How to Manually Download and Install Apple iOS 4 Update

iOS 4Apple 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

download iOS 4

  1. To install iOS 4, you simply connect your iDevice (iPhone/iPod Touch) to your computer.
  2. Launch iTunes, select your iDevice under Devices then click “Check for Update” button.
  3. iTunes will download and install iOS for your iDevice. Do not disconnect your iDevice until the update has finished.
  4. 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 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.

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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?

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  • Fazlee

    i have updated my iPod touch 2g to iOS4. wallpaper and multitasking is disabled. have to wait for JB.

  • Aliey Viacheslav

    just installed it last night..doing gr8 so far but i notice all my picture glry got so much noise sigh..

    • Re-sync your pictures and it should back to normal :)

  • I bought my iPHone here in Malaysia and it’s Open-Line when i got it, so i can use any simpack. Will updating my iPhone to iOS4 will LOCK my device? I’m not sure about that, hope you can help me guys…

    • no, update to iOS 4 would not lock your device. :)

      • Thanks LiewCF… excited to update to iOS4..still haven’t downloaded my net connection is too slow.. T_T

      • have another question, How do know if your iPhone was jailbreak or not??? is there anything you can do to check if it is?

        • jailbreak iphone has the jailbreak app, I suppose ?

  • i update mine this morning, still stack-up in “Updating iPhone software” for several minutes now, the progress bar is not moving :(

    • restart?

      • already did.. i was stock in “Restore Mode” cannot restore my iPhone using the firmware i downloaded from the link given here. mine is 3GS

        • It works for me, 3GS too.

          • can you suggest anything? maybe i miss something.. bcoz the first time i upgraded it to iOS4 it was just stock, so i restart it, and there it goes. cannot restore iPhone, error 21

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