How To Update to iOS 4.3 From iTunes/Manually

Apple released the iOS 4.3 update for the , and earlier today and it includes a lot of new and exciting features (Read: What’s new in iOS 4.3). Upgrading to iOS 4.3 is a easy task and you just need to connect your device to the PC and check for updates.

iOS 4.3

If you are unsure on how to update your device to iOS 4.3 here are the simple steps to update to the latest OS from Apple.

How To Update to iOS 4.3 Through iTunes

Step 1: Connect your device to iTunes using the USB cable.

Step 2: Once iTunes has detected your device, click on the device name in the left hand menu and click on the “Check for Update” in the device description box.


Step 3: Apple will show you a popup message as seen above if an update for your device is available. Click on the “Download and Update” button.

Step 4: Apple will download the iOS 4.3 update and install it on your device. It is important that you DO NOT disconnect the device from the computer during the process. It is also recommended to keep your computer plugged in to the power outlet during the process.

That’s it. The process might take around 10-30 minutes depending on how long it takes to download the update to your computer and install it. Once iOS 4.3 is installed, iTunes will sync your device and you can use it again.

How To Update to iOS 4.3 Manually

In some cases, the iTunes update process might not work for you for several reasons. In those cases, you can also update your device to iOS 4.3 manually. Here are the steps to manually update your device to iOS 4.3.

Step 1: Download the iOS 4.3 IPSW file for your device using the iOS 4.3 IPSW direct download links.

Step 2: Connect your device to the computer using the USB cable and wait for iTunes to detect it.

Step 3: Once your device has been detected – follow the steps given below for different OS.

  • For Windows – Hold the Shift key and then click on the “Check for Update/Update” button.
  • For Mac OS X – Hold the Option key and then click on the “Check for Update/Update” button.

Step 4: In the next dialog browse to the file that you downloaded from Step 1 and select the IPSW file.

Step 5: iTunes will now use the IPSW file and update your device to iOS 4.3. The process should take around 10-20 minutes.

That’s it. Your device will be updated to iOS 4.3 with ease. Please feel free to post your questions in the comments box below.

Published by

Keith Dsouza

I am the editor-in-chief and owner of Techie Buzz. I love coding and have contributed to several open source projects in the past. You can know more about me and my projects by visiting my Personal Website.I am also a social networking enthusiast and can be found active on twitter, you can follow Keith on twitter @keithdsouza. You can click on my name to visit my Google+ profile.

  • weezel07

    i had 4.1 jailbroken phone and i wanted to update it to 4.3.3. tried updating using itunes holding shift n update and the selcting the 4.3.3 ipsw file. after that an error code appears. unable to perform update. what happen?

  • hey m using ipod 1st generation witout speaker. Does my machine support ios 4? As it could be updated till ios 3.2.

  • I have a ipod 3 gen and it says I don’t have the right firmware so what do I do?

  • zalex

    I have a ipod 3 gen and it says I don’t have the right firmware so what do I do? please help me.

    • Vlastimil Hybl

      i have the same prob!!!!!!!!!!!!!!!!!!!

  • ronald

    I have a ipod 3 gen and it says I don’t have the right firmware so what do I do?

  • Onyebu Frank

    I downloaded the iPsw file for my IPad iOS 5, and did the manual update but in the process my laptop lost connectivity and now my iPad is in recovery mode, how can I put the new OS or restore the old one without having to wait for a new download as I have the ipsw file already.PLEASE HELP!!!

    • @Onyebu Connect your iPad back to the computer and iTunes will ask you to restore again. Let me know if that does not work for you

  • Pearson Gweshe

    I have the file and after pressing shift and sellect the file I’m having a error that is saying firmware not supported, I downloaded it on a computer using xp service pack 2 and my computer is using windows 7. I also downloaded iTunes 10.6 and I upgraded my iTune cause I was using 10.1

  • Tye 22

    Wat can I do if I keep getting firmware file is not compatible please tel me it’s doing my head in ha thanx…….. I don’t no wat else to do

    • Dale

      Forced me to erase and restore. THis was terrible. I did not back up filee.

  • Abednego

    My iPhone cannot download anything what am I going to do cause any time I try it shows “safari cannot download” pls help!

  • Hell yeah

    F*ck ! you didnt mention that iTunes will force system restore my iPhone 3GS. wtf you stupid arabic jerk.

  • Vlastimil Hybl

    from all these comments and my experience i think this apple stuff is shit unless u get an apple worker to come right to ur house!!!!!!!!!!!!!!!!!!!!!!

  • varun

    whats app messenger is asking for an upgrade on iphone ma712ll, but th app ugrade requires ios4.3 software version.. how can i acces whats app?

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