Error 1606 how can i fix my iphone i try many solutions uninstall itunes connect to toher USBs 2.0 other pc create new user on Windows OS. in vista and xp well **** any one pls help me.... i make this but the text is in spanish: Pues funcionaba ala perefccion dejen les cuento que al tratar de modificar unos registros de la app iSim pude “creackearla” inmediatamente se pusó el icono de itunes con el cable asi que me di ala tarea de desbloquearlo o restaurarlo y realmente pude restaurarlo con iLiberty le puse normal mode y pude volver ala normalidad. Solo intente bajar Snapture y ahi fue cuando me pidio reiniciar y se trabo mi iphone ya llevo 2 semanas asi leyendo en los foros y recurriendo a ayuda de foreros como ustedes. Hasta el momento… me da errores 1603, 1604 y al final de cuentas no se ah podido restaurar… Mi Iphone en coma tiene las siguientes caracteristicas: Firmware: 1.1.4 Responde a Itunes al momento de conectarlo. Përo no manda señales de capacidad y numero de serie dentro del mismo programa. Ya intente los siguientes metodos. -Probar en Varias computadoras -Probar en todos los puertos USBs -Probar x SSH -Probar todos los firmwares de hehco no me deja hacerle downgrade a 1.0.2 o 1.1.1, 1.1.2, 1.1.3 -Ya probe sin la sim o con la sim de AT&T además instalando y desinstalando todas las versiones que hay de ITUNES las siguientes: iTunes 7.6.1.9 iTunes 7.6.0.29 iTunes 7.5.0.20 iTunes 7.4.3.1 iTunes 7.4.2.4 iTunes 7.4.1.2 iTunes 7.4.0.28 y pues realmente no se que hacer ya lo puse en modo de DFU, en RECOVERY MODE y tambien no tiene WIFI alguna ayuda??? He usado Ziphone ver de 2.0 a 3.0, iDemocracy 3.0, iPwns, iBrickr ver. 0.91, iBrickr ver. 1.13, iBackup.

iTunes error 9006 may appear when attempting to download, restore, or update an iPhone or iPad. Typically you'll see an iTunes error message that states something like "There was a problem downloading software for the iPhone. An unknown error occurred (9006)." Try the following tips to resolve error 9006 in iTunes if you encounter the error problem when updating iOS system software.

1. Insure that you have an active network connection and are connected to the internet
2. Quit out of iTunes
3. Update iTunes and also install any available software updates to Mac OS (or Windows, if applicable)
4. Reboot the computer (Mac or PC)

If above methods fail to help you out on the error 9006, get more solutions here: fix iTunes Error 9006 with 6 useful ways. Hope it be helpful for you.

Probably something went wrong, and your iPhone itself sees that too. That's why your iPhone asks to connect it to your PC or Mac with iTunes installed.
-Start iTunes on your PC or Mac
-Connect your iPhone to the PC or Mac
-Probably iTunes will advise to recover your iPhone.
>>If you didn't make regular backups of your data you probably will lose the data that's on your iPhone.<<
-Wait until the recovery procedure is done and see if your iPhone works again.

What if iTunes doesn't recognize your iPhone anymore in iTunes?
Thy a "soft reset' by pressing the ON/OFF button on top of your iPhone and the round menu button underneath your screen simultaneously until your iPhone reboots. Check if your iPhone connects to iTunes and try the recovery.
I hope this will help you solving your problem.

After updating OS, you may receive "iTunes could not connect to the iPhone because an invalid response was received from your device".
iTunes Could Not Connect to the iPhone iOS 10 iTunes Invalid Response...
Here are the best four methods for you to refer to fixing this iTunes could not connect to the iPhone invalid response problem, via updating iTunes and iPhone, uninstalling and reinstalling iTunes, and using iPhone alternative.

salam,dear, Resolution

1. Remove any proxy information you have set up.
2. Update to the latest iTunes software version.
3. Try turning off your Firewall to see if the issue is resolved (this includes the built-in Firewall or a third-party Firewall such as Norton Personal Firewall, McAfee, Symantec, etc.). Learn how to turn off your Firewall:
• Steps for Windows.
• Steps for Mac OS X.

