Apple products are famous for their reliability, but when using iTunes, errors often occur. Probably everyone user apple Gadget at least once, but ran into it. Errors can occur due to a failure in the system or in hardware failures. Error 21 iTunes refers to hardware.
You decided to update the system system and encountered an error 21. How can it manifest? An error message appears and closes working window iTunes, after which it will be impossible to work in the program. After the error appears, the computer turned off. You have received a notice with the inscription "iTunes Error 21". The PC operating system works with a slowdown when submitting commands through the mouse or when printing on the keyboard. At times, the pc hangs for 3 to 4 seconds.
This failure can give alerts not only when working in iTunes itself, but also when using components with it connected. When the PC is completed or when it turns on, you can also leave the warning of failure 21. By tracking the appearance of the failure on time, you can easily eliminate the problem.
Causes of occurrence
There may be such a failure due to non-installing iTunes components or when these files are damaged. It may occur if the registry is damaged, which is responsible for iTunes the program. This may occur because of installation or removal by working with the program.
Damage to system files or malware or viruses has occurred. Removed (deliberately or randomly) files needed for the proper functioning of iTunes by another program. The most common cause of the error is to update the device with jailbreak.
How to eliminate Error 21
If you need to update the device with a jailbreak, use the recovery through dFU mode Using the REDSN0W program. RedSn0w. Allows you to restore any gadget from any condition. In order to troubleshoot, enter the device into the DFU mode using simultaneous pressing and holding the "Home" and "Power" buttons within 10 seconds. After that, stop pressing "POWER" by continuing to press "Home" before the appearance in the iTunes window of the emergency recovery of the gadget.
In this case, the device display must be without images. Wait for another message "The Idevice" IDEVICE "COULD NOT BE RESTORED ..." and recover IPSW.Other ways are aimed at eliminating the gadgets from the gadgets that have not been subjected to jailbreak.
ITunes update or installation
Check if there are updates for the program and update it to the last actual version. If it does not help, try to completely remove and re-install it. Keep in mind that when you delete not all components of the program can be removed. So remove it with special utility for complete removal. Only after that put iTunes again.
Turning off the antivirusman
Software for tracking viral activity can take a program actions as malicious activity and as a result of stopping its operation to the lock. In order to avoid such situations, you can turn off the antivirus at the time of working in iTunes or eliminate failures by means of turning off the antivirus after their appearances.
In the future, you can make iTunes into the list of exceptions. As a result, the antivirus will not block its activities. Make it you can in the settings. Provided that this function already has an activity to disable the network scan.
USB cord
Failures can be caused by using non-original components or those who have damage. Replace not original cable original. If you use a cable from the configuration, then check its integrity. Do not neglect such a trifle, the use of good components can extend the life of your devices and get rid of such failures.
Update OS.
To update windows system 10 Press the two "Win" and "I" keys. This combination will open the parameter window. Here you need to open the "Update and Security" section. You will open a work area where there is a "check availability checks" button. Click it. If updates are found, run them.
When using earlier windows version Open the Control Panel. Here click "Center windows updates"And spend check. If updates are found, install them.
DFU modes
This mode is designed for emergency recovery. It works at the hardware level to bypass the operating system. Turn off the device completely and after a couple of minutes, connect via USB cable to PC. Open the iTunes program. To enter the gadget in DFU mode, the "Power" button must be closed for three seconds and then clamp also the "Home" key. Keep them clamped for 10 seconds. After this time, stop pressing the "POWER" button, but hold the "Home" until alert appears in iTunes about finding the gadget in the emergency recovery mode. Click on the Restore button.
Removal of garbage
When operating a PC eventually, it accumulates a lot necessary information. It is capable of slowing the work of the OS and cause an error 21. This is due to conflicts between files or when strong load on the hDD. Remove garbage cannmgr utility. It is built into the system, but has a number of shortcomings. It is better to use WinSweeper for more complete cleaning.
To activate the process, click "Start". Then specify in the line to search "Command". Now hold down the SHIFT and CTRL keys. Click ENTER. In the Access dialog box, click "Yes." The flashing cursor indicates an open black box. Type "Cleanmgr. "And click ENTER. In the dialog box, lay out the ticks in the places where you want to clean. Pressing "OK" will launch the cleaning process.
