This is an app for the jailbreak iPhone and other iOS devices for whom there is no untethered boot option. It lets you to access the stock and non-Cydia applications on your device. In other words, none of your jailbreak related stuff will work on it. It is still great for those who are far away from their computer to perform jailbreak again.
To get it on your iPhone, open Cydia and add this repository in the sources section
http://thebigboss.org/semitether
Then, search for ‘semitether’ in Cydia and install it. It is about 100 KB in size.
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