This time we will not make a guide because it is not a final version, and can only be used officially by registered users and developers of Apple. Therefore we mention only that it is available from Apple.
This update promises numerous improvements for most devices, and highlights the promise of resolving the high consumption of battery in iOS 5. In addition, a fix for Apple’s multitouch gestures on the original iPhone, fixes security problems, improve speech recognition for Australian users and fixes several bugs.
As we note regarding the information, this new version can be jailbroken via redsn0w (guide) and will subsequently install a semi tether package that is safe to use if you do not have a computer nearby and at least start and operate your device in basic mode .