We already said that Apple Inc. has been released iOS 4.2, and did you know that, new iOS 4.2.1 8C148 is not small size, it’s almost 0.5 GB on each devices. For iPhone 4 example, the update iOS 4.2.1 8C148 IPSW almost 650MB. That’s bad option for slowly internet connection like me. So I tried to googling and found the solution about it.
After searching somewhere, the best option is Download iOS 4.2.1 8C148 IPSW and restore to your iPhone/iPad/iPod Touch using Manual Method. Before we update manually, please download iOS 4.2.1 for you device
After you successfully download, follow this guide to update your iPhone/iPad/iPod Touch into iOS 4.2.1 8C148. Please notes, you need to update your iTunes into 10.1 before starting updated into iOS 4.2 then follow this guide
- Connect your iPhone/iPad/iPod Touch to the computer.
- Choose your device from the left sidebar.
- Press the Shift key(in Windows) or the option key(in Mac OS X), click on the Restore button.
Or You can update by click update button but in the same time press Shift Key (windows) or Option Key (Mac OS X)
- Now browse to the iOS 4.2.1 8C148 IPSW file and select it.
Congratulations, now you have iOS 4.2.1 Installed on your iOS Devices