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Guide to Root Android 2.2.1 (FRG83) on Google Nexus One without Unlocking Bootloader

CLShortFuse at xda-developers managed to create another 1-click root for Android 2.2.1 (FRG83) on Nexus One. Previously rooting on Android 2.2 (FRF91) was possible with Universal Androot which is a 1-click root app for Nexus One, HTC Hero, HTC Magic, Motorola Milestone, Motorola Droid, Dell Streak and many other Android phones.

Steps to Root Android 2.2.1 (FRG83) on Google Nexus One

  1. First of all you need to setup ADB and install Android USB drivers on Windows.
  2. Inorder to setup ADB, download Android SDK from here and JDK 6 from here.
  3. Install JDK 6 you downloaded in previous step.
  4. Extract android-sdk_r07-windows.zip in (C:) drive such that android-sdk-windows directory in (C:) drive contains SDK Manager.exe.
  5. Launch SDK Manager.exe, navigate to Available Packages, select USB Driver Package and click on Install Selected button.
  6. Navigate to My Computer (Icon)->Properties (Link)->Advanced System Settings (Link)->Advanced (Tab)-> Environment Variables (Button)->System variables (Section)->Path (Variable)-> Edit (Button)-> Variable value. Enter the following value as shown in the screenshot.
  7. C:\android-sdk-windows\tools

    Android SDK Path Set

  8. Connect your phone in USB debugging mode and let the Windows install the USB drivers for your device.
  9. Thats it! You are done with the ADB part.
  10. Download RageAgainstTheCageGUI-ShortFuse.zip from here and extract it in the tools folder located in android-sdk-windows directory in (C:) drive.
  11. Run RageAgainstTheCageGUI.exe and click on the Go button to root your Nexus One.
  12. RageAgainstTheCageGUI

  13. To test your phone whether its rooted or not? Open command prompt and use the following commands.
  14. adb shell
    su

    Nexus One Android 2.2.1 Root

Note: Use the above guide at your own risk. We will not be responsible for any damage done to your device after following the above guide. This guide is for educational purpose only.

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36 comments
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  •  
    Anthos5 years, 7 months ago

    Worked after unmounting the SD card.

  •  
    Anderson5 years, 8 months ago

    Please!!!

    I’d like to know if does it work with my LG P500 Optimus One With Google Android 2.2.1 (FRG83) V10a???
    I tried to use ZMod (ZRoot) and it didn’t work. Is there any risk by trying to do this proceedure???
    Thanks.

  •  
    Jon5 years, 10 months ago

    Doesn’t work for me. Something is missing on my computer. I get “System.ComponentModel.Win32Exception: The system cannot find the file specified” and a stacktrace.

  •  
    Tim5 years, 11 months ago

    hi,
    how is it possible to unroot – Root access reset

    Regards
    Tim

  •  
    Tim5 years, 11 months ago

    Hi Guys,
    I just want to give Droidwall root rights. How can I make this on my N1?

    Regards
    Tim

  •  
    Hanthuy6 years ago

    Thank you so much.
    It’s work like a charm in my phone :))

  •  
    Sean6 years ago

    I hate to the “that guy” but it worked fine for me. Thanks!

  •  
    david6 years ago

    Help, this show at the end of the rageagainstthecageGUI. What seems to be the problem? Hoping for your response. Thanks!

    Getting mount path…
    /dev/block/mtdblock3
    OK

    Remounting system with read-write access…
    mount: Operation not permitted

    FAILED

    •  
      shailesh6 years ago

      david,

      i faced same issue

      i just restarted phone and ran pressed the Go.. it worked..:)

    •  
      TG5 years, 6 months ago

      Make sure to turn on the USB Mass storage on the phone after plugging in the USB cable.

  •  
    bogeek6 years, 1 month ago

    Awesome solution!!!
    Just re-rooted again my Nexus One 2.2.1.

    Thanks a lot!!!

  •  
    Paul Teale6 years, 1 month ago

    Well it go a little further but then failed.
    Here is the output..

    Getting mount path…
    /dev/block/mtdblock3
    OK

    Remounting system with read-write access…
    mount: Operation not permitted

    FAILED

    •  
      Wolverine6 years, 1 month ago

      Download the VISIONary app from the Market. It works on device. [Thanks to Vonix]

      •  
        vonix6 years, 1 month ago

        hey, this is what i wrote tonight!! wtf??

