[Complete Guide] SHIELD Tablet K1 Root, Custom Rom and Xposed Framework

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Toby4213

Senior Member
Jan 9, 2015
50
63
Hello Guys,

At first a little background story:
I bought the Tablet 3 Month ago. I have got the Update to Android 6.0 in January and unfortunately, I applied it.
So If you don't want to apply a custom rom do not update to 6.0, because 5.1.1 is much better.

I am not responsible if anything goes wrong.
Ok, so let's get started:
At first you must install Minimal ADB and Fastboot on your PC/Laptop/Mac.
Windows: https://forum.xda-developers.com/showthread.php?t=2588979
Linux/Mac: http://rootmygalaxy.net/install-adb-and-fastboot-on-mac-or-linux/
Here is the link for all OSs: http://lifehacker.com/the-easiest-way-to-install-androids-adb-and-fastboot-to-1586992378
Before you can Root or flash a Custom Rom you must flash the recovery:
You will need:
-Nvidia Family Drivers(Extract it in a folder of your choice): http://nvidiashieldzone.com/files/shieldtv/shieldfamilydriver.zip not working anymore, official link:
http://developer.download.nvidia.com/mobile/shield/SHIELD_Family_WHQL_USB_driver_201801.zip
-As many of you are experiencing problems with my previously mentioned TWRP 2.8.7.3 version I am replacing the link with the official TWRP Shield Tablet Download Site. Just take the newest stable version: https://dl.twrp.me/shieldtablet/ (Put the file into the ADB+Fastboot Folder)
-TWRP 2.8.7.3 Recovery(Put the file into the ADB+Fastboot Folder): Download URL: https://www.androidfilehost.com/?fid=24269982087009777
Developer Post: http://forum.xda-developers.com/shi...recovery-twrp-2-8-7-0-touch-recovery-t3257172

Install the Drivers

Connect your Tablet to your PC

Windows:
Open your Device Manager
If there Is a device with a yellow ! klick on it and update the Drivers Manually(select the Folder where you extracted the Family Divers)
Linux:
You don't need any drivers
(For every fastboot command in ADB+Fastboot you will need a "sudo" in front of it...)
Mac:
You also don't need any drivers
(For every fastboot command in ADB+Fastboot you will need a "./" in front of it...)

Flash Recovery
1. Open Minimal ADB and Fastboot
2. Type in
Code:
adb devices
if you get a long term of numbers and letters your drivers are correctly installed, If this command does not bring up a device, check your cable connection and/or update your drivers again.
3. Now you must enable developer options on your SHIELD Tablet K1
3.1 Go to your Setting, scroll all the way down and choose Info(or similar)
3.2 Tap seven times on the Build Number
3.3 Now go back and now there is a new menu point Developer Options
3.4 Open them and Enable USB Debugging
4. Now type
Code:
adb reboot bootloader
EDIT: 4.1 To enable the fastboot protocol, you must select "Fastboot mode" on the Tablet. After that type
Code:
fastboot devices
in order to check if fastboot is enabled.
5. Before you can do anything you must unlock the Bootloader
5.1 Type in
Code:
fastboot oem unlock
5.2 Follow the Instructions on the Terminal(On your tablet: press the volume down button and then the power button)
6. Now you are ready to flash the recovery
6.1 Type in
Code:
fastboot flash recovery twrp-x.x.x-x-shieldtablet.img
6.2 Wait until it is finished then navigate with the volume buttons through the Menu on your Tablet and choose the option recovery mod with you power button
7. You are now in a custom Recovery on this point you must decide what you want to do:
-Do you only want to root your Device
-Or do you want to install a custom rom