You can also restore registry entries. But it's not worth doing it yourself if you are not a specialist in this matter. It is better to apply to a qualified person to a qualified person in this area, otherwise you can harm the PC and bring it out of order. If the described methods did not bring the result, go to the repair center for the diagnostics of the device. It is possible that hardware repair is required.
Happy iPhone owners are repeatedly associated with an update or recovery procedure purchased, by them official program from Apple - iTunes. However, when restoring at times, some serious troubles may occur, and one of them is an error 21 that occurs both on the iPhone 5S and on the iPhone 4S. This unknown error prevents the user to perform the procedure you need and eventually sees the information on the monitor screen - "Failed to restore the iPhone".
What is a mistake 21
This problem, in opinion, experienced professionals is related to interruptions of the hardware of their own gadget. To the emergence of this error could cause modem malfunctions, internal boards, and so on. With a slight impact or fall, the iPhone can be outwardly perfect, but unpleasant consequences could occur inside with some microcham, which in the future and led to the appearance of an error 21.
Error 21 iTunes - Methods Fix Problems
At least a mistake 21 and occurs exclusively in mechanical damage, there are actual methodsWhich time helps to cope with this problem at home.
List of useful recommendations from specialists:
- Install new PC or laptop drivers;
- Use last version iTunes;
- Make sure the cable is working;
- Restart the computer;
- If you have experience and the right skills try yourself to change the firmware on the iPhone;
- Finish the update procedure (recovery) on another personal computer.
If none of the above proposed manipulations helped in solving this problem, then it is definitely necessary to refer to professionals that are engaged in the repair of mobile technology. However, it is not necessary to think that you have to give a large amount for, there is a chance that the software elements are incompatible and the specialist will only pick it up new firmware.
Conclusion
Update and restore iPhone is an important procedure that enjoys a huge number of people around the world. And, if there are some errors during the process before contacting the help of specialists, some procedures can be carried out in person to save the money. But if during the process nothing happens, it is better not to heroge, because there is probability only worse.
Specially developed by Apple to work with devices on the iOS platform, provides the owners of "apples" synchronization of a device with a computer, convenient work with content and mass of others functionalityAmong which is the restoration of the firmware. The procedure performed using the ITYUNS differs in ease of implementation, but in the process of work there may be unexpected problems interrupting action. Using notifications with error codes, the program informs users about software failures Or hardware problems. Error 21 in iTunes may occur when updating or recovered iPhone firmware different versions. Messages about failure in the program appear for various reasons. Error 21 most often indicates mechanical damage Devices resulting from a modem malfunction, a device battery, internal boards and other components of elements, but can appear both as a result of software failures in the jailbreak process. Another reason is often a low battery charge or its output.
Error options 21 in iTunes.
Despite the fact that this failure is often provoked by micro-injuries afterwards to impact or fall, as well as other hardware faults, exist and software solutionsWith which the user can cope with the problem independently.
Method 1. Update iTunes
The universal method, which often allows you to get rid of most application failures when updating or restoring iPhone 4S and other "apples", in some cases eliminates and error 21. If the computer is not the latest version of iTunes, then after updating and restarting the PC, the problem can be resolved.
Method 2. Substitution of a USB cable
Sometimes the error 21 can be caused by damage to the cable or using a non-original cord. But even if the original equipment is used, it is necessary to examine it for the inflection, twists, oxidation and other small defects. The correctness of the interaction of the device with a computer depends on the integrity of the cable, so if any damage was found, it should be replaced with a good original cord.
Method 3. DFU Mode
Using the activation of the DFU alarm mode, it is often possible to get rid of many failures arising during the update and recovery process, including an error with code 21. For iPhone 4S and other versions, the procedure passes through a similar principle. Before entering the device to the DFU mode, it should be completely turned off, then connect to a computer using an original USB cable. Next, we carry out the following actions:
- click the "POWER" button and hold it for 3 seconds;
- not releasing the upper power button, also clamp also "home" and keep so for 10 seconds;
- after this time, we release only the "Power" button, while "HOME" continue to hold until iTunes define the device in DFU mode;
- after the manipulations conducted, the program will propose a single action - restoring the iPhone. Next, you need to follow the instructions on the monitor.
