How to Restore iPhone 4, 3GS on iOS 4.0.1 Successfully, Bypassing iTunes 1004, 1015 Error

So you have an iPhone 4 or iPhone 3GS (New Bootrom), running iOS 4.0.1, with SHSH blobs saved on Cydia, and you want to restore your iPhone again to iOS 4.0.1. Now that Apple has stopped signing iOS 4.0.1, you wont be able to restore your iPhone 4 on iOS 4.0.1 by simply pointing iTunes to iOS 4.0.1 ipsw file. Because if you do so, iTunes will throw an error: “This iPhone [your name] iPhone could not be restored. This device isn’t eligible for the requested build.

Now to fix this error, you will have to make a couple of changes in your system’s “host” file, by pointing it towards Cydia server instead of Apple’s. Also this is not it, you may also receive another error during restore: 1004, or 1015 from iTunes saying: “The iPhone [you name] iPhone could not be restored. An unknown error occurred (1004)”.
The following step by step instructions will guide you on how to fix these errors so that you can restore any of your new iOS devices like iPhone 4 or 3GS to iOS 4.0.1 successfully.
Step 1: Download the required iOS 4.0.1 ipsw firmware files from here.
Step 2: Put your device into DFU mode (not recovery mode).

• Connect your iPhone to your computer.
• Turn iPhone off.
• Start iTunes.
• Hold Power and Home buttons together for 10 seconds or so.
• Release Power button but keep holding the Home button until your computer recognizes a new USB device.
• iTunes will now recognize your iPhone.

Note: Your iPhone screen at this time should be blank (black in color), if not, then you are most likely in Recovery Mode, not DFU mode.
Step 3: Before you proceed, you must make sure that you have your SHSH blobs saved on Cydia for the firmware version you restoring or downgrading to. If you don’t have your SHSH files saved, you cannot downgrade or restore to iOS 4.0.1.
So now, what we will do is to trick iTunes into thinking that it is watching Apple servers, while in real, we are going to change the address to Saurik’s server.

• Navigate to C:\Windows\System32\drivers\etc\ and locate “hosts” file.

Mac OS X users can get to “/etc/” directory by going through “Go –> Go to Folder” from Finder.

• Open this “hosts” file in Notepad (for Windows) or TextEdit (for Mac OS X) and add this

74.208.105.171 gs.apple.com

line as shown in the screenshot below:

Now simply save this file and you are good to go!
NOTE for Windows 7 and Vista: Start “Notepad” with Administrator privileges by right clicking on “Notepad” app, and click on “Run as Administrator“ option.
NOTE for Mac OS X: Make sure you have full read and write access on your account when you are saving the host file. If it still throws permission error, simply copy the host file to desktop, make the required changes, and then replace it with the original file in “/etc/” directory.
Step 4: You will now have to restore your iPhone to the firmware you downloaded in Step 1. Click on your phone icon from the sidebar in iTunes. Now press and hold left “alt” (option) button on Mac (Left “Shift” button on Windows) on the keyboard and then click on “Restore” (Not “Update” or “Check for Update”) button in the iTunes and then release this button.

This will make iTunes prompt you to select the location for your downloaded firmware file. Select that ipsw file and click on “Open”.
Step 5: Now sit back and enjoy as iTunes does the rest for you. This will involve a series of automated steps. Be patient at this stage and don’t do anything silly. Just wait while iTunes installs firmware on your iPhone. Your iPhone screen at this point will be showing a progress bar indicating installation progress. Now at some point, iTunes will probably throw 1004 or 1015 error at you. This is normal, just ignore this error as the firmware has already been successfully installed on the device.

Step 6: Your iPhone at this point will be stuck in Recovery Mode, showing that “Connect to iTunes” screen. To exit your device from Recovery Mode, download this program called TinyUmbrella (Windows / Mac). Run it and the click on “Kick Device Out of Recovery” button. Your device will now restart normally.

This is it, you should now be able to jailbreak and unlock your device on iOS 4.0.1 with JailbreakMe, guides for which can be found below:

Fix a broken screen on your iPhone 4 or iPhone 4S

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iPhone 4S Parody and Siri Funny

Why Jailbreaking iPhone

Why Jailbreaking iPhone?

