Download Windows Free
Download iOS 5.1.1 IPSW Directly. These are direct download links to firmware files hosted by Apple, right-click and “Save As” for best results. The file extension should be.ipsw and nothing else, using IPSW files is easy but for most users it’s recommended to download through iTunes or the iOS device. Download current and previous versions of Apple's iOS, iPadOS, watchOS, tvOS and audioOS firmware and receive notifications when new firmwares are released. ITunes is a free application for Mac and PC. It plays all your digital music and video. It syncs content to your iPod, iPhone, and Apple TV. And it's an entertainment superstore that stays open 24/7. ITunes also allows you to bless locally networked computers with Home Sharing privileges, allowing unrestricted access to their music, videos.
Download Windows 8.1
iReb is a tool created by iH8sn0w, designed for Windows and Mac that will put your device in a DFU Pwned jailbreakable state so that you can use a custom firmware on it. The main purpose of this tool is to allow users to bypass iTunes errors when downgrading and restoring.
Most users, when recovering a custom firmware, using with PwnageTool or Snowbreeze, encountered several iTunes errors such as error 1600 or other like 1015, 1604, etc. these errors appear each time when both of the mentioned programs were used in order to install a custom firmware. These errors, though are not quite pleasant, they also lock the restore process and interfere with other features such as the Wi-Fi or Bluetooth.
In this respect, to fix all these annoying errors and problems users complained about, iH8Sn0w developed this tool for Windows users, without which no users is able to complete the recovery process for any custom firmware on any Apple device. iREB R7 for iOS 7 is now available and it will fix the iTunes errors 1015, 1600, 1601, 1602, 1603, 1604, and in the same time, it will successfully complete the restoring process for the iOS 6.1.3 downgrading.
Initially released compatible with Windows only, iREB was proven to be of a great help for all those who encountered problems and errors when uploading the custom IPWS. Now, fortunately, we have the possibility o download iREB on Mac, as well. The Pwned DFU tool is now available for Mac OS X. this means that users running Mac OS X 10.4 and upwards will be able to fix errors on iDevices running iOS 3 up to iOS 7.
The Windows version offers a pretty simple GUI and instructions on how to enter DFU mode, while the Mac OS X version, on the other hand, is plainer and it runs in a terminal window. It is worth mentioning the fact that Mac OS X version does not offer instructions, but it works in the same way as the Windows version does.
Now, in order to make everything clear for you, before you start the iREB download, here are some things you need to keep in mind. First of all, as I stated above, the tool is compatible with both desktop operating systems, meaning Windows XP / Vista / 7 and Mac OS X 10.4 and above.
In the same time, if you download iREB R7, for instance, you will be able to use it on iPhone 2G, 3G, 3GS (old and new BootROM), iPhone 4, iPod Touch 1G, 2G (MB and MC), 3G, 4, iPad and Apple TV 2. At this point, if you download iREB R7, you will not be able to use it on new A5 / A6 processor devices since it does not support such devices. However, I am sure that this is only a matter of time since the developers will definitely find a way to solve this issue as well.
Download iREB and Enter Pwned DFU Mode
If you are facing various iTunes errors while restore the iOS, then you should definitely have the latest iREB download. This will allow you to install any custom firmware you want on your iOS-running device, and now, by using both Windows and Mac OS X. however, the first step is to create the custom IPWS you want to upload. For this, you can use a tool like Snowbreeze or PwnageTool they can easily help you save the SHSH blobs as well as to create that cooked IPSW that you eagerly want.
Once you decided to download IREB on your device, everything will go smoothly. The tool is actually pretty simple and easy, and its purpose is pretty clear. First, as imagined, you should start the iREB R7 download. This is the latest iREB version available at this point. Launch the program while you connect your device to your computer. Choose your device using the right mouse button. Next, enter your device in the DFU mode as usual by holding the power button and the home button at the same time for about 10 seconds.
If this goes well, then, your device should be in Pwned DFU mode in no time and the iTunes errors should forever disappear. At this point, you can restore using customized IPSW firmware with the help of iTunes.