Custom Rom
If you want to be on the safe side you should consider wiping the /data partition (Troubleshoot section at the end of the Post)
1. You can access your tablet from your PC
2. Now move your Custom rom to your internal or SD Card Storage
2.1 Download your custom rom of your choice.
2.1.1 Cyanogenmod 12.1 (Android 5.1.1) and BlissPop v4.0.3 https://www.androidfilehost.com/?w=files&flid=150249
2.1.2 Cyanogenmod 13.0 (Android 6.0) https://androidfilehost.com/?w=files&flid=27600&sort_by=date&sort_dir=DESC
2.1.3 Nvidia Shield Tablet Resurrection ROM (Android 6.x) https://androidfilehost.com/?w=files&flid=60681&sort_by=date&sort_dir=DESC
2.1.4 BlissPop
2.2 Download Google Apps (Gapps) (ARM Device)
2.2.1 Android 5.1 http://opengapps.org/?api=5.1&variant=stock
2.2.2 Android 6.0 http://opengapps.org/?api=6.0&variant=nano
2.3 Download Nvidia Apps (You still need to install Nvidia Shield HUB from the Play Store)http://forum.xda-developers.com/shield-tablet/development/shield-apps-cyanogenmod-12-t3070116
3. In TWRP click on Backup and Swipe to Back Up
3.1 Now go to Wipe. For a dirty flash you will only need to wipe the Dalvik and Cache for a full wipe select Dalvik, System, Data, Cache
4. After it has finished Click on Install and choose the .zip of your Custom Rom
4.1 To install the Google Apps click on Add More Zips and select the GApps zip
4.2 And again click on Add More Zips and select nvsystemservices.zip
4.3 now you can Swipe to Confirm Flash

Root
Download the Latest Stabel SuperSU file: http://download.chainfire.eu/supersu-stable and copy it to the internal or SD Card Storage
For Android 7.0 (Nougat) the SuperSU r4 2.78 version is confirmed working.
1. Open Minimal ADB and Fastboot
2. Type in
Code:
adb reboot recovery
to enter the recovery mode
3. In TWRP click on Backup and Swipe to Back Up
4. After it has finished Click on Install and choose the UPDATE-SuperSU-v2.65-20151226141550.zip (or similar) and Swipe to Confirm Flash
5. Restart you Tablet and now a new App SuperSU is Installed

Xposed Framework
Download the Xposed Framework Zip file, take the newest version:
(The Shield Quad Core has a 32 bit arm architecture, so you need the framework for arm)
SDK21 for Android 5.0: http://dl-xda.xposed.info/framework/sdk21/arm/
SDK22 for Android 5.1: http://dl-xda.xposed.info/framework/sdk22/arm/
SDK23 for Android 6.0: http://dl-xda.xposed.info/framework/sdk23/arm/
and the apk: https://forum.xda-developers.com/attachment.php?attachmentid=3921508&d=1477916609
and move them to you Tablet.
Developer Thread (for the uninstaller): https://forum.xda-developers.com/showthread.php?t=3034811
Go to Recovery with Root
1. Now that you have root you don't need you PC anymore. Go to the Play store and download Quick Boot
2. Open Quick Boot and klick on Recovery
3. Allow Root rights and the Tablet should boot into recovery
Go to Recovery without Root
1. Shut down your Tablet
2. Press and hold the Vol down button and the Power button until the Bootloader screen appears
3. Navigate with the volume buttons through the Menu on your Tablet and choose the option recovery mod with you power button
Install Xposed Framework
1. In the TWRP Recovery (Optionally you can make a Backup) select Install and choose the xposed-v80-sdk22-arm.zip file
2. When you get an Error let me know
3. Now Restart you Tablet and install the .apk file normally
4. In the App Press Framework and now there should be a green writing saying: Xposed Framework version 80 is active
5. Here is a list of very useful programs for the Xposed Framework: http://forum.xda-developers.com/android/general/best-xposed-modules-android-t3103027

Please Leave a post if you are getting errors or something isn't clearly explained! And if I could help you, consider giving me a Thanks ;)

Troubleshoot
If you are stuck in a Bootloop:
Without data loss(e.g. when you installed Xposed framework zip and its stuck in a bootloop)
1. flash the stock rom boot image BUT ONLY IF YOU DONT USE A CUSTOM ROM (it will probably loose root). go to https://developer.nvidia.com/gameworksdownload#?search=SHIELD Tablet K1&tx=$additional,shield and download the latest NVIDIA SHIELD Tablet K1 Recovery OS Image
2. Unpack the zip file and flash it to your Tablet
Code:
fastboot flash boot boot.img
If something went wrong while flashing a custom rom (after that you will need to flash the custom/stock rom again)
wipe the /data partition. It could be encrypted from the previous rom. Be aware that you need to reinstall the rom, therefore loose all your data. Troubleshot guide by agentbob123