Also check me

Error 13019 during sync:
Please update to the latest version of iTunes. The latest version of iTunes can be downloaded from http://www.apple.com/itunes/download/. If updating to latest version of iTunes does not resolve the issue, continue:
Please follow the same steps if the error occurs while syncing content other than music (applications, podcasts, and so on), but deselect the content that stops the sync. Deselect one type of content, then attempt to sync. Continue until you sync without error. Deselect Apps last, since restoring your Apps would take longer than restoring other content.
Error occurs while syncing music: The error will most commonly occur while syncing music. This issue can be resolved by following these steps:
Select the iPhone or iPod touch in iTunes under Devices. Click the Music tab and under the Sync music option, choose Selected playlists. Deselect the Voice Memos playlist. Click Apply and then click Sync. If the above steps do not resolve the issue, check the device and the iTunes library for duplicate voice memos. If you find any duplicate voice memos, delete the duplicates and then sync.
If those steps do not resolve the issue, then follow these steps:
Select the iPhone or iPod touch in iTunes under Devices. Click the Music tab and deselect the Sync Music option. Click Apply and then click Sync. After the sync is complete, reselect the Sync Music option. Click Apply and then click Sync. Test in a new user account
If the steps above do not resolve the issue, attempt to sync with iTunes while logged in as a new admin user. Follow these steps to create a new administrator user:
Windows XP, Windows Vista, and Windows 7 From the Start menu, choose Control Panel. Open User Accounts. Select Create a new account and follow the instructions to complete the account setup process. Once the new account is created, choose Log Off from the Start menu. Log in to the newly created user account.
Mac OS X From the Apple menu, choose System Preferences. Choose View > Accounts. Click the "+" (you may need to authenticate to be able to click this). Give the new user account a name and short name and enter a password. Select the checkbox for "Allow user to administer this computer". This makes the user an admin user. Click Create Account. Log out and then log in to the new account. If the error does not occur in the new user account, other content is causing the error. Proceed to the next section.
If the error does occur in the new user account, the issue may be caused by content downloaded or created on the device, such as podcasts and voice memos. Removing content from the device may address the issue.

Find your solution from the list,
Apple Iphone Smartphone
Codes:

• Unlock Code,
• Password,
• Puk Code,
• Lock Code,
• Other Codes.

Software & Hardware Problems

• Software Problems (Hang, Youtube etc.)
• Hardware Problems (Display, Charging etc.)

Find Your Solutions for other Apple Products:
Apple Iphone 3G
Apple iPod Touch Digital Media Player

Hi,
Here u can follow the steps

Step 1: Make sure you have downloaded the latest version of iTunes if you haven’t already. Download iTunes 8.2 from the link given below.
Step 2: Now connect your iPhone with your PC. You must connect it to a single usb port on the backside of your computer. Do not use any usb hub or the ports in the front as this could cause an error during update process.
Step 3: Start iTunes 8.2. Sync your iPhone with your PC so that iTunes backs-up all your important data including settings, apps, music, contacts and photos.
Step 4: You will now have to download a custom cooked firmware for your iPhone version (2G or 3G). I can’t post the download links for these files for the reasons you all know very well. Just Google “iPhone 2G Custom 3.0” (If you are using iPhone 2G) or “iPhone 3G Custom 3.0” (If you are using iPhone 3G) and use one of the torrent links to download the custom created .ipsw file.
Step 5: Once you have downloaded the required .ipsw file, Copy/Paste it into this location:
“C:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates\” (Windows 7)
“C:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates\” (Windows Vista)
“C:\Documents and Settings\[username]\Application Data\Apple Computer\iTunes\iPhone Software Update\” (Windows XP)
Step 6: Restart iTunes. You will now be prompted to install this firmware you just download. Just close this prompt dialog by clicking on “x” from the top right-most corner of the window.

Step 7: Now you will have to restore your iPhone to this custom firmware 3.0 that you just downloaded. Click on your phone from the sidebar in iTunes to get to this screen as shown in the screenshot below:

Now press and hold left “Shift” button on the keyboard and then click on “Restore” (Not “Update) button in the iTunes and then release the “Shift” button.