Method 4. Disable Anti-Virus
Some antivirus programs, firewalls and other protector systems can block iTunes processes, perceiving them as viral threats, as a result of which the error that appears interferes with the continuation of the procedure produced. You can pause the operation of the antivirus during the execution of the firmware restoration and after rebooting the application see if the error 21 is observed again. If the problem is solved, you need to make Aytyuns into the list of antivirus exceptions, as well as cancel network scanning.
Way 5. Windows update
In rare cases, it helps the update of the system components, for which it is necessary to proceed to the Windows Update and Safety parameters and search available updates. If they were discovered, it is worth installing.
Method 6. Full Charging Battery Device
When the source of the problem is the Akb of the "apple" device, the method of complete charging of the battery often helps. After the battery was charged to 100%, you can try to execute the update or recovery procedure.
Method 7. Restore registry files
Restoring registry entries often helps in the fight against iTunes errors if the files were damaged by viruses or accidentally removed by conflicting programs. Automatic correction will help you to execute the WinThruster tool from Microsoft. The program scans, then replaces the damaged files to "healthy". Manually adjust the registry can only be provided with special skills. An independent correction without certain knowledge can significantly disrupt the operation of the system.
Method 8. Hardware Solution
If none of the above methods led to the elimination of the error 21 in Aytyuns, most likely the problem lies in the internal damage to the device. To accurately determine hardware malfunctions will help diagnostics in the service. It may be necessary to replace the battery, the power controller or lower loop and it is better to trust the specialist.
It is not necessary to independently solder or change the elements without having the appropriate skills, because one incorrect action can only aggravate the situation and lead to irreparable consequences in the form of a final failure of the iPhone.
Sometimes when recovering, updating and sync iPhone, iPod Touch. And the iPad in iTunes arise unknown errors, and the necessary actions with the iOS-device fails. In our directory will find the decryption of errors and possible options Her elimination.
Errors arising during the recovery / update and synchronization process can be both software and hardware problems in iPhone, iPod Touch and iPad: Some eliminated enough simply (rebooting a computer or change of a USB port), others require hardware repairs.
ITunes errors occur when:
- , iPod touch and iPad with iTunes;
ITunes error classification
- Communication problems (network errors)
Errors iTunes.: 17, 1004, 1013, 1638, 3014, 3194, 3000, 3002, 3004, 3013, 3014, 3015, 3194, 3200.
Notifications may also appear:- "An error occurred when booting software."
- "The device is not supported for the requested assembly."
Error and warning data appear when there are problems with connecting the computer to the Apple update server or to the device.
- Safety settings problems (firewall, antivirus, firewall)
ITunes errors: 2, 4, 6, 9, 1000, 1611, 9006, 9807, 9844.
These errors are caused by blocking connection to Apple antivirus servers, Windows Firewall or Firewall. - USB-connected malfunctions
ITunes errors: 13, 14, 1600, 1601, 1602, 1603, 1604, 1611, 1643-1650, 2000, 2001, 2002, 2005, 2000, 2009, 4005, 4013, 4014, 4016, "invalid response", Removable Request for recovery after Its completion. - Hardware problems
ITunes errors: (-1), 1, 3, 11, 12, 13, 14, 16, 20, 21, 23, 26, 27, 28, 29, 53, 56, 37, 1004 , 1011, 1012, 1014, 1667 or 1669.
There are hardware faults with iPhone, iPad and iPod Touch: with a modem, with a Wi-Fi module, a power connector, battery and so on.
Standard ways to eliminate errors in iTunes
Most of the errors in iTunes can be eliminated independently:
- Delete or complete the programs on your computer that can block iTunes connecting to Apple Update Server.
- Disconnect the security for the recovery time or update iPhone and iPad.
- Use the original uSB cable To connect iOS devices to a computer. Otherwise it is possible. Try to replace it.
- . On the stationary computer You should use USB ports located on motherboard. TO uSB ports On the multimedia keypad, USB hub or on the front panel system Block Connect the iPhone or iPad is not recommended - errors can occur with the connection of the device.
- Fully remove iTunes and all its components using "Aninstallers", Uninstall Tool (for Windows), for example. Then set the latest version of the program.
- Restore / update the iPhone / iPad on the other windows Computer or Mac.
