Download stable IOS 4.2.1 for iPhone, iPad,iPad touch

Apple just revealed stable version of iOS4.2.1 for iPhone,iPad,iPad touch.The new version got lot of advanced features including multitasking, Air Print,AirPlay,Game center etc.

You can update iOS4.2.1 by visiting Apple iOS website or you can download by connecting your Apple device to your computer,All you have to do is open iTunes in your computer and you will get new update message.Just click on download and update to get on to new firmware.

I prefer you not update your firmware till official new jailbreak and unlock tools are available.