Redsnow
How To Download Redsnow 0.9.4
Download Red Snow 0.9
Redsnow 0.9 6rc12 Beta

I have an iphone 4 Build IPHONE 3,15.19B176 which uses the gervey sim,i have downloaded RedSn0w 0.9.10b6 for windows, i managed to jailbreak it, went on to just boot. When the phone switchs on it jus starts serching the it says no service, it instructs me to call 112 for less tha 3 seconds then go to flight mode but i never get the no sim card installed or sim falure message.

IPhone Dev Team has released a minor update of Redsnow. Redsnow 0.9.6 RC 12 fixes the issues related to boot animations. If you have already jailbroken your device with any previous version of Redsn0w but you are facing problem in setting animated boots, you can simply re-run Redsn0w release candidate 12 on it.
Redsn0w 0.9.14b2 (OS X) redsn0w 0.9.14b2 (Windows — run in Administrator Mode) Latest Version Redsnow for Windows and Mac: redsn0w 0.9.15b3 (OS X — use Ctrl-Click-Open if on Mountain Lion for now) redsn0w 0.9.15b3 (Windows — run in Adminstrator Mode) Please bookmark and save this page.
Download the latest version of Redsn0w.

Update: Redsn0w does not support iOS 7 yet. But you can jailbreak iOS 7, iOS 7.0.1, 7.0.2, 7.0.3 and iOS 7.0.4 using evasi0n 7.

Redsnow is one of the best and all-time-favorite software released by iPhone Dev Team to jailbreak all iDevices including iPhone 3GS, iPhone 4, iPhone 4S, iPad 1, iPad 2, and iPod Touch models. Redsnow can jailbreak any iOS firmware, up to iOS 6.1.3. But it provides tethered jailbreak on some devices running on specific iOS. In this post we will try to cover everything you need to know about Redsn0w and jailbreaking.

The below mentioned jailbreak procedure is general and it is applicable on all supported devices and iOS versions. However, we have also written few separate posts regarding the latest iOS releases

If you are looking for iOS 6 jailbreak, read our updated step by step redsnow guide
How to Jailbreak iOS 6.0.1 with Redsn0w on iPhone 4 and older devices
How to Jailbreak iOS 6.1 beta using redsnow on iPhone 4 and older devicees
For iOS 5.1.1 or any previous version, simply use the below mentioned jailbreak guide.
To download the latest version of redsnow scroll down to the bottom of this post

What is Redsnow:

This jailbreak tool is developed by iPhone Dev Team and its very first version is called QuickPWN. But soon it was renamed as Redsnow. It is a universal jailbreak and it can accommodate any type of exploit to jailbreak any iOS firmware. Unlike the other popular jailbreak tools like Sn0wbreeze, which is compatible with Windows OS only, and PwnageTool, which runs on Mac OS, Redsn0w support both Windows and Mac operating systems.

Untethered vs Tethered Jailbreak:

In untethered jailbreak, you can boot your device without needing any special treatmemnt. In this type of jailbreak all the functions of the iPhone work properly and you can also install third party apps from cydia and apply the customizations to your device.

But in tethered jailbreak you have to connect your device with PC and use the “Just Boot’ option present in Redsnow to bypass the Apple logo after every time your device restarts. In few cases it restarts normally but you can’t use Safari, Cydia and other app until your boot it tethered.

Functions:

Redsnow

Jailbreak:

The basic and the most important function of Redsn0w is to jailbreak the idevice and install the Cydia on it. When you open this jailbreak tool, you will see two options 1) Jailbreak 2) Extras. If you want to jailbreak you device only, connect your device with PC and press the first option. Follow the instructions and get your device jailbroken. The complete step by step jailbreak instructions are also in this post.

You can also performing other functions using Redsn0w which are available under Extra section. There are the functions incorporated in Redsn0w.

Just Boot:

If you are having tethered jailbreak on your device, you’ll have to boot it using this option of Redsnow to bypass the Apple logo and bringthe Safari, Cydia and others apps in working condition.

Pwned DFU:

DFU mode is required by redsnow to perform the most of its functions. But there is a slightly difference between simple DFU mode and Pwned DFU mode. Pwned DFU mode is mainly used to restore the custom firmware on iPhone. It removes the errors which an iPhone would give under normal DFU mode during custom firmware restore. So, if you are installing a custom-cooked firmware on your device, you should use this Pwned DFU mode.

Recovery fix:

If you device is stuck in recovery loop after installing a firmware, you can use this option to get out of problem.

SHSH Blobs:

Redsnow also allows you to manage the SHSH blobs of iOS firmwares. SHSH blobs are required to restore iOS on device. Apple provides the SHSH blobs for the latest stable version only. In case you want to install a previous version of iOS firmware, you’ll need these blobs and in such situations Redsn0w does its job. The following option are available to manage the SHSH blobs.

Fetch: This option extracts the SHSH blobs from the currently installed iOS on the device and submit them to Cydia for later use. Fetching requires the device to be in DFU mode.
Verify: It verifies the existing available blobs. It also requires DFU mode.
Submit: You can also submit locally saved SHSH blobs to Cydia using this option.
Query: This option contacts with Cydia server to tell for which iOS version the SHSH blobs are available.
Stitch: You can stitch the iOS with blobs so that you can downgrade to this particular firmware anytime even if Apple has stopped the signing of that iOS or even the Cydia server is not available. This option is not available for iPhone.

Select IPSW:

How To Download Redsnow 0.9.4

Redsn0w always need some files from the iOS which is currently installed on your iDevice and sometimes from the previous iOS version. If you want to jailbreak the latest version of iOS, Redsnow will extract the required files automatically from Apple’s servers. But if you downgrade to any previous version, in that case you’ll have to select the iPSW file manually which should be present on your computer. In any case it is always better to have a copy of iPSW file on your computer.

Custom iPSW:

This option present in Redsn0w allows you to preserve the baseband while cooking a custom firmware. It is very important step for all those users who use Ultrasn0w to unlock their device. Ultrasn0w unlockers should always use this option before installing the any firmware on their devices.

Even More:

There are also some more options available, like you can personalize the iOS by changing logo, you can identify the device in DFU mode and you can also clear the cache.

Jailbreak Guide:

Step 1: Install the latest version of iTunes on your PC.

Step 2: Back and sync your device with PC to save all your data.

Step 3: Now install the iOS firmware version you want to jailbreak on your device. If you are Ultrasn0w unlock, install the custom firmware built using the “Custom iPSW” option of Redsnow.

Step 4: Download, unzip and launch the latest Redsnow version after connecting your device with PC.

Step 5: If you want to jailbreak the latest iOS version, you can simply click on “Jailbreak” which the very first option you’ll see after you launch Redsn0w. But if you are jailbreaking any previous version, you have to select the IPSW file manually so that redsnow can extract the required file from iPSW. For this purpose use the “Select IPSW” feature available under Extras.

Step 6: Now click on Jailbreak. Select the “Install Cydia” and any other option you want to have on your device and click Next.

Step 7: Put your device into DFU mode by following the on-screen instructions. If you have iPad 2 or iPhone 4S, you don’t nee

Redsnow 0.9 6rc12