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Join Date: Apr 2010
re: List of iTunes Errors and Solutions
- Unknown Error -48
- Update with iTunes 7.5 or later. You can also perform an update in iTunes: - Mac: Choose iTunes> Check for updates. - Windows: Choose Help> Check for updates.
- If you encounter this problem when updating an iPhone on a Mac, follow the instructions below: - Go to ~ / Library / iTunes / iPhone Software Updates. In the Finder, you can choose Go> Go to Folder. Type or paste the path name above and click OK. - Delete all files in the iPhone Software Updates. - Try to restore the iPhone again.
- Unknown Error -19
- Problem when synchronizing.
- Solution: Disable automatic syncing visible when iPhone is connected or in Preferences> Devices, select the option "Disable automatic syncing ..."
- Clear your backups from iTunes, in Preferences> Devices Click select the last backup of YOUR iPhone, then "Delete Backup". (Warning, irreversible action - Make a backup backup on another computer).
- Unknown Error -18
- Put the iPhone into recovery mode and restore it.
- Unknown error -4
- Problem with iTunes and the rights to your PC or Apple servers
- Solution: Connect to iTunes using a session with administrator rights
- Wait and connect with other Internet access, iTunes can connect to servers in the AppStore.
- Error 1 Unknown
- iPhone not recognized in recovery mode / DFU (Dowgrade impossible if you are not in DFU):
- Manually put your iPhone in "recovery mode": press Home and Power for 10 seconds After 10 seconds release the power button and let Press the Home button until you see the message "iTunes has detected an iPhone in recovery mode "
- Turn your iPhone into DFU manually: Hold Home + Power button simultaneously to re-startup of your iPhone (10sec). Only then release the power button until you see the message "iTunes has detected an iPhone in recovery mode" (25sec).
- The firmware is downloaded selects or incoherent with the version of your device, or the file is corrupted.
- Solution télélcharger re-match the firmware version of your iPhone - Phone1, 1_xxx.ipsw for V1 (Edge) - Phone1, 2_ xxx.ipsw for V2 (called 3G) - Phone2, 1_ xxx.ipsw for V3 ( Called 3GS)
- Unknown Error 2
- Apple server problem.
- Solution: Your iTunes user account must only contain characters such as (other symbols are banned from your main contact email or name of your iTunes account):
- Error 5 Unknown
- Your firmware is corrupted or improperly downloaded (Wrong version), re-download your firmware.
- Unknown Error 6
- USB Problem: The connection falls unmanque power.
- Solution: Reboot and Change USB port (do not use a hub), or change your PC.
- This error can often be corrected by following the steps described in the article iTunes for Windows: Troubleshooting problems with security software . Third-party software installed can you change your default packet size in Windows by inserting an entry in your registry TcpWindowSize. This error may be due to a default packet size that is not properly defined. Contact the manufacturer of the software that generated the change in the size of the package to get help.
- Error 9 Unknown
- Disconnection Problem
- The error 9 means that the iphone was unplugged when handling, it is advised to change usb cable, usb port. (Do not use the Hub)
- If problem remains unsolved despite your attempts to Restore in Recovery Mode and DFU, contact service Apple.
- This error occurs when the device has been inadvertently disconnected from the USB bus and the communication stopped. This can occur if the device is disconnected manually during the restoration process. You can solve it by making a USB troubleshooting isolation, using a different USB cable dock connector, trying other USB ports, performing the restore on another computer or removing conflicts caused by third-party security software.
- Error 19 Unknown
- You try to restore but you encounter an error during the process.
- Disable Automatic Synchronization
- In iTunes when your iPhone is connected, uncheck "Auto Sync". (Or In iTunes> Preferences)
- And restore again.
- Error 20 Unknown
- Restore error.
- Your firmware is too old or too new compared to your version of iTunes.
- Download a new version of iTunes (More or less old) .
- Then restore
- Error 21 Unknown
On Windows, these files are located in a hidden folder. To view these files in Windows Explorer, you must select Tools> Folder Options, click View, then select "Show hidden files and folders.
- Mac, Go to ~ / Library / iTunes /. In the Finder, you can choose Go> Go to Folder. Type or paste the path name above and click OK. - Delete all files in the iPhone Software Updates and Device Support. - Try to restore the iPhone again.
- In Windows Vista, follow the instructions below: - Go to Start> Computer> Local Disk and type the following path: C: / users / [yourusername] / AppData / Roaming / Apple Computer / iTunes / - Delete all files in the iPhone Software Updates folder and Device Support. - Try to restore the iPhone again.
- In Windows XP, follow the instructions below: - Choose Start> Run, then type C: / documents and settings / [yourusername] / Application Data / Apple Computer / iTunes / - Delete all files in the iPhone Software Updates and in Device Support.
- If, despite these recommendations, you still have this error, make sure you have the latest version of iTunes.
- Try using a USB hub.
- Unknown error 28
- Problem restoring your device (Problem Irreversible)
- Solution: None.
- Contact Customer Service for Apple iPhone replacement (if it is still under warranty)
- These errors may indicate a hardware problem of your device. Follow the procedures described in this article and also try to perform a restore by connecting to a computer and a network that you know, to isolate the problem to the device.
- If the IMEI number or the MAC address is not specified or corresponds to a default value, it can also confirm that the problem is of a material.