The table describes all known iTunes error codes when recovering, updating, synchronizing and loading content from iTunes Store. And possible options for eliminating them are given.
ITunes Error Handbook and Remedy Methods
| Error number | Most likely reason | Recommended solution |
|---|---|---|
| Error number | Most likely reason | Recommended solution |
| 1 | The firmware is not supported by the device or iTunes version outdated | Make sure you use the firmware for your device model and |
| 2 | The firmware is recognized, but collected and packed incorrectly and therefore cannot be used. It occurs when working with custom firmware with a hacctivation and anlokom in which a bad ASR Patch is used (the problem is relevant for Sn0WBreeZe versions below 1.7) | Use another firmware |
| 3 | The problem in the work of the modem part of the device | |
| 4 | iTunes cannot connect to Apple service servers | maybe third-party programs Block the ports of the computer and prevent iTunes connections with Apple servers. Check the settings in the Hosts file in / Windows / System32 / Drivers / etc / For the presence of entries of the type "XX.Hxx.Hxxxxxx gs.apple.com". If the string is present, in front of it, install the sign # and save the changes. Try again |
| 5, 6 | It is impossible to install the firmware due to damage to the download logos, or due to the fact that the device is not included in that service mode (for example, if the firmware is designed for DFU MODE, and you try to recover through Recovery Mode.) | if it did not help - create your own firmware or download another |
| 8 | The firmware is not supported by the device (for example, you loaded the firmware not for that generation of device) | Load the firmware supported by your device model. |
| 9 | Panic kernel in iOS-device when working with firmware. Usually occurs when the USB cable data transfer is cut, or when the firmware is incompatibilities with the selected recovery mode | Restore the firmware through the firmware update mode (DFU MODE). Check the mechanical connection of the device with a computer. Connect the cable to another port or replace the USB cable |
| 10 | It is incorrectly collected by a custom firmware because of what was damaged or there is no low-level LLB loader | |
| 11 | In the IPSW firmware file, a number of required files are not found. | Create custom firmware yourself, or download another custom firmware |
| 13 | Problem with USB cable or 30-pin (Lightning) connector, or an attempt to install a beta version of iOS from the Windows environment | Replace standard cable or change uSB port. IN BIOS Computer Disable uSB support 2.0 |
| 14 | In the process of flashing, a violation of the integrity of the firmware IPSW file was detected | Disable antivirus programs, disconnect the firewall, change the USB cable or connect the iOS device to another port of the computer, download another firmware |
| 17 | Update with one custom firmware to another custom firmware | To upgrade to custom firmware, use the recovery () or firmware update mode (DFU MODE) |
| 18 | IOS-Device Media Behable Damaged | In most cases, only flashing will help |
| 19 | "ITunes failed to synchronize in the iPhone" [ name iPhone] "Due to the occurrence of an unknown error (-19)." Error occurs after updating iPhone 3G, iPhone 4 to more late version iOS during reserve copy In the process of synchronizing the iPhone with iTunes. | Uncheck the "Synchronize automatically connected if the iPhone is connected" on the Overview tab in the "Devices -\u003e Model of the connected apparatus" in iTunes, remove and connect the iPhone. Then synchronize again. If the error is repeated, you must restore the device to the new firmware before you create backup In ICloud, to not lose user data after recovery. |
| 20 | The device is enabled in Recovery Mode instead of DFU MODE | Turn on the device in DFU MODE |
| 21 | In the process of the jailbreak, a DFU-mode error occurred. In the error 21 arises due to hardware problems (dead battery, low charge). |
To enable the device in DFU MODE, use the Pwnage Tool, Sn0Wbreeze or RedSn0W utilities. If the above measures do not help, you should fully charge the battery, if it does not help, the device's battery must be replaced. |
| 23 | It is impossible to consider IMEI or the MAC address of the device (at least this cannot do iTunes) | If the problem is repeated on other versions of the firmware, most likely there is a hardware problem |
| 26 | Custom firmware is incorrectly collected and as a result, an error occurred when contacting NOR-memory | Create custom firmware yourself, or download another custom firmware |
