Apple has released the latest operating system — iOS 4 for iPhone 3G, iPhone 3GS, iPod Touch and iPhone 4 at June 21, 2010. The iOS 4 for iPad will be available later in September 2010. Jailbreak iOS 4 should be coming soon, too.
Update: Here you will learn how to download and install Apple iOS update manually, bypassing iTunes unstable download server. This tutorial works on iOS 4.0 and above.
How to install iOS 4 using iTunes
- To install iOS 4, you simply connect your iDevice (iPhone/iPod Touch) to your computer.
- Launch iTunes, select your iDevice under Devices then click “Check for Update” button.
- iTunes will download and install iOS for your iDevice. Do not disconnect your iDevice until the update has finished.
- Your iDevice would be restarted after installation and… Walla! It is using iOS 4!
Note: Before you install iOS 4, make sure your iTunes has been updated.
If you have a bad connection like mine, you might want to download iOS 4 via a direct download link. It is faster and resumable.
Tutorial after the break.
Direct download iOS 4 firmware, and manual installation
There are couple sites provide direct iOS 4 downloads, I got mine from http://ios.e-lite.org/. Download the firmware that match your iDevice and you would get a .ipsw file like “iPhone2,1_4.0_8A293_Restore.ipsw”.
To manually install iOS 4, you hold “Shift” key (“Option” key on Mac OS X) while clicking the “Update” button in the iDevice tab in iTunes. A dialog box will come up and select the iOS 4 firmware you just downloaded to start the installation.
My two cents
It took me an hour to download and minutes to install iOS 4 on my iPhone 3GS. It works great. The first thing I do is changing the Home Screen’s wallpaper (new in iOS 4).
Have your iDevice updated to iOS 4 yet? What is the iOS 4 feature you like most? What feature you would like to add into iOS?