Jailbreak process will approximately take 10 minites.Choose your iphone model which will display on the screen and select jailbreak button.Attach your idevice to the pc via USB cable put in idevice your into DFU.Take out the Geeksnow 2.8.3 file on to the pc screen right click on that exe folder Click run as an Administrator.Simply Download Geeksnow 2.8.3 using the link provided.Other idevices not supported for geeksn0w.For an in depth explanation how to jailbreak Please follows us continuously SUPPORTED DEVICES Due to the information Geeksnow 2.8.3 functions with windows & Mac productively. latest geeksnow 2.8.3 allows to semi tethered jailbreak for the I phones mentioned above.this new version is very useful and will certainly help a lot of iphone 4 users in semi tethered jailbreakig iOS 7.1.1. Particularly this report for I phone users that own iphone 4 Global and AT&T, iphone 4 Revision A, iphone 4 CDMA running iOS 7.1.1.