking, it is best to wait until the new jailbreaking program is released, and then formally upgrade the corresponding mobile phone firmware version.

4. There is a small bug in the process of jailbreak, but it has no effect on normal use.

5. Using some cracked plug-ins sometimes leads to white apples or system instability. It is recommended to buy genuine plug-ins.

Third, * * * similarities.

Free or paid software downloaded from 1 The apple store can be installed without being affected.

2. It will not damage the hardware, and jailbreaking will not change the hardware on any mobile phone.