        •  
          Wolverine6 years, 1 month ago

          Hahahaha! Sorry man, i forgot to give credit =P Thankyou anyways :)

          •  
            vonix6 years, 1 month ago

            no problem man :), i was just wondering

    •  
      shailesh6 years ago

      i faced same issue of
      Getting mount path…
      /dev/block/mtdblock3
      OK

      Remounting system with read-write access…
      mount: Operation not permitted

      i just restarted phone and ran pressed the Go.. it worked..:)

  •  
    rubi6 years, 1 month ago

    Found the solution for ‘getting mount path’ problem.
    Turn off your Nexus one but leave it with usb plugged in.
    Open Rage against the cage program – click GO
    Turn on your N1.
    wait.

    •  
      Wolverine6 years, 1 month ago

      Thankyou Rubi for sharing the solution with us! =)

    •  
      Paul Teale6 years, 1 month ago

      Thanks Rubi, I’ll give that a try

    •  
      will6 years, 1 month ago

      you are awesome!

    •  
      ramchagol5 years, 11 months ago

      turning off does not work. it won’t detect your phone.

      it’s the memory card. remove the memory card, and try again.

      worked for me.

  •  
    Paul Teale6 years, 1 month ago

    This doesn’t work. Just gets to getting mount path then freezes.

    •  
      Wolverine6 years, 1 month ago

      Looks like Rubi (Comment Below) found the solution to the problem =)

  •  
    Akhil6 years, 1 month ago

    Hey…
    I rooted my device finally… now how to install cyanogen mod in this…am still have 4 options
    DONT HAVE CHOOSE FROM SD CARD
    Reboot system now
    apply sdcard:update.zip
    wipe data\factory reset
    wipe cache partition
    Dont have any option apart from this.

    •  
      Wolverine6 years, 1 month ago

      Options depend upon what kind of “Recovery” image you are using. As the above one is stock recovery, so you can choose apply sdcard:update.zip and for that you must have a file named “update.zip” in your SD card. If you have Amon_Ra’s Recovery, you can choose from ZIP files in your SD card.

      •  
        Akhil6 years, 1 month ago

        HEY THANKS LOT MAN…I GOT CYNOGEN INSTALLED. THANKS VERY VERY MUCH

  •  
    Akhil6 years, 1 month ago

    hey Hi…
    I gave command “adb reboot bootloader” i got in to bootloader when i pressed recovery am getting exlamation mark with android and when i press power button with volume up am able to get in to “android system recovery 3e but there is only 4 options.
    Reboot system now
    apply sdcard:update.zip
    wipe data\factory reset
    wipe cache partition
    Dont have any option apart from this.

  •  
    Chris Poon6 years, 1 month ago

    I could perfectly change to rooted at 2.2.1.
    However, I can not using OPENVPN apps. no responese at all. Please check

    •  
      Akhil6 years, 1 month ago

      Hey… Am using nexus one…my build was FRF91 before. I Got OTA update 2.2.1 when i updated it, am not able to install custom rom on my nexus one and also am not able to get in to Hboot. Please Please Suggest… I did all the above procedure. Please kindly help!

      •  
        Wolverine6 years, 1 month ago

        Upgrading to Android 2.2.1 OTA will unroot your device of course. Use the above procedure to root your Nexus One. I am not sure why you are unable to access HBOOT. adb reboot bootloader in ADB might help you.

  •  
    swatcat5106 years, 1 month ago

    Whats the name of the song thats playing in the bakground? Great vid by they way.

  •  
    chrisonline6 years, 1 month ago

    I am stuck at “getting mount path”!
    Whats wrong?

    •  
      Wolverine6 years, 1 month ago

      Are you sure you have installed ADB fine? Type adb devices in command prompt and see if your device is listed or not?
      P.S: I have tested the above procedure and it worked 100% fine.

      •  
        will6 years, 1 month ago

        i’m also stuck at “getting mount path”, i’ve typed in adb devices in the command prompt and a serial number does come up. rage application just freezes when getting mount path comes up…

        •  
          Anthos5 years, 7 months ago

          Same issue; ADB devices list the device.

          I had to include “C:\android-sdk-windows\platform-tools” to the path as well to resolve “The system cannot find the file specified” issue.