| 27, sometimes 29 | Cyclic error in iTunes versions from 8.0 to 9.1 | Update iTunes up to 10 or later |
| 28 | Mechanical damage to the lower loop or docking connector in the device | Contact authorized service center |
| 29 | Hardware problem with battery, lower loop or power controller | Contact an authorized service center for battery replacement, loop or power controller |
| 31 | Unable to display a device from the DFU mode. Most often arises due to hardware problems | Contact authorized service center |
| 34 | Insufficient hard disk space for installation | Release the disk space in which iTunes installed |
| 35 | Incorrect access rights to the iTunes folder in Mac OS X | Run the disk utility and restore access rights. (In terminal.app, enter the command: Sudo Chmod -R 700 / Users // Music / iTunes / iTunes Media, where - username) |
| 37 | Low-level loader (LLB) in the firmware does not match the device model | Create custom firmware yourself, or download another custom firmware |
| 39, 40, 306, 10054 | No access to activation and signing servers | Disable windows Firewall and antivirus programs. |
| 54 | Program failure when transferring data from the device. In most cases, it occurs on unauthorized computers or when transferring hacked applications | Remove the "old" backup copies. Devutorize the computer in the iTunes Store (Menu "Shop" in iTunes) and try again |
| 414 | Restriction by age on downloadable content | In your change year of birth (in iTunes in the "Shop -\u003e" menu, view my account) |
| 1002 | Unknown error when copying firmware files to device | Repeat the flashing procedure |
| 1004 | Temporary problems on Apple servers (not received from the SHSH HECHER server for the device) | Repeat the flashing procedure later |
| 1008 | Apple ID contains invalid characters | Change your Apple ID without using forbidden characters. Try not to use in Apple ID anything other than Latin letters and numbers |
| 1011, 1012 | Hardware problem with modem part of the iPhone or iPad | Try. If the error is repeated, contact the service center. |
| 1013-1015 | ITunes attempt to lower the modem version in iPhone / iPad | The flashing has passed successfully, but the iPhone / iPad will independently boot on iOS with a reduced modem firmware cannot. In the Tinyumbrella utility, use the Kick Device Out of Recovery feature (output the device from the recovery mode) |
| 1050 | Servers activation Apple. Temporarily unavailable | Try to activate the device later. |
| 1140 | Problem with synchronization of photos from iPhoto on Mac OS X | Delete the iPod Photo Cache folder (in the context menu of the iPhoto mediatek file, select "Show Package Content" and delete the folder |
| 1394 | Damage to system files in the device as a result of unsuccessful jailbreak | Restore the device and repeat the jailbreak procedure. |
| 1413-1428 | Error transmitting data via USB cable | Check the USB connection of the device with a computer, cable integrity and a good USB port state. Change port |
| 1430, 1432 | The device is not recognized | May indicate a hardware problem. Replace the USB cable, connect the device to another USB port, plug the device to another computer. |
| 1450 | It is impossible to make changes to the iTunes media library | Mac OS X Restore access rights, in Windows Check the owner and access rights to the library iTunes |
| 1600, 1611 | Recovery to custom firmware is carried out in DFU MODE, although it must be executed from Recovery Mode | Enter the device in Recovery Mode and try again. |
| 1601 | iTunes can not get full access to the device | Disconnect everything background processes, change the USB port or USB cable, reinstall iTunes |
| 1602 | iTunes failed to define the device at the time of preparation for updating | Check the HOSTS file for entries of the type "xx. Xxx.xxxxx gs.apple.com" if they are available, complate them (insert the "#" symbol before the string). Disable all background processes, change the USB port or USB cable |
| 1603, 1604 | Attempt to restore the device without jailbreak on custom firmware | Perform on current firmware. Please note: Jailbreak with Spirit and the Jailbreakme website is not full and also leads to similar errors. |
| 1608 | ITunes components are damaged | Reinstall iTunes. |
| 1609 | ITunes version to work with your device is very outdated | Update iTunes to the latest version |
| 1619 | iTunes cannot with the device in DFU mode, in normal mode successfully recognizes it | Update iTunes to the latest version |
| 1644 | Foreign programs are addressed to the firmware file | Close all programs running in the background, turn off the firewall and antivirus, restart the computer |
