Download Redsn0w 0.9.7b1 for iOS 4.2.1 untethered jailbreak

Redsn0w 0.9.7b1 jailbreak

As promised, iPhone Dev team announced Redsn0w 0.9.7b1 untethered jailbreak for iOS 4.2.1. Redsn0w 0.9.7b1 jailbreak is designed to work with iPhone 4, iPod Touch 4G and Apple iPad. Those who are using iPhone 3G, iPhone 3G S, iPod Touch 2G on iOS 4.2.1 already have a fully working untethered jailbreak with Redsn0w 0.9.6b6. As you might know, an untethered jailbreak let you restart your device to jailbreak mode, without the need of connecting the device to a computer. Redsn0w 0.9. 7b1 download released today is intended for Mac users who are interested in helping the dev team in testing the jailbreak for any bugs.

These are the requirements for running Redsn0w 0.9.7b1.

An Apple iPhone 4, iPod Touch 4G or iPad with iOS 4.2.1 installed.

iOS 4.2.1 ipsw (direct link here).

A developer account with Apple for getting iOS 4.2.1 beta 3.

You need your Signature Hash files saved (on Cydia server) for iOS 4.2.1 beta 3.

Mac OS X.

Steps for iOS 4.2.1 untethered jailbreak with Redsn0w 0.9.7b1.

iOS 4.2.1 untethered jailbreak with Redsn0w 0.9.7b1

Redsn0w 0.9.7b1

Jailbreak your iPhone 4, iPad or iPod Touch 4G with Redsn0w 0.9.6 b4 for Mac.

Now Open Cydia and check whether you have Signature Hash files for iOS 4.2b3 saved on Cydia server. If so, proceed to the next step.

Download Redsn0w 0.9.7b1 here

Download usbmuxd.

Extract usbmuxd file, and start Mac OS X Terminal app from Applications> Utilities folder.

Now point the Terminal app to the python-client directory in usbmuxd folder and enter the commands in each line.

chmod +x
./ -t 22:2222

Usbmuxd will make the Apple USB cable work with the jailbreak application. Make sure that you enter the commands exactly as shown above.

Run Redsn0w 0.9.7b1 and point it to the official iOS 4.2.1 firmware file.

Click next, select Jailbreak Monte option and browse to the downloaded iOS 4.2.1 beta 3.

Redsn0w 0.9.7b1 will now process jailbreak and in the next step choose the option Jailbreak Monte (untether).

Now enter into the DFU mode by following the on screen instructions.

Redsn0w 0.9.7b1 will complete the jailbreak process and will start your device in the untethered mode.

This version of Redsn0w is a little unstable, and therefore, some device options may stop working after jailbreak. So normal users and those who rely on the Ultrasn0w unlock are not advised to use this jailbreak. Redsn0w 0.9.7b2 or the upcoming versions of the tool would be able to process the untethered jailbreak with  locally saved Signature Hash files and without usbmuxd.

Update: Download Redsn0w 0.9.7b3 here. (Install Redsn0w 0.9.7b3 after a fresh restore with iOS 4.2.1)

Bugs fixed: Native app crashes with Redsn0w 0.9.7b2, Issues with embedded videos and FaceTime with Redsn0w 0.9.7b3.

Update: Download Redsn0w 0.9.7b4 here. Now you don’t need to use usbmuxd and any related command part for jailbreaking. Just follow the other steps given in the tutorial and finally use Redsn0w 0.9.7b4 for untethered jailbreak.

Update: Download Redsn0w 0.9.7b5 here. Bluetooth issues are now fixed.

Update: Download Redsn0w 0.9.7b6 here. Issues with Skype fixed.

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14 thoughts on “Download Redsn0w 0.9.7b1 for iOS 4.2.1 untethered jailbreak

  1. why wont they release it for windows users to test? jailbreaking has always ben do it at ur own risk so just release it for everyone and we can fix the bugs ourselves…

  2. “Those who are using iPhone 3G, iPhone 3G S, iPod Touch 2G on iOS 4.2.1 already have a fully working untethered jailbreak with Redsn0w 0.9.6b6.”

    I tried the 0.9.6b6 version for my iPod Touch 2G and it does not support the MC model. The statement above needs to be clarified to prevent further disappointment by people like me looking for the untethered solution.

  3. That’s correct. Redsn0w 0.9.6b6 doesn’t support MC models and iPhone 3G S with new iBoot ROM.

  4. if i jailbroke my iphone 4 4.2.1 with redsnow 9.6b4 can i get it unteathered without deleing everything?

  5. It´s true, i have the same problem, i have the ipod Touch 2G and it does not support the MC model, i tried all redsn0w and none of them work so that statement is not true:

    “Those who are using iPhone 3G, iPhone 3G S, iPod Touch 2G on iOS 4.2.1 already have a fully working untethered jailbreak with Redsn0w 0.9.6b6.”


    Does anyone knows a solution for my problem!!???

  6. Sorry folks, that’s for the non MC or Old iBoot ROM models. You guys wait for the final release in Redsn0w 0.9.7 series. It would come out by the end of this month.

  7. Tutorial Completo em Port RedsN0w 0.9.7b1 Jailbreak IOS 4.2.1
    Como fazer Jailbreak 4.2.1 IOS Untethered com Redsn0w 0.9.7b1

  8. @Luigi

    Well, BETA (in progress) untethered for your device, yes. Download the latest Redsn0w beta and follow the instructions or just wait for the official release.

  9. I did run the process and everything was OK but the phone keep rebooting it self anyones knows why?

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