Why can t my Apple 4 be upgraded?

Before starting the upgrade, please back up, because after the official version of iOS 7 is released, the verification of iOS and iOS will be turned off (cannot be downgraded). There are two ways to back up:

1. Back up to the computer, that is, after connecting the device, select "Sync", then the backup will be made in the computer, and the data will be stored in the iTunes file package of the C drive.

2. Use iCloud to back up to the cloud database. Once you have connected your device with iTunes, check the device name, then go to "Summary", select "Backup to iCloud" among the backup options, and select Apps.

There are three ways to upgrade iOS 7:

1. OTA update.

In other words, as long as your device is in the list of iOS 7 upgrades, you can find "Settings" - General "- Software Update" on your device, select iOS 7, and then the device will be connected to the Internet** and installed. Wi-Fi is recommended, but it should be noted that the App Store** limit has been increased to 100MB on a data network.

2. Use iTunes to update your device.

Apple has released iTunes today, after the user**, in the "Summary" "Version", select "Check for updates", then it will enter the **iOS 7 firmware, and install it.

Connect the device to the latest version of iTunes with a data cable (the address is here), then manually ** iOS 7 firmware, then run iTunes, hold down shift, and click "Restore" at the same time, select the corresponding version of iOS 7 firmware for recovery.

Some channels do buy through the mobile phone itself can not be upgraded, to use the computer to upgrade, on the Apple official website,**iTunes,Step by step,Installation,After that, you can pass the 360**pp assistant,After you go into the pp assistant, you can naturally find the update of the mobile phone system,The mobile phone should be connected to the computer o

If the system version of Apple IV is too low to upgrade to the latest system version, you can try the following methods:

2.Clean up storage space: Before you upgrade your system, you need to make sure that your device has enough storage space to ** and install a new system. If your device is running out of storage space, you can try deleting some unnecessary files or applying a program to relieve the storage space.

3.Try to update with iTunes: If your device can't update your system via OTA (Over-the-Air Upgrade), you can try to connect to your computer with iTunes and then update the system in iTunes.

4.Update with Recovery Mode: If your device can't update your system via OTA or iTunes, you can try updating your system using Recovery Mode.

You need to connect your device to your computer first, then follow the prompts to enter recovery mode, and finally do a system update in iTunes.

It should be noted that the Apple IV is already a very old device and may not be able to install the latest version of the iOS system. In this case, it is advisable to use an earlier version of the iOS system, or consider replacing it with a new device.