-Toby

Credits:
@xsquid mac support
@agentbob123 suggestion to mention to wipe the /data partition as a solution for being stuck in a bootloop
@champs777 suggested the newest TWRP
@grävling mentioned importance of waiting until the recovery flash is finished
 
Last edited:

nielsscholte

Senior Member
Jun 5, 2013
309
106
Hello Guys,

At first a litte background story:
I bought the Tablet 3 Month ago. I have got the Update to Android 6.0 in January and unfortunately i applied it.
So If you don't want to apply a custom rom do not update to 6.0, because 5.1.1 is much better.

Ok, so let's get started:
I am not responsible if anything goes wrong.
At first you must install Minimal ADB and Fastboot on your PC/Laptop/Mac.
Here is the link for all OSs: http://lifehacker.com/the-easiest-way-to-install-androids-adb-and-fastboot-to-1586992378
Before you can Root or flash a Custom Rom you must flash the recovery:
You will need:
-Nvidia Family Drivers(Extract it in a folder of you choice): http://nvidiashieldzone.com/files/shieldtv/shieldfamilydriver.zip
-TWRP 2.8.7.3 Recovery(Put the file into the ADB+Fastboot Folder):
Download URL: https://www.androidfilehost.com/?fid=24269982087009777
Developer Post: http://forum.xda-developers.com/shi...recovery-twrp-2-8-7-0-touch-recovery-t3257172
Install the Drivers

Connect your Tablet to your PC

Windows:
Open your Device Manager
If there Is a device with a yellow ! klick on it and update the Drivers Manually(select the Folder where you extracted the Family Divers)
Linux:
You dont need any drivers
(For every fastboot command in ADB+Fastboot you will need a sudo in front of it...)
Mac:
2016/02/16 Please leave a post if you how to do this

1. Open Minimal ADB and Fastboot
2. Type in
Code:
adb devices
if you get a long term of numbers and letters your drivers are correctly installen, If this command does not bring up a device, check your cable connection and/or update your drivers again.
3. Now you must enable developer options on your SHIELD Tablet K1
3.1 Go to your Setting, scroll all the way down and choose Info(or similar)
3.2 Tap seven times on the Build Number
3.3 Now go back and now there is a new menu point Developer Options
3.4 Open them and Enable USB Debugging
4. Now type
Code:
adb reboot bootloader
5. Before you can do anyting you must unlock the Bootloader
5.1 Type in
Code:
fastboot oem unlock
5.2 Follow the Instructions on the Terminal(On your tablet: press the volume down button and then the power button)
6. No you are ready to flash the recovery
6.1 Type in
Code:
fastboot flash recovery twrp-2.8.7.3-shieldtablet.img
6.2 Wait until it is finished then move with the volume buttons through the Menu on your Tablet an choose the option recovery mod with you power button
7. You are now in a custom Recovery on this point you must decide what you want to do:
-Do you only want to root your Device
-Or do you want to install a cutom rom

Custom Rom
1. You can access your tablet on your pc
2. Now move your Custom rom to your internal or SD Card Storage
2.1 Download your custom rom of your choice. I decided to use Cyanogenmod 12.1 (Android 5.1.1) http://forum.xda-developers.com/shi...-cyanogenmod-12-shield-tablet-lte-na-t3055043
2.2 Download Google Apps (Gapps) (ARM Device) http://opengapps.org/?api=5.1&variant=stock
2.3 Download Nvidia Apps (You still need to install Nvidia Shield HUB from the Play Store)http://forum.xda-developers.com/shield-tablet/development/shield-apps-cyanogenmod-12-t3070116
3. In TWRP click on Backup and Swipe to Back Up
4. After it has finished Click on Install and choose the .zip of your Custom Rom
4.1 To install the Google Apps click on Add More Zips an select the GApps zip
4.2 And again click on Add More Zips and select nvsystemservices.zip
4.3 now you can Swipe to Confirm Flash

Root
Download the Latest Stabel SuperSU file: http://download.chainfire.eu/supersu-stable and copy it to the internal or SD Card Storage
1. Open Minimal ADB and Fastboot
2. Type in
Code:
adb reboot recovery
to enter the recovery mode
3. In TWRP click on Backup and Swipe to Back Up
4. After it has finished Click on Install and choose the UPDATE-SuperSU-v2.65-20151226141550.zip (or similar) and Swipe to Confirm Flash
5. Restart you Tablet and now a new App SuperSU is Installen

Please Leave a post if you are getting errors or someting isn't clearly explaned!


