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Adb fastboot shield recovery image flashing instructions (RETURN TO STOCK)

OP MRobbo80

27th August 2014, 11:43 PM   |  #1  
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This is Nvidia's own instruictions which I just followed works great! For new members please be aware that you may have to edit a command given in the instructions below which I will point out (depends on what OTA you have downloaded) for example

fastboot flash dtb tegra124-tn8-p1761-1270-a04-e-battery.dtb Highlighted in red is the name you may have to change within the extracted ota, Just look in the extracted file and locate the .dtb now just copy and paste the name of your .dtb and change the fastboot command --> example--> fastboot flash dtb tegra144-tn8-p1761-1270-a04-xda-battery.dtb
Please Read Carefully!

Follow here to get OTA

What you must have
You need a unlocked boot loader instructions further below.

Also in cmw recovery, please wipe all partions! and reboot in to fastboot mode whilst still in recovery!


SHIELD RECOVERY IMAGE FLASHING INSTRUCTIONS

To follow the instructions in this guide, you will need adb and fastboot.
These tools are provided as part of the Android SDK:

or you can just download this little .exe Minimal ADB and Fastboot this is what I used.please extract your recovery.zip into where you have installed Minimal ADB and Fastboot example c:\program files x86\Minimal ADB and fastboot.

Before flashing this recovery image to your SHIELD, connect your SHIELD
via USB to the PC where you downloaded this recovery image example same as above c:\program files x86\Minimal ADB and fastboot.

Next, put your SHIELD into fastboot mode using one of the following methods:
SW method 1:
- Boot to android home screen
- Connect the device to linux/windows system
- Open terminal (on linux); command prompt (on windows).
- Type "adb reboot bootloader" in terminal/command prompt

HW method 2 :
- Turn off the device
- Press and hold "Back"+"Home"+"SHIELD" buttons till device boots

To flash this recovery image to your SHIELD, run the following commands from
the directory where you extracted the recovery image package. If this is the
first time you have done this procedure, you must unlock the bootloader (see
below):

fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot flash staging blob
fastboot flash dtb tegra124-tn8-p1761-1270-a04-e-battery.dtb <---------------------------------------------------------------------
Now restart your device
now wait a min or two and you have just returned to stock!

Unlocking the Bootloader
Your SHIELD may have shipped with a locked bootloader. To update the device,
you must unlock the bootloader using the following:
- fastboot oem unlock
- Press the Home button on the device to highlight "Unlock".
- Press the Shield button to confirm the unlock. Your device's bootloader is now unlocked.
Last edited by MRobbo80; 29th August 2014 at 10:45 AM. Reason: update
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28th August 2014, 12:00 AM   |  #2  
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Also worth noting that on Linux, you can install the "android-tools" package that gives you ADB and Fastboot anywhere.

For example, on fedora 20, run:

$ sudo yum install android-tools

Make sure you run fastboot with su- privileges (not doing this caused me no end of frustration before finding out why my device wasn't detected).
19th September 2014, 03:40 PM   |  #3  
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Quote:
Originally Posted by MRobbo80

This is Nvidia's own instruictions which I just followed works great! For new members please be aware that you may have to edit a command given in the instructions below which I will point out (depends on what OTA you have downloaded).

Unlocking the Bootloader
Your SHIELD may have shipped with a locked bootloader. To update the device,
you must unlock the bootloader using the following:
- fastboot oem unlock
- Press the Home button on the device to highlight "Unlock".
- Press the Shield button to confirm the unlock. Your device's bootloader is now unlocked.

Umm having a little trouble unlocking. Am I to understand that you unlock with the device turned on ? because otherwise there isn't a home button...and where is the shield button ? I only have power and volume
buttons. This looks like the unlock method for the Shield not the Shield Tablet.

Sent from my Shield Tab
19th September 2014, 04:46 PM   |  #4  
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Quote:
Originally Posted by Wulfpk

Umm having a little trouble unlocking. Am I to understand that you unlock with the device turned on ? because otherwise there isn't a home button...and where is the shield button ? I only have power and volume
buttons. This looks like the unlock method for the Shield not the Shield Tablet.

Sent from my Shield Tab

Your device should first be turned on. Then connect to PC and open a command prompt in your Android tools folder (where the ADB file resides) and type, "ADB reboot bootloader" (without the quotation marks).
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adb (automated) or cwm (manual), fastboot adb, stock
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