This will make iTunes prompt you to select the location for your downloaded custom firmware 3.0. Select the downloaded .ipsw file and click on “Open”.
Step 8: Now sit back and enjoy as iTunes does the rest for you. This will involve a series of automated steps some of which are highlighted below:

Don’t do anything silly at this point. Just wait while iTunes installs the new firmware 3.0 on your iPhone. Your iPhone screen at this point will be showing a progress bar indicating installation progress. After the installation is done, iPhone will restart automatically and you should now have a fully unlocked and jailbroken iPhone 2G. iPhone 3G on the hand will only be jailbroken, not unlocked. iPhone 3G users will have to wait for Dev-Team to release ultrasn0w on Cydia in order to unlock their phones.
Step 9: Once you are done with the unlocking and jailbreak process. You can now restore all your settings, apps, music, contacts and photos to the newly installed firmware version 3.0 by restoring the backup that you made in Step 3 from iTunes.

Feel free to ask me any question here should you run into any problem during the update process.
Disclaimer: This guide is for testing & educational purposes only. I’m not responsible for any loss of important data or malfunctioning of your iPhone.
Download Links:
Download iTunes 8.2
Download iPhone OS 3.0 Custom Firmware (iPhone 2G) [Screenshot]
Download iPhone OS 3.0 Custom Firmware (iPhone 3G) [Screenshot]

/**/ Thanks

Thiru

Update and restore error messages on iPhone and iPod touch Last Modified: April 21, 2009 Article: TS1275 Old Article: 307219 Symptoms When trying to update or restore your iPhone or iPod touch with iTunes, you may see an error message in iTunes that stops the update or restore process. You may also see the "Connect to iTunes" screen on your iPhone or iPod touch:


The error message in iTunes may also include one of the following numbers (but is not limited to): 2, 4, 5, 6, 9, 13, 19, -18, -48, -50, 1002, 1011, 1013, 1601, 1602, 1603, 1604, 1608, 1609, 1611, 1612, 2003, 2004, -9808
Products Affected iPhone, iTunes 7 for Mac, iTunes 7 for Windows, iPod touch, iPhone 3G, iTunes 8 for Windows, iTunes 8 for Mac, iPod touch (2nd generation) Resolution Many restore errors can be resolved using the troubleshooting steps found in this document.
Update to the latest version of iTunes
To see if you have the latest version of iTunes, open iTunes and:
Windows: Choose Help > Check for Updates Mac: Choose iTunes > Check for Updates

Restart your computer Simply restarting the computer can clear up certain issues that could prevent iPhone or iPod touch from being restored. After restarting, try restoring the device again in iTunes.
USB Troubleshooting Connect iPhone or iPod touch to a different USB port on your Mac or Windows PC. USB 2.0 ports that are built-in to the computer are preferred over a hub. If iPhone or iPod touch were connected to USB ports on the front of the computer, try connecting them to rear USB ports. After doing this, try to restore the device in iTunes.
If this fails, Restore on a different computer. If the issue is not resolved with the above steps, try to restore on a different computer. Ensure that the computer you are restoring on has USB 2.0 ports, the latest version of iTunes, and that you are connecting directly to the computer.
Advanced Steps
Make sure you have admin access

If your still having problems estore using a new user account Create a new user account on your computer and try to restore while logged in as the new user. iTunes will download a new version of the software restore file. After creating the new user, log in to that account and open iTunes and attempt to restore to see whether the issue persists in this new user.

Windows Vista and Windows XP
From the Start menu, choose Control Panel. Open User Accounts. Select Create a new account and follow the instructions to complete the account setup process. Once the new account is created, choose Log Off from the Start menu. Log in to the newly created user account.
When a restore issue is specific to a user, it is likely due to an unusable .ipsw file. The ".ipsw" files are what iTunes uses to restore your iPod or iPhone. If those files are unusable, then try deleting them so iTunes can download a new copy of them. Creating a new user will also cause new .ipsw restore files to be downloaded in the new user. You can find the ".ipsw" files in these locations:
Windows XP iPod touch: C:\Documents and Settings\[username]\Application Data\Apple Computer\iTunes\iPod Software Updates (If you don't see the Application Data folder, you may need to show hidden files by opening (My Computer) Click on Folder Options. in that window click on the view tab, and make sure that show hidden files is selected.
Windows Vista iPod touch: C:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPod Software Updates (If you don't see the AppData folder, you may need to show hidden files)
1. Open Folder Options by clicking the Start button , clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options. 2. Click the View tab. 3. Under Advanced settings, click Show hidden files and folders, and then click OK.

After removing and reinstalling the latest version of iTunes, try restoring iPhone or iPod touch again in the origonal user account.