-Toby

My tablet just keeps rebooting to the lock screen whenever I try to go to recovery mode... Somehow twrp doesn't stick... It did when I was on Lollipop. I have already tried to flash the recovery, do a full reboot before trying to get in twrp but without success.
 

Toby4213

Senior Member
Jan 9, 2015
50
63
My tablet just keeps rebooting to the lock screen whenever I try to go to recovery mode... Somehow twrp doesn't stick... It did when I was on Lollipop. I have already tried to flash the recovery, do a full reboot before trying to get in twrp but without success.

Try other TWRP versions like 2.8.7.0 or 2.8.7.1 i think the 3.0.0.0 is for Andoid 6.0 devices so if you are currently in the newest version of the Android OS try this one out
The 3.0 versionof TWRP was unstabel on my device so you should flash it wipe the storage and flash one of the older ones
 

xsquid

Member
Nov 22, 2011
33
4
San Martin Toltepec
My tablet just keeps rebooting to the lock screen whenever I try to go to recovery mode... Somehow twrp doesn't stick... It did when I was on Lollipop. I have already tried to flash the recovery, do a full reboot before trying to get in twrp but without success.

3.0.0.0 wasn't out yet when I did mine but it was doing the same thing and this worked perfectly:

Try deleting recoveryonboot.p in /system

Credit to fards.
 

xsquid

Member
Nov 22, 2011
33
4
San Martin Toltepec
How can I remove this file without root ?

Try your normal command line for flashing recovery except change flash to boot. It doesn't flash it, just boots to it.

In other words, if you are using:

1. Fastboot Flash recovery recoveryname.img

Do instead:

2. Fastboot boot recovery recoveryname.img

While in recovery (make sure the supersu zip is on the sd card or wherever you normally flash files from first) flash supersu. You should now be rooted but without a recovery.

Go then to delete the file and then reboot, flash the recovery as normal (#1), reboot and then it should be good to go. It was for me.
 
Last edited:
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cacaroti

New member
Feb 22, 2016
2
0
rooted device no need to unlock bootloader it will unlock for ittself

just go to playstore and dowload twrp manager
choose the name of your device
and choose one of the two versions available
for shield tablet the version 3.0.0.0 doesnt work well it spilts the screen but wthe other version Works great

the link is twrpmanager on play.google


this way you dont need to connect your tablet to your pc
 

LinxuSx

Senior Member
Apr 16, 2011
87
18
Thank you for the awesome guide. Besides deleting the TegraOTA apk, is there any other app/service that I should disable to prevent OTA updates?
 

diji1

Senior Member
Aug 26, 2006
132
17
Adelaide, SA
Followed the guide after screwing my device up with official firmware. Thanks for nothing Nvidia, why are you offering OTA that cause the device to stop working correctly.

Nothing happened other than appearing to boot itself to the "powered by android" (kernel) screen over and over.

Held down power + volume UP ...

And it factory reset itself.

Somehow.

Did I mention that Nvidia is a terrible company?

Edit: Fixed using TWRP v3.0.0 - this guide should be updated to reflect this particuarly as people who screw their device up after trusting Nvidia OTA MM will be using it.
 
Last edited:
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Toby4213

Senior Member
Jan 9, 2015
50
63
Followed the guide after screwing my device up with official firmware. Thanks for nothing Nvidia, why are you offering OTA that cause the device to stop working correctly.

Nothing happened other than appearing to boot itself to the "powered by android" (kernel) screen over and over.

Held down power + volume UP ...

And it factory reset itself.

Somehow.

Did I mention that Nvidia is a terrible company?

Edit: Fixed using TWRP v3.0.0 - this guide should be updated to reflect this particuarly as people who screw their device up after trusting Nvidia OTA MM will be using it.