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Jailbreak iPhone 4 , iPhone 4S , iPad 2, iPod touch Click Here

Jailbreak your iPhone, iPad, or iPod Touch

How to Jailbreak iPhone 4S, iPhone 4, iPad 2, iPod Touch , iOS 5

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Error 2005 After DFU

Here is solution to:
3194 - start and stop TU should solve this one
1600 - this one could be related to firewalls as well, so close all
2005 - this one could be ralted to USB port so switch USB port, its also related to hosts, TU should solve this one.
11 - this one, was solved with new custom 5.01, and downloading all SHSH and steps 2 - 4

All that I got while trying to do 4.3.3 to 5.01

Step by step how to avoid all at once, maybe some steps are not needed but I'm sure it will work like this:

1. I went to DFU mode run redsn0w then made Custom from 5.01 ! I got No_BB one.
2. Host thing got confusing to me, should I put # or not, so I started latest TU (Tiny Umbrella) and checked Save ALL Available SHSH in Advanced, Started TSS Server and stoped it. I checked SHSHs and found 5.01 there, I selected it doesn't know if that is important or not.
3. I started TU again, START TSS Server and close TU
3. ireb r4 pwned DFU
4. Itunes and restore with Shift.

Worked, all errors avoided.

iPhone in itune Error 1603

When trying to restore your iPhone in iTunes, you may see the following error message:

The iPhone could not be restored. An unknown error occurred. Error 1603

Solution

Here are common troubleshooting steps that may resolve this issue.

Update iTunes and iPhone

To update iTunes:

• Windows: Choose Help > Check for Updates.
• Mac: Choose iTunes > Check for Updates.

See this document for steps to update iPhone.

Restart Your Computer

Simply restarting your Mac or Windows PC may allow you to successfully restore your iPhone.

Try a Different USB Port

Connect iPhone to a different USB port on your Mac or Windows PC. USB 2.0 ports that are built-in to the computer are preferred. After doing this, attempt to restore your iPhone in iTunes.

Restart Apple Mobile Device Service (Windows only)

Restarting the Apple Mobile Device service on Windows XP or Windows Vista may allow you to successfully restore iPhone. Refer to the steps below for your version of Windows. Note: You'll need to sign in with an administrator account for these steps.

• Windows XP
  1. Close iTunes and disconnect iPhone.
  2. Choose Start > Control Panel.
  3. Inside the Control Panel, open Administrative Tools.
  4. Open Services.
  5. Select Apple Mobile Device and click Stop the service as shown below:
     
     
     
  6. After the service is stopped, click Start the service.
  7. After the Apple Mobile Device service has started again, open iTunes and connect iPhone.
  8. Select iPhone in the Source list, click the Summary tab, and then click Restore.
• Windows Vista
  1. Close iTunes and disconnect iPhone.
  2. Click the Windows Start button
  3. In the Start Search field type "Services."
  4. In the Programs section of the search results, Click "Services".
  5. Select Apple Mobile Device and click Stop the service as shown below:
     
     
     
  6. After the service is stopped, click Start the service.
  7. After the Apple Mobile Device service has started again, open iTunes and connect iPhone.
  8. Select iPhone in the Source list, click the Summary tab, and then click Restore.

Reset the iPhone sync history and restore

To reset your Sync History:

Windows

1. Open iTunes
2. On the Edit menu, click Preferences.
3. Click the iPhone tab.
4. Click the Reset Sync History button.

Mac

1. Open iSync.
2. Choose iSync > Preferences.
3. Click the Reset Sync History button.

After resetting sync history, restore iPhone.

Create a new user account and restore

Create a new user account and then restore iPhone.
Use the steps below if you're not sure how to create a new user. After creating the new user, log in to that account, open iTunes, and determine whether the issue you were experiencing persists in this new user.

Windows Vista and Windows XP

1. From the Start menu, choose Control Panel.
2. Open User Accounts.
3. Select Create a new account and follow the instructions to complete the account setup process.
4. Once the new account is created, choose Log Off from the Start menu.
5. Log in to the newly created user account.

Mac OS X

1. Choose Apple menu > System Preferences.
2. Choose View > Accounts.
3. Click the "+" (you may need to authenticate to be able to click this).
4. Give the new user a name and short name and enter a password.
5. Select the checkbox for "Allow user to administer this computer". This makes the user an administrator user.
6. Click Create Account.

