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iTunes errors 21, 1603 or 1604 when updating 4S from 5.0.1 to 5.1.1

King Mustard

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I am attempting to update my jailbroken iPhone 4S from 5.0.1 to 5.1.1.

If I click the Restore button, I get error 1604.

If I shift-click on the Restore button (then use iPhone4,1_5.1.1_9B206_Restore), I get error 1603.

I have:


  • Ensured I am running the latest version of iTunes
  • Restarted my PC (Windows 7 x64)
  • Tried to use a different USB port
  • Restarted the Apple Mobile Device service
  • Reset the iPhone sync history in iTunes
  • Booted into DFU mode before trying update
Also, sometimes I get error 21.

Any ideas?
 

RIPx1xRIP

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Back up your device and close itunes

After that turn it in DFU mode

Open iTunes and restore your device


Make sure that you hsve the lastest version of itunes
 

RIPx1xRIP

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Bro you cannot update you jailbroken device , only you cant update it if its unjailbroken

If its jailbroken then you must restore it
 

RIPx1xRIP

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Ohh sorry i didnt read carefully :p

How to fix Error 1603 When you try to restore your iPhone in iTunes



$image-344364223.jpg



How to Fix iTunes error 1603 :Step 1: Check for iTunes updates :

Windows: Choose Help ? Check for Updates.
Mac: Choose iTunes ? Check for Updates.
Step 2: Restart your Computer

Restart your computer may help to fix iTunes error 1603
Step 3: Try different USP Port

Try to connect your iPhone with computer via another USB port, then try to restore using iTunes.
Step 4: Restart Apple Mobile Device Service (Windows Only) :
Restoring Apple mobile device service on Windows XP or Windows Vista / 7 may help you to fix iTunes error 1603 while restoring your iPhone.
Windows XP

Close iTunes and disconnect iPhone.
Choose Start ? Control Panel.
Inside the Control Panel, openAdministrative Tools.
Open Services.
Select Apple Mobile Device and clickStop the service as shown below:


$image-2680306045.jpg


After the service is stopped, click Start the service.
After the Apple Mobile Device service has started again, open iTunes and connect iPhone.
Select iPhone in the Source list, click the Summary tab, and then click Restore.

Windows Vista

Close iTunes and disconnect iPhone.
Click the Windows Start button
In the Start Search field type “Services.”
In the Programs section of the search results, Click “Services”.
Select Apple Mobile Device and click Stop the service as shown below:
After the service is stopped, click Start the service.
After the Apple Mobile Device service has started again, open iTunes and connect iPhone.
Select iPhone in the Source list, click the Summary tab, and then click Restore.
Step 5:

Reset the iPhone sync history and restore on Windows and Mac – How to do this ?
Windows

Open iTunes
On the Edit menu, click Preferences.
Click the iPhone tab.
Click the Reset Sync History button.
Mac

Open iSync.
Choose iSync ? Preferences.
Click the Reset Sync History button.
Step 6:
Create a new user account – How to do this ?
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.
Mac OS X

Choose Apple menu? System Preferences.
Choose View ? Accounts.
Click the “+” (you may need to authenticate to be able to click this).
Give the new user a name and short name and enter a password.
Select the checkbox for “Allow user to administer this computer”. This makes the user an administrator user.
Click Create Account.
If the above Steps didn’t solve your iTunes error 1603 you have to download iReb



as it will help you to bypass iTunes error 1603.
 

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