I'm sorry that you had that problem but this guide is a general guide and not an screw nvidia (besides they are awesom giving us a really good tablet for 200 Buck, but jea?) guide. TWRP v3.0.0 has his bugs so generally when you have finished deleting the stock rom you should flash TWRP 2.8.7.3 works the most stabel.
 

psychic99

Member
Jan 31, 2012
46
20
Google Pixel
Add TWRP to M image (Shield 1.1)

Folks,

Just received Nvidia Shield K1 and OTA immediately upgraded it to M (Shield 1.1) and I unlocked bootloader no problem. However when I go to flash or temp boot twrp 2.x or 3.x it flashes OK, but when I reboot (either via fastboot or hard off/start to recovery manually) it appears it is overwriting the recovery partition and it just boots normally.

Is there a limitation to flashing twrp bootloader in M, and do I have to downgrade to L to flash recovery partition?

I seem to be happy w/ stock (limited stick time), I just want to root at this point and install my favs. Once I get this running will supersu pro preserve root, or do I need to turn off nvidia OTA process.

Also I see optimization for chrome, does this do anything X1 optimizations)?

Thanks
 

trveller72

Senior Member
Nov 2, 2009
300
81
Dublin
OnePlus X
Nokia 7 Plus
Folks,

Just received Nvidia Shield K1 and OTA immediately upgraded it to M (Shield 1.1) and I unlocked bootloader no problem. However when I go to flash or temp boot twrp 2.x or 3.x it flashes OK, but when I reboot (either via fastboot or hard off/start to recovery manually) it appears it is overwriting the recovery partition and it just boots normally.

Is there a limitation to flashing twrp bootloader in M, and do I have to downgrade to L to flash recovery partition?

I seem to be happy w/ stock (limited stick time), I just want to root at this point and install my favs. Once I get this running will supersu pro preserve root, or do I need to turn off nvidia OTA process.

Also I see optimization for chrome, does this do anything X1 optimizations)?

Thanks
After you flash twrp reboot to recovery. I may be wrong, but I think the stock ROM overwrites the custom recovery at reboot. If you reboot to twrp first after flash, twrp will disable this.

Sent from my SHIELD Tablet K1 using Tapatalk
 

DiWizard

Senior Member
Oct 29, 2010
79
0
Birkirkara
Rooting

Hi everyone,

Yesterday got my new Nvidia Shield Tegra K1 and upon using it I noticed it's a great tablet for it's price range and will do my job easier while flying my Phantom 4. To be honest it's seems very stable and solid but was thinking about rooting it. I have some questions regarding the process wince I haven't rooted anything since my HTC Fire, log time ago that was. What are the benefits of rooting this device ? Will I still be able to update the Shield with its official updates ? Will I be able to roll back to an unrooted tablet should I need too ? I wasn't planning on flashing a custom rom but if I'll do what are the pros and cons of doing so ? I know that maybe searching this forum I would find all the answers needed but since there is so much information and threads I'm lost as from were to start from.

Would be nice to guide me about how to properly root my device with all the necessary links. My tab is running on Android 6.0.

I thank you so much guys for the hard work you all do in providing such information. I know it takes a lot of time and patience.
 

Techie Android

Senior Member
Apr 28, 2015
207
92
I just got a Shield K1. I like it a lot but I wanted to root it. Then I saw how confusing it is to distinguish between it and the previous model. My guess is whatever is out there that says Shield Tablet means the old one not the K1. I also updated mine to MM cause I'm using and 128GB micro sd card for internal storage. I guess I'll just have to wait until more support comes out for this tablet such as a stable TWRP 3.0 Recovery and the ability to gain root access and custom ROMs like CM 13.
 
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ps2lover

Member
Jan 21, 2013
39
9
do you recommed to install all OTAs before install custom recovery and custom roms or is it better to install twrp-2.8.7.1 out of the box and then go for the custom stuff ?
 

edisso10018

Senior Member
Sep 11, 2010
1,109
305
Bonn
I would install all updates to get the latest bootloader. Do not install twrp 2.8.7.1. Install the official 3.0.x from the official site.
 
