[ROOT] Root for SHIELD Tablet 2.0 (Lollipop)

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SuperPichu

Senior Member
Jun 19, 2010
201
175
Columbus
I am not responsible if anything goes wrong.
Post any questions here: [Q&A][ROOT] Root for SHIELD Tablet 2.0 (Lollipop)


Pre-requisites:
  • Already flashed OTA 2.0 (Unless bootloader is locked in which case read instructions for locked bootloader.)
  • Unlocked bootloader and flashed CWM from here
  • SuperSu zip file from here
  • PC with working adb and fastboot

Instructions (Unlocked bootloader):
  1. Reboot tablet into recovery mode
    Code:
    adb reboot recovery
  2. Flash SuperSu zip file with CWM
  3. Reboot tablet
    If CWM asks to fix root, say yes.
  4. Profit.

Optional Reinstall CWM (The OTA removes it)
  1. Flash via fastboot
    Code:
    fastboot flash recovery recovery.img
    May need to flash a couple of times to get it to stick.
  2. Reboot tablet

Instructions (Locked bootloader):
  1. Download update but DO NOT UPDATE YET
  2. Gain root on previous build via towel root.
  3. Flash CWM from link in prereqs via Flashify
  4. In CWM choose update from zip and choose the zip file in the bottom of your 'nvidia' folder on your internal storage (/sdcard/). DO NOT REBOOT
  5. Flash SuperSu zip file with CWM
  6. Reboot tablet
    Don't reboot if you want to reinstall CWM below
  7. Profit.

Optional Reinstall CWM
  1. Copy CWM to root of internal storage
    Code:
    adb push recovery.img /sdcard/
  2. Flash via adb shell
    Code:
    adb shell 
    mount /data
    dd if=/data/media/0/recovery.img of=/dev/block/platform/sdhci-tegra.3/by-name/SOS

    If the mount commands errors with device or resource busy just skip it and move on.​
  3. Reboot tablet
 
Last edited:

nnssxx

Member
Oct 12, 2010
39
24
that was quick, thanks!
worked perfectly on Shield Tablet WiFi (LRX21M) with unlocked bootloader.
 
Last edited:

Horvaticus

Senior Member
Jan 9, 2012
90
9
Seattle
Thanks for the guide. Hopefully this is just me being stupid, but I ran into some issues following the guide. I rooted via TowelRoot, and then downloaded the OTA without flashing it. After using Flashify to install the CWM image, and installing the OTA via CWM, I'm unable to boot into the recovery image anymore. I can't boot into it through the hardware key combo, and I can't boot into it through ADB.

I'm following the locked bootloader steps, if it helps.

Edit: Nevermind, unlocked the Bootloader is by far the easiest option.
 
Last edited:

SuperPichu

Senior Member
Jun 19, 2010
201
175
Columbus
Thanks for the guide. Hopefully this is just me being stupid, but I ran into some issues following the guide. I rooted via TowelRoot, and then downloaded the OTA without flashing it. After using Flashify to install the CWM image, and installing the OTA via CWM, I'm unable to boot into the recovery image anymore. I can't boot into it through the hardware key combo, and I can't boot into it through ADB.

I'm following the locked bootloader steps, if it helps.

What is happening instead of it booting?
 

PuffinNugz

Senior Member
Aug 3, 2010
1,155
307
Indy
What about if we had already updated to L, but had never unlocked the bootloader? I was rooted before with towel root, but never actually unlocked boot. Does the unlocking method still work? Or am I SOL for now?
 

SuperPichu

Senior Member
Jun 19, 2010
201
175
Columbus
What about if we had already updated to L, but had never unlocked the bootloader? I was rooted before with towel root, but never actually unlocked boot. Does the unlocking method still work? Or am I SOL for now?

Yes the unlocking method still works. It is not an exploit it is officially "supported" by Nvidia. See here

As mentioned below unlocking will wipe all data.
 
Last edited:
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Harfainx

Retired Forum Moderator
Apr 10, 2010
1,658
1,803
What about if we had already updated to L, but had never unlocked the bootloader? I was rooted before with towel root, but never actually unlocked boot. Does the unlocking method still work? Or am I SOL for now?

I don't think it should be any different. They didn't encrypt it or anything. Unlocking should be possible with just doing an oem unlock. Of course this will wipe your data, so be sure to do a backup. ;)
 
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garyd9

Inactive Recognized Developer
Sep 13, 2006
2,643
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Pittsburgh, PA
For the "locked" method, you might want to suggest re-flashing CWM recovery (if desired) afterwards. The partition name is SOS.
 

SuperPichu

Senior Member
Jun 19, 2010
201
175
Columbus
I'm having the same problem just flashing the recovery. Fastboot says it flashed ok, but when I reboot into recovery I get the android on his back with the red triangle.

