- Part 1. Prep Work for Upgrading to iOS 8
- Part 2. How to upgrade to iOS 8 via iTunes (Recommended)
- Part 3. How to update to iOS 8 over the air (on the iOS device directly)
Prep Work:
1. Check device compatibility. Don't get excited just yet! The first thing you need to do is to ensure whether your iOS device is able to run on iOS 8 or not. Apple has listed out the iOS devices that are fully compatible with iOS 8. If your device is on this list, then you can upgrade it to iOS 8. Ok, if your iPhone, iPad or iPod touch is on the list (check the screenshot below), then you should do the following prep work.
2. Ensure your iOS device has enough storage for iOS 8 update. There are 2 ways to install iOS 8 on your iPhone, iPad and iPod touch: through iTunes and on your iOS device directly. You can choose either way you'd like. However, if you try to upgrade to iOS 8 on your device, make ensure that there is 6GB storage on your device, because Apple requires it to be. The exact storage requirement is different for different models of iPhone, iPad and iPod touch. If you don't have that much storage on your iOS device or you're not planning to delete items on your device to free up enough space, the only option to do iOS 8 update is to upgrade via iTunes.
Besides the above mentioned prep work, to make sure the security of your data and enhance the enjoyment of iOS 8, you'd better take a glimpse of the article 5 things you must do before upgrading to iOS 8.
Part 2. How to upgrade to iOS 8 via iTunes (Recommended)
Why upgrading to iOS 8 through iTunes is recommended?
- Less storage is required for iOS device. Upgrading to iOS 8 over the air requires you at least 4.6GB storage available on the iOS device, which means you have to prepare 6GB for a successful update. while if you do the iOS update through iTunes, it only requires you 2GB storage on your iOS device.
- Less time is needed. Upgrading to iOS 8 through iTunes is faster than do it on an iOS device directly. A person at discussions.apple.com has complained that it required him more than 30 hours to download the installation package on his iPhone while it only cost him less than half an hour doing the iOS 8 update on his computer.
- The network is more stable. The network for a computer is more stable than the WiFi on an iOS device. During the updating process, some people said that the WiFi disconnection always resulted the update failures.
- Jailbroken iOS device must be upgrade to iOS 8 via iTunes. Otherwise, the update will fail and users will get an iOS device that is with dead black screen or with Apple logo stuck on the device.
- iOS devices running in iOS 6 or former versions must upgrade to iOS 8 via iTunes. Or the update will fail too.
There are 3 options in total to upgrade to iOS 8 via iTunes. Each way has its advantages. Choose the right way that's right for you!
Option 1: the simplest way to do iOS 8 update via iTunes:
Step 1. Update your iTunes to the latest version. Connect your iPhone, iPad or iPod touch with your computer and launch iTunes. Please make sure your computer is connected with a stable network.
Step 2. On iTunes, click your iOS device. In the pop window, you can see information for your iOS device. And there is a line telling you that version iOS 8.0.0 is available for your iOS device. Just click 'Update', then you'll upgrade your device to iOS 8.
- Advantages: It's very easy to operate. No need to download any firmware or do any extra work.
- Disadvantages: You have to wait for a long time for iTunes to download the installation package. During the install process, you might lose your data
Option 2: hold down Shift Key and click 'Update' on iTunes
Step 1. Download firmware for your iOS device according to your iOS device model. Save it on your computer.
Step 2. Download and install the latest iTunes on your computer. Connect your iPhone, iPad or iPod touch with your computer and run iTunes.
Step 3. On iTunes, click your iOS device. Hold down Shift key (Option key on Mac) on the keyboard and click the 'Update' button on your computer. In the pop-up window, find the firmare you've saved on your computer and choose it. Click 'Open' and let iTunes do the rest iOS 8 update for you.
- Advantages: It's pretty fast to upgrade your device to iOS 8 with this way.
- Disadvantages: You have to download the right firmware first. And if the network is not stable enough, during the update process, you might lose data on your iOS device.
Option 3: hold down Shift Key and click 'Restore' on iTunes
Step 1. Download iOS 8 firmware for your iOS device according to your iOS device model. Save it on your computer.
Step 2. Make sure your iTunes is the latest version. If not, update it. Connect your iPhone, iPad or iPod touch with your computer and launch iTunes. On iTunes, click your iOS device. In the pop window, you can see information for your iOS device. In the Backup area, choose 'This Computer' and click 'Back Up Now'. By doing this, you've successfully backup your iOS data to your computer. You know, this way will first erase all data on your device and then restore data to your device from the backup file you've created after iOS 8 update successfully.
Step 3. Hold down Shift key (Option key on Mac) on your keyboard and click 'Restore iPhone (iPad or iPod)' 'in the same window on iTunes. In the new pop-up window, choose the firmware you've downloaded to your computer in the step 1 and open it. Let iTunes do the iOS 8 update for you.
Step 4. After upgrading to iOS 8 successfully, you'll find that all data on your device is gone. To get the data back, click 'Restore Backup'. In the new pop-up, choose the backup you've created in step 2 and restore the data to your iOS device. That's it!
- Advantages: It's the safest way to upgrade to iOS 8. Using this way will never get your data lost.
- Disadvantages: You have to go through a long process of upgradint to iOS 8: download firmware > backup data > update to iOS 8 > restore data.
Part 3. How to update to iOS 8 over the air (on the iOS device directly)
To ensure the success of upgrading to iOS 8 on your iOS device, please make sure you can meet the requirements:
- Have 6GB storage available on your iOS device. Doing the iOS 8 update directly on your device requires large space. If you don't have so much storage, you should either try to upgrade to iOS 8 via iTunes or try the methods to free up space.
- Have a stable network. If your WiFi is not stable, then it's very likely you'll fail to do the iOS 8 update;
- Have full battery or connect device to power source. It takes a long time to do the update on an iOS device. If you don't have enough power, then you'll fail to do the update;
- Make sure your iOS device is not jailbroken. Or fore sure, you can't upgrade your device to iOS 8;
Here is how to upgrade to iOS 8 on an iOS device directly: Tap Settings app on your iOS device > General > Software Update. Click Download and Install button for iOS 8. After then, you need to tap to agree to Apple's terms and conditions. When the iOS 8 installation package is downloaded successfully, you can see the button 'Install Now'. Tap it and wait for your device to restart. Later, tap through the setup screen on your device. That's it!
Source http://www.wondershare.com
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