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  • 31
    Hello Guys,

    At first a little background story:
    I bought the Tablet 3 Month ago. I have got the Update to Android 6.0 in January and unfortunately, I applied it.
    So If you don't want to apply a custom rom do not update to 6.0, because 5.1.1 is much better.

    I am not responsible if anything goes wrong.
    Ok, so let's get started:
    At first you must install Minimal ADB and Fastboot on your PC/Laptop/Mac.
    Windows: https://forum.xda-developers.com/showthread.php?t=2588979
    Linux/Mac: http://rootmygalaxy.net/install-adb-and-fastboot-on-mac-or-linux/
    Here is the link for all OSs: http://lifehacker.com/the-easiest-way-to-install-androids-adb-and-fastboot-to-1586992378
    Before you can Root or flash a Custom Rom you must flash the recovery:
    You will need:
    -Nvidia Family Drivers(Extract it in a folder of your choice): http://nvidiashieldzone.com/files/shieldtv/shieldfamilydriver.zip not working anymore, official link:
    http://developer.download.nvidia.com/mobile/shield/SHIELD_Family_WHQL_USB_driver_201801.zip
    -As many of you are experiencing problems with my previously mentioned TWRP 2.8.7.3 version I am replacing the link with the official TWRP Shield Tablet Download Site. Just take the newest stable version: https://dl.twrp.me/shieldtablet/ (Put the file into the ADB+Fastboot Folder)
    -TWRP 2.8.7.3 Recovery(Put the file into the ADB+Fastboot Folder): Download URL: https://www.androidfilehost.com/?fid=24269982087009777
    Developer Post: http://forum.xda-developers.com/shi...recovery-twrp-2-8-7-0-touch-recovery-t3257172

    Install the Drivers

    Connect your Tablet to your PC

    Windows:
    Open your Device Manager
    If there Is a device with a yellow ! klick on it and update the Drivers Manually(select the Folder where you extracted the Family Divers)
    Linux:
    You don't need any drivers
    (For every fastboot command in ADB+Fastboot you will need a "sudo" in front of it...)
    Mac:
    You also don't need any drivers
    (For every fastboot command in ADB+Fastboot you will need a "./" in front of it...)

    Flash Recovery
    1. Open Minimal ADB and Fastboot
    2. Type in
    Code:
    adb devices
    if you get a long term of numbers and letters your drivers are correctly installed, If this command does not bring up a device, check your cable connection and/or update your drivers again.
    3. Now you must enable developer options on your SHIELD Tablet K1
    3.1 Go to your Setting, scroll all the way down and choose Info(or similar)
    3.2 Tap seven times on the Build Number
    3.3 Now go back and now there is a new menu point Developer Options
    3.4 Open them and Enable USB Debugging
    4. Now type
    Code:
    adb reboot bootloader
    EDIT: 4.1 To enable the fastboot protocol, you must select "Fastboot mode" on the Tablet. After that type
    Code:
    fastboot devices
    in order to check if fastboot is enabled.
    5. Before you can do anything you must unlock the Bootloader
    5.1 Type in
    Code:
    fastboot oem unlock
    5.2 Follow the Instructions on the Terminal(On your tablet: press the volume down button and then the power button)
    6. Now you are ready to flash the recovery
    6.1 Type in
    Code:
    fastboot flash recovery twrp-x.x.x-x-shieldtablet.img
    6.2 Wait until it is finished then navigate with the volume buttons through the Menu on your Tablet and choose the option recovery mod with you power button
    7. You are now in a custom Recovery on this point you must decide what you want to do:
    -Do you only want to root your Device
    -Or do you want to install a custom rom

