In this how-to video, you will learn how to update your iPhone or iPod touch to 3.1.2 firmware for free. First, make sure you have iTunes installed on your computer. Download the correct firmware for your specific model on the internet. Once this is download, open iTunes and select your device. Hold the shift key and click restore. Select the firmware file and open it. Hit the restore button in the new window. This will then update the device. This may take a while. Once it is done, the update is complete. By viewing this video, you will learn how to easily update your device's firmware. This will give you access to newer features.