| 1646 | iTunes could not recognize the device in active mode | Restart iOS-device, restart iTunes |
| 2001 | Problem with Mac OS X Drivers | Update Mac OS X to the latest version |
| 2002 | ITunes access to the device is locked by other system processes. | Close running programs, disconnect the antivirus, restart the computer |
| 2003 | Problem in the USB port | Connect the device to another USB port or other computer. |
| 2005 | Damaged USB cable | Replace cable |
| 3000, 3004, 3999 | No access to firmware signature server | Access blocked third-party application, turn off the firewall and antivirus |
| 3001, 5103, -42210 | iTunes can not download video due to hashing errors | Update iTunes, find and delete system folder "SC info" ( Windows 7.: ~ \\ Documents and Settings \\ All Users \\ Application Data \\ Apple Computer \\ iTunes; Mac OS X.: ~ / Users / Shared / SC info) |
| 3002, | It is impossible to request a suitable hash SHSH from the firmware signing server. An error occurs if the HOSTS file is configured to forward iTunes to the CYDIA server manually or using Tinyumbrella, but there are no stored haze on the server for this firmware. | Close Tinyumbrella and remove (Commitment) from hosts file Row of the species "XX.Hxx.Hh.hkhh gs.apple.com" |
| 3014 | For too long does not come response from Apple Activation Server | Restart the computer, forcibly update the Internet connection. If the error occurs already during the recovery process (the status bar is filled on the device under the logo), download and install Hotspot Shield. Run the program and try again. |
| 3123 | iTunes can not take a video for rent | Devutorize computer in iTunes and log in again |
| 3191 | The components of QuickTime are damaged | Reinstall QuickTime and its components |
| 3195 | Digital SHSH certificate is damaged | Repeat the device restore via iTunes |
| 3200 | In the custom firmware there are no necessary images | Create custom firmware yourself, or download another custom firmware |
| 4000 | Conflict with other USB devices connected | Try to disconnect all USB cables from the computer, with the exception of the keyboard, mouse and iOS-device |
| 4005, 4013 | Critical error when updating / restoring | Try to restore the device in DFU mode, while preferably use another USB cable |
| 4014 | Violated the connection of the device with iTunes during recovery or update. iTunes can not send iOS-device to recovery mode | Perform recovery / update on another computer and / or with another USB cable. |
| 5002 | ITunes Store error: it is impossible to make a payment | Check your credit card information |
| 8003, 8008, -50, -5000, -42023 | Unable to restore the file download from App Store. or iTunes Store. | Clean the contents of the iTunes Media / Downloads folder ( Windows 7.: ~ \\ Users \\ user_name \\ Music \\ iTunes \\ iTunes Media \\ Downloads) |
| 8248 | iTunes-plugins are incompatible with new version Violate the operation of the program | Remove installed iTunes-plugins. Often, the problem is related to the Memonitor.exe process, complete it |
| 9006 | Problem when downloading firmware in iTunes | Disconnect the firewall and antivirus, download iOS manually |
| 9807 | No iTunes communication with digital signature verification server | Disconnect the firewall and antivirus |
| 9813 | Certificates of key bundles in Mac OS X are damaged or invalid | Clean Safari cache (Menu "Safari -\u003e Reset Safari") |
| 11222 | The limit of expectations for connecting to iTunes services has been exceeded | Disconnect the firewall and antivirus, update iTunes, re-enter your Apple ID in iTunes Store |
| 13001 | Irreversible damage to the iTunes media library system file | Reinstall iTunes or delete the iTunes Library file in the iTunes folder and files with extension.ITDB |
| 13014, 13136 | In the system, processes preventing the normal operation of iTunes | Close backgrounds, turn off the firewall and antivirus, restart the computer |
| 13019 | Error ITunes mediatek when trying to sync | Check the iTunes media for damaged or incompatible files. |
| 20000 | Conflict iTunes with a graphic shell of Windows | In Windows, enable the standard design theme. |
| 20008 | Conflict iTunes with Tinyumbrella utility | Update Tinyumbrella to the latest version and restart the computer |
| -1 | Critical error modem | It occurs when updating the iPhone without increasing the version of the modem firmware. Use or to display an iPhone from Recovery Mode. If utilities do not help, the problem is hardware and the iOS device requires repair in an authorized service center. |
