As jailbreak

Make the jailbreak your iPhone, iPod Touch or iPhone allows us to skip all the barriers and arbitrary limitations imposed unfairly by Apple. It is the easiest way to have free access to a series of unauthorized applications and maximize the customization of our team. Doing so is relatively simple and the process will be detailed below.

From the iPhone Dev Team comes the new version of Redsn0w, allowing us to do the jailbreak on 4.2.1 IOS devices. To start we have this update IOS, version 10.1 and iTunes update or restore our software to IOS firmware using the IPSW file that corresponds to our device.

Then we download Redsno0w 0.0.6b4 (for Mac or Windows ) and run it, superimposing to IOS 4.2.1. Then install Cydia following the menu instructions. Then we simply turn off the device when plugged and touch "next". Finally, quickly press "power" while pressing "Home". We maintain a few seconds and release the first "power" left "Home" button until the installation begins.