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SemiTethered iPhone Jailbreak for free

We have received many emails lately regarding the compatibility of SemiTether Tool, which allows performing the Jailbreak SemiTethered on your device to use some functions. Instead of going into the details of Tool SemiTether, go straight to the point.
SemiTethered iPhone Jailbreak for iOS 4.3.5 and iOS 4.3.4
While BigBoss has only hinted that their tools of SemiTether is compatible with iPhone OS 5, we have tested on a iPod touch with iPhone OS 4.3.5, jailbroken with the latest version of redsn0w, to test the compatibility of the tool with iPhone OS 4.3.5. But as expected, the installation of SemiTether warns us from Cydia, and then you can not continue with the installation, which takes no iPhone OS 4.3.5. The reason? SemiTether is designed only for IOS 5.x.
From the image below, you can see that iOS 5 is a key requirement to use SemiTether, otherwise you can not install the tool and then jailbreak SemiTethered on your device. The latest iPhone OS with which you can run the Jailbreak Untethered 4.3.3 is the tool through JailbreakMe.
Currently, however, the only device that can have an untethered jailbreak iOS 5 is the iPhone 3G with the old bootrom, other than that, any device, including the iPhone 4, all iPod Touch and the iPad 1 may have only the tethered jailbreak on iPhone OS 5 using redsn0w or Sn0wbreeze.
The tool SemiTether is a very ingenious way to get some sort of jailbreak untethered device, a package that is in the repo in Cydia BigBoss, once installed, allows the device to boot normally with some functions without using the computer called for in Tethered mode.
So in a nutshell the Tool SemiTether not work on iPhone OS 4.3.4 and 4.3.5 at the moment is working only on iPhone OS 5 and the two beta of iPhone OS 5.0.1.