http://www.iclarified.com/60190/pangu-demos-jailbreak-of-ios-1031-on-iphone-7-video
Tag: jailbreak
iOS 4 pdf vulnerability
Another reason to jailbreak 
If your iPhone or iPad is free from apple you can protect yourself against the PDF vulnerability.
Here is more info:
http://www.iphonehacks.com/2011/07/insta…ility.html
Here is more info:
http://www.iphonehacks.com/2011/07/insta…ility.html
The other option is not to open PDF files from untrusted sources and wait for apple to fix it.
Free your iPhone from Apple
good links to start:
http://blog.iphone-dev.org/
http://www.iphonehacks.com/
http://iclarified.com/tutorials/iphone/index.php
http://www.iphonehacks.com/
http://iclarified.com/tutorials/iphone/index.php
Make sure to read carefuly if you need your phone to be unlocked and used on different cell provider beside ATT.