How To: Jailbreak iOS 5.0.1 On iPhone 4, iPhone 3GS With RedSn0w 0.9.9b9 [Windows]

Windows users can rejoice! The iPhone Dev-Team have released a new version of RedSn0w dubbed RedSn0w 0.9.9b9 for the Windows operating system. In this new version of RedSn0w users can Jailbreak the iOS 5.0.1 firmware without having to point RedSn0w to the iOS 5.0 firmware. Additionally, RedSn0w 0.9.9 beta 9 for Windows will fix the iBooks crashing error on Jailbroken iDevices.

As the Jailbreaking process has changed while using RedSn0w 0.9.9b9, we will be covering how to Jailbreak tethered your iPhone 4 and iPhone 3GS running the iOS 5.0.1 firmware using RedSn0w 0.9.9b9 on the Windows operating system.

RedSn0w 0.9.9b9 Windows Jailbreak iPhone

Step 1) – Download RedSn0w 0.9.9b9 for Windows using the download mirror below or through the iJailbreak Downloads Section.

Download RedSn0w 0.9.9b9 (Windows)

Step 2) – Once you have downloaded RedSn0w 0.9.9b9 you will need to launch it by double clicking on the redsn0w shortcut.

Step 3) – With RedSn0w up and running you will need to click the Jailbreak Button.

Step 4) – After clicking the Jailbreak button ensure that the “Install Cydia” option is checked, click the Next button and you will come to a screen where you will need to put your iPhone into DFU mode. Read through and follow the instructions presented to you which is to plug in and power off your iPhone and click the next button.

Step 5) – When you click the next button you will need to follow the instructions presented to you to actually put your iPhone into DFU mode.

  • Hold down Power (corner) button for 5 seconds.
  • Without releasing the Power button, also hold down the Home (bottom center) button along with the Power button for 10 seconds.
  • Without releasing the home button, stop holding down the power button for up to 15 seconds.

Step 6) – After you successfully enter DFU mode RedSn0w 0.9.9b9 will begin jailbreaking the iPhone. DO NOT interrupt or use the computer during this time. When the iPhone is finished being jailbroken it will reboot into a jailbroken state.

Optional: Booting Tethered – When you Jailbreak the iPhone running the iOS 5.0.1 firmware you will have a tethered Jailbreak. Meaning in order for your iPhone to turn back on you will simply need to boot it using RedSn0w (this applies every time your iPhone loses power). To do this launch RedSn0w again and click the Extras Button > then click the Just boot button and you will need to put the iPhone into DFU mode again.

Note: Yes, you need to do this every time the iPhone loses power.

Optional: SemiTethered Jailbreak – Though you have now Jailbroken your iPhone tethered on the iOS 5.0.1 firmware, you can actually SemiTether your iPhone. SemiTethering your iPhone basically means that you will be able to still use it if it ever loses power (with limited functionality). In order to SemiTether your iPhone you will need to add the following repository through Cydia:

Then search for the SemiTether Cydia package, install it and reboot your iPhone (yes, you will need to boot tethered again). If you are looking for a more detailed guide please click here.

Congratulations! You should now have a jailbroken iPhone 4, iPhone 3GS running the iOS 5.0.1 firmware and fixed the iOS 5 iBooks crashing error. For more tutorials visit the How To Jailbreak Section. Leave any questions in the comments section below…

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  • LEO

    trying it right now will c how it turns out.thx alot for the guide (y)

  • Jeffrey

    can i use the Optional: SemiTethered Jailbreak on my iphone4 and tethered 4.3.5 jailbreak?

  • Hong6571

    no untethered? 

  • LEO

    jailbroken the iphone 3GS baseband 05.16.05 no problems ,everything works perfectly, so far…had a problem with cydia it was white.
    did a reboot through redSnow and everything works Perfectly right now.

    thanks a lot!

  • Uguha

    The Cydia simply doesnt get installed. The baseband doesnt change to the original. And the iphone still doesnt work.

  • MSC

    bricked 3 times lol :D guess its my iphone back to 0.9.9.b8 

  • Tim

    hey guys!
    i have a small problem.
    when i go into DFU mode, redsnow gives me an error report telling me that there is an error with the shsh blobs!
    can someone please tell me what i am doing wrong!
    i have a iphone 3gs and i am definitly runing on firmware 5.0.1!
    thanks for any help!

  • Tim

    ok resolved it myself!
    firewall being overprotective :)

  • jeff

    ibooks still crashing tho

  • 727

    thnx so much cydia is installed but there is only 9 pakages!! and ther is nthn to install like semitetherd or any thing! can u help

  • 727

    ok nvm thnx its done i make it :)

  • Eddie

    Hi Leo, I have a iphone 3GS baseband 05.16.05 same as yours. I just wondering did it unlock your sim? I bought it in Japan, and I can’t use Hong Kong’s sim card. Do you have any clue? Thanks