The reason is that you synchronized the database incorrectly.

The solution is as follows:

In some special circumstances, iTunes may not be able to connect to the iPhone normally, and the following prompt will appear:

“iTunes cannot read To retrieve the contents of your iPhone, go to the Summary tab of iPhone preferences and click "Restore" to restore this iPhone to factory settings." prompt, click OK and you will see that the iPhone can only perform restore operations.

If this prompt appears and the operations on your iPhone except for iPod, iTunes, and App Store are normal, then one reason for this situation is that the iTunes synchronization database on your iPhone is damaged. The solution is given here.

Before performing any of the following operations, please restart your iPhone, close iTunes on your computer, and open iFunbox to connect to your iPhone.

1. The first step is to back up the multimedia files on your iPhone. If you do not need to keep the multimedia files on your iPhone, please jump directly to the second step.

2. Back up the contacts and text messages on your iPhone (optional)

Although I am sure that the contacts and text messages on your iPhone will not be deleted in the next operation. SMS message, but just in case, make a backup.

Contact data is at: //var/mobile/Library/AddressBook

SMS data is at: //var/mobile/Library/SMS

Use The "File Management" function of iFunbox can back up all the files in these two directories. If you are sure that your contacts and text messages have been backed up, you can jump directly to the third step.

3. Use the file management function of iFunbox to delete the folder "iTunes_Control" located in the /var/mobile/Media directory.

4. After deleting the iTunes_Control directory, reopen iTunes , iTunes will scan the iPhone, this process will take a few seconds, please wait.

When the iPhone is scanned, since the iTunes_Control on the iPhone has been deleted, that is, there is no synchronization information between the iPhone and iTunes, iTunes will recognize the iPhone as the first time it is connected to the computer, and it will ask You set up iPhone

Set as a new iPhone: If you choose to set as a new iPhone, iTunes will recognize your iPhone as a brand new iPhone and re-initialize the synchronized data;

< p>5. After synchronization is completed, the import function of the original iTools (iFunbox) and other software can be used, without affecting the software installed on your original iPhone and the jailbreak status.