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How to revert your NVIDIA SHIELD TABLET K1 to stock NVIDIA OS Android 5



How to revert your NVIDIA SHIELD TABLET K1 to stock NVIDIA OS Android 5

Step by step guide How to revert your NVIDIA SHIELD TABLET K1 to stock NVIDIA OS Android 5:
1) Download and install Android SDK Tools and Cygwin Software
Android SDK Tools:
http://developer.android.com/sdk/index.html

Or download the SDK files from here:
http://ul.to/htvu9beb

Files that you need from the SDK:
adb.exe
adbwinapi.dll
adbwinusbapi.dll
fastboot.exe

Cygwin Software:
https://cygwin.com/install.html

2) Download “NVIDIA SHIELD K1 Recovery Images” and the “Windows USB Driver” if your PC won’t recognize the tablet
SHIELD Open Source Resources and Drivers:
https://developer.nvidia.com/shield-open-source

3) Make a new folder in local drive (C:) and rename it to k1 and export there the “Recovery Images” that you downloaded from NVIDIA website

Cygwin commands:
1) cd c:/k1
2) bash ./extract-nv-recovery-image-shield-tablet-sb_na_wf-37154_590.0364.sh
NVIDIA updated their website and now you don’t need to use this “bash” command to extract the .sh because the .sh is already extracted. Just download the zip of the image and extract it with with win zip or win rar and skip to command 3
3) ./adb reboot bootloader
4) ./fastboot oem unlock
5) flash-all.bat

If you want to lock back then just use this command:
./fastboot oem lock

You can read here why I’m reverting my tablet to stock NVIDIA OS Android 5
DO NOT Update your NVIDIA SHIELD Tablet K1

I just talked with the support about the warranty and here what they said:
[10:27:29 AM]Me: Revert NVIDIA SHIELD TABLET K1 to stock NVIDIA OS Android 5 from official NVIDIA developer website https://developer.nvidia.com/shield-open-source will void the warranty?
[10:28:34 AM]Support: I need to check and confirm regarding that. However, could you please let me know the reason for reverting to stock NVIDIA OS ?
[10:30:55 AM]Me: I updated to Android 6 the OTA that you released and there are a lot of problems with this version and i have an open ticket about it from 12/27/2015 and still no solution you just tell me to wait to the next OTA update
[10:31:36 AM]Me: So i want to revert to working Android 5
[10:31:42 AM]Me: So the question is
[10:31:44 AM]Me: Revert NVIDIA SHIELD TABLET K1 to stock NVIDIA OS Android 5 from official NVIDIA developer website https://developer.nvidia.com/shield-open-source will void the warranty?
[10:32:45 AM]Support: Okay, please give me a moment
[10:32:52 AM]Me: ok sure
[10:33:54 AM]Support: Thank you for your patience
[10:34:16 AM]Support: It will not void the warranty
[10:34:26 AM]Me: Thank you!!!
[10:34:34 AM]Support: No problem
[10:34:38 AM]Me: I hope you will release new OTA soon
[10:35:00 AM]Me: Thanks again and have a great day!
[10:35:14 AM]Support: Thank you for contacting NVIDIA Customer Care.Have a good day.

New OTA Updates:
Nvidia SHIELD Tablet K1 Software Upgrade 1.0 Android 6.0
NEW Nvidia SHIELD Tablet K1 Software Upgrade 1.1 that fix all the problems
Nvidia SHIELD TABLET K1 SOFTWARE UPGRADE 1.2 04/13/2016

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DO NOT Update your NVIDIA SHIELD Tablet K1

DO NOT Update your NVIDIA SHIELD Tablet K1

NEW Nvidia SHIELD Tablet K1 Software Upgrade 1.1 Android 6.0

NEW Nvidia SHIELD Tablet K1 Software Upgrade 1.1 that fix all the problems