As an added note, If running Microsoft Windows XP and the issue is resolved on another computer, but you continue to experience difficulties on your original computer, you may want to update or reinstall your Windows USB drivers and then try restoring iPhone or iPod touch again.
If none of these steps work you will need to contact either apple at

1-800-APL-CARE (1-800-275-2273)
Or another service provider of your choosing to get the ipod touch serviced or replaced.

Update and restore error messages on iPhone and iPod touch Last Modified: April 21, 2009 Article: TS1275 Old Article: 307219 Symptoms When trying to update or restore your iPhone or iPod touch with iTunes, you may see an error message in iTunes that stops the update or restore process. You may also see the "Connect to iTunes" screen on your iPhone or iPod touch:


The error message in iTunes may also include one of the following numbers (but is not limited to): 2, 4, 5, 6, 9, 13, 19, -18, -48, -50, 1002, 1011, 1013, 1601, 1602, 1603, 1604, 1608, 1609, 1611, 1612, 2003, 2004, -9808
Products Affected iPhone, iTunes 7 for Mac, iTunes 7 for Windows, iPod touch, iPhone 3G, iTunes 8 for Windows, iTunes 8 for Mac, iPod touch (2nd generation) Resolution Many restore errors can be resolved using the troubleshooting steps found in this document.
Update to the latest version of iTunes
To see if you have the latest version of iTunes, open iTunes and:
Windows: Choose Help > Check for Updates Mac: Choose iTunes > Check for Updates

Restart your computer Simply restarting the computer can clear up certain issues that could prevent iPhone or iPod touch from being restored. After restarting, try restoring the device again in iTunes.
USB Troubleshooting Connect iPhone or iPod touch to a different USB port on your Mac or Windows PC. USB 2.0 ports that are built-in to the computer are preferred over a hub. If iPhone or iPod touch were connected to USB ports on the front of the computer, try connecting them to rear USB ports. After doing this, try to restore the device in iTunes.
If this fails, Restore on a different computer. If the issue is not resolved with the above steps, try to restore on a different computer. Ensure that the computer you are restoring on has USB 2.0 ports, the latest version of iTunes, and that you are connecting directly to the computer.
Advanced Steps
Make sure you have admin access

If your still having problems estore using a new user account Create a new user account on your computer and try to restore while logged in as the new user. iTunes will download a new version of the software restore file. After creating the new user, log in to that account and open iTunes and attempt to restore to see whether the issue persists in this new user.

Windows Vista and Windows XP
From the Start menu, choose Control Panel. Open User Accounts. Select Create a new account and follow the instructions to complete the account setup process. Once the new account is created, choose Log Off from the Start menu. Log in to the newly created user account.
When a restore issue is specific to a user, it is likely due to an unusable .ipsw file. The ".ipsw" files are what iTunes uses to restore your iPod or iPhone. If those files are unusable, then try deleting them so iTunes can download a new copy of them. Creating a new user will also cause new .ipsw restore files to be downloaded in the new user. You can find the ".ipsw" files in these locations:
Windows XP iPod touch: C:\Documents and Settings\[username]\Application Data\Apple Computer\iTunes\iPod Software Updates (If you don't see the Application Data folder, you may need to show hidden files by opening (My Computer) Click on Folder Options. in that window click on the view tab, and make sure that show hidden files is selected.
Windows Vista iPod touch: C:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPod Software Updates (If you don't see the AppData folder, you may need to show hidden files)
1. Open Folder Options by clicking the Start button , clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options. 2. Click the View tab. 3. Under Advanced settings, click Show hidden files and folders, and then click OK.

After removing and reinstalling the latest version of iTunes, try restoring iPhone or iPod touch again in the origonal user account.




As an added note, If running Microsoft Windows XP and the issue is resolved on another computer, but you continue to experience difficulties on your original computer, you may want to update or reinstall your Windows USB drivers and then try restoring iPhone or iPod touch again.
If none of these steps work you will need to contact either apple at

1-800-APL-CARE (1-800-275-2273)
Or another service provider of your choosing to get the ipod touch serviced or replaced.




I hope this article is very helpful for you and easy to follow. Good luck :)

I just had this problem and it turned out to be... It didn't like my iPod cable. Switched to the iPhone cable and it worked.
Seems to be an iPhone 2.0 prob, or 3g prob, since I was using the iPod cable to sync my old iPhone just fine.