I assume you are using the unlocked instructions? Try flashing it a couple of times. Mine was doing the same thing at first. You can also try the CWM flashing instructions for locked as that may "stick" better.
 
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  • 45
    I am not responsible if anything goes wrong.
    Post any questions here: [Q&A][ROOT] Root for SHIELD Tablet 2.0 (Lollipop)


    Pre-requisites:
    • Already flashed OTA 2.0 (Unless bootloader is locked in which case read instructions for locked bootloader.)
    • Unlocked bootloader and flashed CWM from here
    • SuperSu zip file from here
    • PC with working adb and fastboot

    Instructions (Unlocked bootloader):
    1. Reboot tablet into recovery mode
      Code:
      adb reboot recovery
    2. Flash SuperSu zip file with CWM
    3. Reboot tablet
      If CWM asks to fix root, say yes.
    4. Profit.

    Optional Reinstall CWM (The OTA removes it)
    1. Flash via fastboot
      Code:
      fastboot flash recovery recovery.img
      May need to flash a couple of times to get it to stick.
    2. Reboot tablet

    Instructions (Locked bootloader):
    1. Download update but DO NOT UPDATE YET
    2. Gain root on previous build via towel root.
    3. Flash CWM from link in prereqs via Flashify
    4. In CWM choose update from zip and choose the zip file in the bottom of your 'nvidia' folder on your internal storage (/sdcard/). DO NOT REBOOT
    5. Flash SuperSu zip file with CWM
    6. Reboot tablet
      Don't reboot if you want to reinstall CWM below
    7. Profit.

    Optional Reinstall CWM
    1. Copy CWM to root of internal storage
      Code:
      adb push recovery.img /sdcard/
    2. Flash via adb shell
      Code:
      adb shell 
      mount /data
      dd if=/data/media/0/recovery.img of=/dev/block/platform/sdhci-tegra.3/by-name/SOS

      If the mount commands errors with device or resource busy just skip it and move on.​
    3. Reboot tablet
    6
    I'm not going to lie. And i'm going to be blunt here but

    I HAVE ABSOLUTELY NO IDEA ON HOW TO ROOT THIS DEVICE. ABSOLUTELY NONE. I AM EXTREMLY CONFUSED BY THE DIRECTIONS, AND WOULD LIKE HELP. I DONT MEAN TO BE RUDE, BUT I AM PULLING MY HAIR OUT AS WE SPEAK


    Download everything in the first post and the posts it links to. If you don't need it, you can delete it later.

    You unlocked the bootloader, so moving on.

    Copy the lollipop update and SuperSU zip to your sdcard.
    Unzip the root-boot.zip on the computer.

    Turn off your tablet.
    Hold down volume down and tap power while keeping volume down held.
    You will see a lot of small text. This is bootloader mode.
    Plug the usb cable into the computer.
    Open up a terminal window / command prompt and cd to the place you downloaded everything.
    Type
    Code:
    fastboot flash recovery recovery.img
    Wait for it to finish
    You flashed CWM.
    Type
    Code:
    fastboot flash boot root-boot.img
    You flashed the kernel
    Now use the volume keys to select reboot recovery and click power.

    Once in recovery, choose install from sdcard.
    Find the lollipop update and install it.
    Choose install from last installed location.
    Install the SuperSU zip.
    Choose reboot system.

    Proceed to the Q & A for additional questions about your rooted device.
    6
    Also, big thanks to @SuperPichu for being so helpful. Most of your questions have been about drivers or people not comfortable with adb. You have been very patient with the users. And I respect that. I'm glad we have you in the dev community for this device.

    Agree with that statement. SuperPichu, to save your time, why don't you update the instructions to be a 'root for dummies' like :).
    Thanks for the kind words.

    The reason I don't make the instructions "for dummies" is that no matter how many easy questions I have to answer, if even one person figures it out on their own and learns something, it's worth it.


    Sent from my SHIELD Tablet using XDA Free mobile app
    4
    Thread cleaned
    If 2 people want to selfishly take up everyone's time on this thread, there will be repercussions
    Take personal issues to PMs and keep it within the rules and professionalism there
    Other option is to add each other to your ignore user list
    Now back on topic
    FNSM
    3
    I bit the bullet and just unlocked the bootloader being in lollipop. Thing was mostly hassle free using Helium backup. So I'm finally rooted and with a custom recovery. I don't see the need right now for custom roms really. Just wished we could calibrate the screen so colors weren't so warm.

    Enviado desde mi SHIELD Tablet mediante Tapatalk


    Once I get my hands on the source for the 5.0 kernel, that shouldn't be too hard