Difference between iPad and iPhone charger

iPad has great display and faster processing Luckily I own both the Apple products the New iPad 2 and iPhone 4S. I often use my iPad for web browsing at home however coming to the charging lot of people expect that the ear phone are similar so chargers for these two gadgets are similar too in reality they are Not . How to identify the charges. Down below are the pictures of iPhone and iPad charger.

iPhone Charger

iPad 2 charger

Can you use an iPad charger for iPhone?  

You can use it . However it is adviced that you should use the dedicate charger. the reason been the voltage difference in on them:

• iPhone charger is 5W if your using it to charge iPad it would really long time to get charged.
• iPad charger is 10W if your using it charge iPhone you would notice it do the job in nearly half of the time.

conclusion:

1. DO NOT USE iPhone charger for iPad it would damage the battery life 
2. Notice the difference between charger and use the one which supplied with it.

How to reset hosts file default

To reset the Hosts file back to the default, follow these steps:

1. Click Start, click Run, type %systemroot% \system32\drivers\etc, and then click OK.
2. Rename the Hosts file to Hosts.old.
3. Create a new default hosts file. To do this, follow these steps:
   1. Right-click an open space in the %WinDir%\System32\Drivers\Etc folder, point to New, click Text Document, type hosts, and then press Enter.
   2. Click Yes to confirm that the file name extension will not be .txt.
   3. Open the new Hosts file in a text editor. For example, open the file in Notepad.
   4. Copy the following text to the file:
      
      For Windows XP or for Windows Server 2003

      # Copyright (c) 1993-1999 Microsoft Corp.
      #
      # This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
      #
      # This file contains the mappings of IP addresses to host names. Each
      # entry should be kept on an individual line. The IP address should
      # be placed in the first column followed by the corresponding host name.
      # The IP address and the host name should be separated by at least one
      # space.
      #
      # Additionally, comments (such as these) may be inserted on individual
      # lines or following the machine name denoted by a '#' symbol.
      #
      # For example:
      #
      #      102.54.94.97     rhino.acme.com          # source server
      #       38.25.63.10     x.acme.com              # x client host
      
      127.0.0.1       localhost

      For Windows Vista or for Windows Server 2008

      # Copyright (c) 1993-2006 Microsoft Corp.
      #
      # This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
      #
      # This file contains the mappings of IP addresses to host names. Each
      # entry should be kept on an individual line. The IP address should
      # be placed in the first column followed by the corresponding host name.
      # The IP address and the host name should be separated by at least one
      # space.
      #
      # Additionally, comments (such as these) may be inserted on individual
      # lines or following the machine name denoted by a '#' symbol.
      #
      # For example:
      #
      #      102.54.94.97     rhino.acme.com          # source server
      #       38.25.63.10     x.acme.com              # x client host
      
      127.0.0.1       localhost
      ::1             localhost

      For Windows 7

      # Copyright (c) 1993-2006 Microsoft Corp.
      #
      # This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
      #
      # This file contains the mappings of IP addresses to host names. Each
      # entry should be kept on an individual line. The IP address should
      # be placed in the first column followed by the corresponding host name.
      # The IP address and the host name should be separated by at least one
      # space.
      #
      # Additionally, comments (such as these) may be inserted on individual
      # lines or following the machine name denoted by a '#' symbol.
      #
      # For example:
      #
      #      102.54.94.97     rhino.acme.com          # source server
      #       38.25.63.10     x.acme.com              # x client host
      
      # localhost name resolution is handle within DNS itself.
      #       127.0.0.1       localhost
      #       ::1             localhost

    Add the below line to relevant version OS and save if you encounter any itune errors:
   
   74.208.10.249 gs.apple.com 
   
   
   Save and then close the file.
   

How to Fix Error 3194

How to fix the iTune or iPhone error 3194 well the fix is the nothing to do with operating systems, however make sure the hardware is functioning properly like the USB port, date cable and pins

Follow the below Steps:

•  90% of the time the error lies in the hosts file wondering what hosts file is?
•  To open your hosts file, in Mac OS X this is /etc/hosts and in Windows operating systems this is c:\windows\system32\drivers\etc\hosts
•  Open file name hosts ,if your on window 7 you can’t make change to the file directly within the folder so make a copy of it on desktop area and the try to replace it in the c:\windows\system32\drivers\etc\hosts
• To the following lines in the end of the file
• 74.208.105.171 gs.apple.com
•  Restart your PC and try Restoring your iPhone, if doesn’t work try different USB Port or PC instead.
•  Sometime just restarting the PC does  the magic

Also check out  how to put your iPhone in DFU mode