How to install Apple iPhone 3G (iPhone 1) firmware iOS 4?

This package provides the installation files for Apple iPhone 3G (iPhone 1,2) Firmware iOS 4.2.1. 1. Download the firmware to your hard drive 2. Connect your device to your Mac or PC using the connection cable 2. On Macs OPTION-click and on PCs SHIFT-click the Update / Restore button in iTunes 3.

What is iOS (iPhone/iPad/iPod) firmware?

Wait for the iPhone / iPad / iPod to finish the process iOS (iPhone/iPad/iPod Firmware) is a collection of firmware update files (IPSWs) for Apple’s popular iPod and iPhone devices. The IPSW files provide a very quick method for updating the software on your iOS device via iTunes.

Can My iPhone 3G run iOS 4?

While iOS 4.2.1 is still available for iPhone 3G and iPod touch 2G, they are barely capable of running it, and that too without the goodness of multitasking, wallpapers and Folders.

How do I update the firmware on my iPhone/iPad?

Download the firmware to your hard drive 2. Connect your device to your Mac or PC using the connection cable 2. On Macs OPTION-click and on PCs SHIFT-click the Update / Restore button in iTunes 3. Select the IPSW file you downloaded to update / restore your device 4. Wait for the iPhone / iPad / iPod to finish the process

How do I download iOS 4 2 1 on my iPhone?

iOS 4.2.1 comes as a universal firmware for iPhone 4, 3GS, 3G, iPad, iPod Touch 4G, 3G, 2G. To install iOS 4.2.1 on your device, connect your iPhone/iPod Touch/iPad to iTunes 10.1, new firmware availability message will appear then hit the “Download and Install” button. You can also download iOS 4.2.1 firmwarefrom the links below.