    Custom Rom
    If you want to be on the safe side you should consider wiping the /data partition (Troubleshoot section at the end of the Post)
    1. You can access your tablet from your PC
    2. Now move your Custom rom to your internal or SD Card Storage
    2.1 Download your custom rom of your choice.
    2.1.1 Cyanogenmod 12.1 (Android 5.1.1) and BlissPop v4.0.3 https://www.androidfilehost.com/?w=files&flid=150249
    2.1.2 Cyanogenmod 13.0 (Android 6.0) https://androidfilehost.com/?w=files&flid=27600&sort_by=date&sort_dir=DESC
    2.1.3 Nvidia Shield Tablet Resurrection ROM (Android 6.x) https://androidfilehost.com/?w=files&flid=60681&sort_by=date&sort_dir=DESC
    2.1.4 BlissPop
    2.2 Download Google Apps (Gapps) (ARM Device)
    2.2.1 Android 5.1 http://opengapps.org/?api=5.1&variant=stock
    2.2.2 Android 6.0 http://opengapps.org/?api=6.0&variant=nano
    2.3 Download Nvidia Apps (You still need to install Nvidia Shield HUB from the Play Store)http://forum.xda-developers.com/shield-tablet/development/shield-apps-cyanogenmod-12-t3070116
    3. In TWRP click on Backup and Swipe to Back Up
    3.1 Now go to Wipe. For a dirty flash you will only need to wipe the Dalvik and Cache for a full wipe select Dalvik, System, Data, Cache
    4. After it has finished Click on Install and choose the .zip of your Custom Rom
    4.1 To install the Google Apps click on Add More Zips and select the GApps zip
    4.2 And again click on Add More Zips and select nvsystemservices.zip
    4.3 now you can Swipe to Confirm Flash

    Root
    Download the Latest Stabel SuperSU file: http://download.chainfire.eu/supersu-stable and copy it to the internal or SD Card Storage
    For Android 7.0 (Nougat) the SuperSU r4 2.78 version is confirmed working.
    1. Open Minimal ADB and Fastboot
    2. Type in
    Code:
    adb reboot recovery
    to enter the recovery mode
    3. In TWRP click on Backup and Swipe to Back Up
    4. After it has finished Click on Install and choose the UPDATE-SuperSU-v2.65-20151226141550.zip (or similar) and Swipe to Confirm Flash
    5. Restart you Tablet and now a new App SuperSU is Installed

    Xposed Framework
    Download the Xposed Framework Zip file, take the newest version:
    (The Shield Quad Core has a 32 bit arm architecture, so you need the framework for arm)
    SDK21 for Android 5.0: http://dl-xda.xposed.info/framework/sdk21/arm/
    SDK22 for Android 5.1: http://dl-xda.xposed.info/framework/sdk22/arm/
    SDK23 for Android 6.0: http://dl-xda.xposed.info/framework/sdk23/arm/
    and the apk: https://forum.xda-developers.com/attachment.php?attachmentid=3921508&d=1477916609
    and move them to you Tablet.
    Developer Thread (for the uninstaller): https://forum.xda-developers.com/showthread.php?t=3034811
    Go to Recovery with Root
    1. Now that you have root you don't need you PC anymore. Go to the Play store and download Quick Boot
    2. Open Quick Boot and klick on Recovery
    3. Allow Root rights and the Tablet should boot into recovery
    Go to Recovery without Root
    1. Shut down your Tablet
    2. Press and hold the Vol down button and the Power button until the Bootloader screen appears
    3. Navigate with the volume buttons through the Menu on your Tablet and choose the option recovery mod with you power button
    Install Xposed Framework
    1. In the TWRP Recovery (Optionally you can make a Backup) select Install and choose the xposed-v80-sdk22-arm.zip file
    2. When you get an Error let me know
    3. Now Restart you Tablet and install the .apk file normally
    4. In the App Press Framework and now there should be a green writing saying: Xposed Framework version 80 is active
    5. Here is a list of very useful programs for the Xposed Framework: http://forum.xda-developers.com/android/general/best-xposed-modules-android-t3103027

    Please Leave a post if you are getting errors or something isn't clearly explained! And if I could help you, consider giving me a Thanks ;)

    Troubleshoot
    If you are stuck in a Bootloop:
    Without data loss(e.g. when you installed Xposed framework zip and its stuck in a bootloop)
    1. flash the stock rom boot image BUT ONLY IF YOU DONT USE A CUSTOM ROM (it will probably loose root). go to https://developer.nvidia.com/gameworksdownload#?search=SHIELD Tablet K1&tx=$additional,shield and download the latest NVIDIA SHIELD Tablet K1 Recovery OS Image
    2. Unpack the zip file and flash it to your Tablet
    Code:
    fastboot flash boot boot.img
    If something went wrong while flashing a custom rom (after that you will need to flash the custom/stock rom again)
    wipe the /data partition. It could be encrypted from the previous rom. Be aware that you need to reinstall the rom, therefore loose all your data. Troubleshot guide by agentbob123