| -35, -39 | It is impossible to download music from iTunes Store | Upgrade iTunes to the latest version, re-enter your Apple ID in iTunes Store, turn off the firewall and antivirus |
| -50 | No iTunes communication with Apple servers | Update iTunes to the latest version, re-enter your Apple ID in iTunes Store, disconnect the firewall and antivirus, reinstall iTunes and QuickTime |
| -3198 | Violated the integrity of the downloaded files | Repeat content download via iTunes |
| -3221 | Invalid access rights to the iTunes program in Mac OS X | Run the disk utility and restore the access rights |
| -3259 | The limit of the iTunes Store connection time is exceeded | Check the Internet connection |
| -9800, -9808, -9812, -9814, -9815 | Shopping time error in iTunes Store | Install the correct date and time on the computer. |
| -9843 | Download from iTunes Store is blocked by the security system | In iTunes leave your account, restart iTunes and log in again in the iTunes Store under your Apple ID |
| 0xe8000001, 0xE800006B. | The device was unexpectedly disabled. | Disconnect the device from the computer, restart iTunes and connect the device again |
| 0xe8000013. | IOS-Device Synchronization Error with iTunes | Repeat synchronization |
| 0xe8000022. | Damaged (irreversible) iOS system files | Restore the device |
| 0xe800003d. | Invalid access rights to operator settings cellular communication CARRIER BUNDLES) | If the iOS-device jailbroken, correct the access rights to the cellular operators settings (on iPhone / iPod Touch / iPad: / System / Library / Carrier Bundles), delete all custom bundles (Carrier Bundles) operators, restore the device |
| 0xe8000065 | Error flashing the device Custom IOS assembly. Usually, this error occurs when working with firmware collected in Sn0wbreeze | Restart the computer, try again, in case of failure, create a firmware again |
| 0xe8008001. | Attempting to install unsigned (hacked) application. Occurs when installing applications on a jailbreak | Install Appsync from Cydia for your version of iOS |
| 0xe8000004 (iPhone 4) | The error occurs most often when activation iPhone 4. | It is solved with the help of a tied downgrade on the GeekGrade_IPSW firmware, followed by boot_ipsw in RedSn0W. The whole procedure is described in |
It can happen to you that you are trying to restore your iPhone, but no matter what you do, the iPhone will not restore, because iTunes error 21 or iPhone Error 21 continues to pop up! It's like a Vzhik-a-mol, you continue to try to restore, but this is a hellish iPhone error 21 comes again. As a rule, these errors are the result of some security software package interfering with your recovery, and this is usually easy to fix.
So here we will show you 8 different waysWith the help of which you can fix the errors of iTunes 21 or iPhone Error 21, restore with ease, and continue to use the device!
What is iTunes Error 21 (iPhone Error 21)?
Now, before we get to the smallest years, how to fix iTunes mistakes 21, I am sure that you should be won by Dering that iTunes Error 21 (iPhone Error 21) to start with and why he has this strange Obsession your phone! The most common cause iTunes. Errors 21 is that your iTunes is trying to download recovery files (.IPSW), but, unfortunately, is blocked from authentication. This can be associated with a hardware error, or, possibly, has occurred communication between the device and the server. However, do not worry, we will show you how to fix this error iphone 21 is easy and effortful and return to the lead your iPhone absorbed life!
Solution 1: how to fix iTunes 21 or iPhone error 21 without loss of data
One of the biggest problems you are probably when trying to restore yours and try to correct the errors of the iPhone 21, whether it is safe your data. This is a legitimate concern how many methods may or definitely lead to data loss. That is why we begin our list with a technique that can provide any loss of data. To ensure this you can use very easy to use and convenient software called Dr.Fone - iOS system restoration.
Your memories and data are all precious and you should not risk them. Dr.Fone seems to pay great attention to the preservation of data and how such is the recommended tool to correct the iPhone error 21. In addition, its convenience and military universal character also helps.
Steps to correct the error iTunes 21 with Dr.Fone
Step 1. Select "IOS Restore System"
After running Dr.Fone tools, you will find "iOS Restore System. Click on it.
Step 2. Connect the iPhone
Connect your iPhone through the cable, and let Dr.Fone detect it. Click the Start button to continue the process.