    -Toby

    Credits:
    @xsquid mac support
    @agentbob123 suggestion to mention to wipe the /data partition as a solution for being stuck in a bootloop
    @champs777 suggested the newest TWRP
    @grävling mentioned importance of waiting until the recovery flash is finished
    5
    Great guide. Thank you so much for putting this together. I just got my tablet within the last week. It came with 6.01 loaded on it. The twrp-2.8.7.3 would not work. It would try to go into recovery. After about 2 minutes it would fail, then it would boot back into the OS. I tried out the newest version twrp-3.0.2.2 and it worked perfect. Figure I would share with others having the same issue.

    https://dl.twrp.me/shieldtablet/twrp-3.0.2-2-shieldtablet.img
    3
    5. Opened Device Manager to update drivers manually but i'm not getting the option to choose the file where I extracted the family drivers.

    Try the step-by-step instructions provided here:

    https://developer.nvidia.com/gameworksdownload#?search=SHIELD Family Windows USB

    But to be honest, I'm not sure you need the drivers installed to use adb/fastboot. I think the PC will just read it as a generic Android device, which is good enough.

    I have the USB Debugging selected when my tablet is connected to my PC. Not sure if I need to ot not.

    USB Debugging is needed (toggled "on") in order to use adb, but is not needed in order to use fastboot.

    Understand that adb and fastboot are related, but with important differences:
    -You need to be booted to OS to use adb.
    -You can only use fastboot when in bootloader-fastboot mode.

    Fastboot is what you really need to root or flash custom ROM (specifically, to install custom recovery TWRP). You should be able to boot to bootloader, select fastboot, and issue the command: fastboot devices
    And the cmd prompt should respond with the tablet's serial number (don't post it, just say whether it does or not).
    If it hangs, or some error message, then something is wrong. So let us know.
    2
    do step by step has always and works perfect thanks a lot !
    glad I could help ;)
    Soon I will add Instructions to install a Linux desktop environment like posted here 2 days ago, after I tested it thoroughly, because I think it's a good thing to have in a Complete Guide
    2
    Tablet won't boot?

    I bought a Shield K1. Before doing any customization, I updated it to nVidia's 1.4 software for Marshmallow so it is completely up to date.

    I followed this guide, unlocking the bootloader and installing TWRP 3.0.2-2. Once installed, I flashed SuperSU 2.78, then used the TWRP interface to shut it down. I booted it up, and it restarted a few times. One of the instructions said it might do that, so I allowed it to keep going. It never booted passed the bootloader though, so I held the power button.

    During this boot loop, I noticed various mount points were failing to mount.

    Now it won't turn on at all. No backlight, no indication it's receiving power at all. What can I do to get it going again?

    I was able to get the tablet to turn back on. I found in this thread something about the Shield occasionally having screen problems, so I kept trying. I plugged the tablet into my computer to see if I could get to fastboot without being able to see anything, and the battery logo came on the screen! Tapped power, and it came on. I'd tried plugging it into the wall, but not my computer before.

    I let it go through its cycle, and when I saw the error messages, I searched online and found that I should have formatted /data because with it having been encrypted, the bootloader couldn't access it after my modifications.

    I re-flashed EVERYTHING back to stock, then TWRP again, formatting /data and the caches, and finally it worked. Booted back to TWRP, flashed SuperSU, and it's working perfectly.

    Flash Recovery
    . . .
    6. No you are ready to flash the recovery
    6.1 Type in
    Code:
    fastboot flash recovery twrp-2.8.7.3-shieldtablet.img
    6.2 Wait until it is finished then navigate with the volume buttons through the Menu on your Tablet an choose the option recovery mod with you power button
    7. You are now in a custom Recovery on this point you must decide what you want to do:
    -Do you only want to root your Device
    -Or do you want to install a cutom rom

    Toby, you may want to update your guide to include instructions for formatting /data, perhaps as steps 7.[x-x] to avoid others experiencing the same problems I had.