Important: Please note that when fixing the question - iPhone is stuck on the Apple logo, operating system IOS on your iPhone will be updated to the latest version. And if the device is a broken iphone, then it will be converted back to a single prison broken state.
Step 3. Load the firmware
dr.Fone will determine the iPhone model and offer the latest IOS version for download. Just click on the "Download" link and wait for the completion of the process.
Step 4. Fix iTunes Error 21
After the download is completed, Dr.Fone will automatically start repair iOS, besides this time you will not be bored with an error 21 iPhone message!
Solution 2: ITunes Restart Fix iTunes Error 21
Now it's just a nominal measure that you can see, related, how sometimes turning off, switching to the computer corrects some problems. If there is a real problem, this method will be helpless in front of it, but if the iPhone 21 error is a temporary failure, it should take care of it. You remember how I said that ITunes 21 error is the result of iTunes blocked. Well, sometimes just restarting iTunes, and then start the recovery process again it may be enough to correct iTunes error 21. Thus, you might want to "bring it.
Solution 3: Fix iTunes Error 21 Update iTunes
Updates to all Apple products may be needed because they help correct errors and a shelf. So if you kept on update iPhoneBecause you have a slow network, or because your phone is hacked or any reasons you could have, now it's time to update it. Get the latest version of iTunes, and you may be able to fix iTunes error 21.
How to fix the error iTunes 21
- Open "iTunes".
- Go to the menu\u003e Help.
- Select "Check availability of updates".
Solution 4: Turn off Anti-Virus to fix iPhone 21 error
Many times the proper functioning of some vital programs may be difficult due to the anti-virus, as they may be damaged or being threats. In this case, turning off the antivirus helps access these programs independently and, it is possible to update the device.
Solution 5: Remove USB unnecessary devices
You can try to correct iPhone 21 errors, removing all unnecessary external devices from a computer, as they can have programs that become on the way of proper recovery and bring-ki to iPhone ERROR 21.
Solution 6: Check the sensor cable
This method sounds like complex or risky. However, this is not the case, not if you do not do it exactly as it should be done. This is a variety, "how to discharge a bomb, cut the wrong wire and the device goes boom! Well, not literally, but you will get a picture. However, if you do it right, you can be able to fix the iPhone Error 21. All you need to do is open the device, confiscate the screw that connects the battery. Disconnect the device cable and put it back together. This can help, although it seems that quite extreme and risky measure, especially considering that you have a much more guaranteed and acceptable option in Dr.Fone from.
Solution 7: How to fix iTunes 21 errors through recovery mode
This method includes you trying to correct the iPhone ERROR 21 through the DFU mode. DFU is worthwhile to update the built-in device software and provides full recovery of the iPhone. Although it guarantees fixing iPhone Error 21, it does not guarantee that all your data will be safe. Thus, only use this method if you have exhausted all other options. That's how you can do it.
Fix iTunes errors 21 or iphone Error 21 through recovery mode
Step 1. Place the device into DFU mode.
Step 2. Connect to iTunes.
Connect your iPhone to computer and access iTunes.
Step 3. Recovery iTunes.
- Open "Summary" tab in iTunes, and then click "Restore".
- After recovery, the device will restart.
- When it was asked to "Slide to install," just follow the settings.
This solution is most likely to correct the iPhone Error 21, however, as I said earlier, he restores his phone to the factory settings, without giving you the ability to back up. This will lead to a significant loss of data, in contrast to the alternative to Dr.Fone.
Decision 8: Verification is modified or outdated software
ITunes 21 error can be caused due to outdated or corrupt software. You can use old version of iTunes. In this case, you must contact and update it. Perhaps you are trying to install more old version IOS, in this case you must find the latest version and establish that.
Output
In the prevention of various methods with which you can fix the iPhone Error 21, we do not discrimi-nat between various methods. We believe that you must have the maximum solution strength, so we have listed them all, together with their advantages, minuses, as well as risks. For example, some of the methods that are significantly risky and can lead to a serious data loss, some of them may even destroy your iPhone, if not processed well, and most of them do not give any guarantees of success. Therefore, my personal recommendation to go with Dr.Fone as it is a guarantee against all risks, I just mentioned. But, hey, choose in your hands! We just hope that you make the right challenge, and then make a common downstairs to know which method works better for you!
