[Nexus 7 Q&A, Help & Troubleshooting] Sib64:
[GUIDE] UNLOCK - ROOT - RETURN TO STOCK and/ or UNBRICK your Nexus 7 3G “Nakasig- Tilapia” v4.2.2:cool:

- Disclaimer: I don't take any responsibility for anything you do to your tablet, which is to transform it into brick, break, or transform it into coffee machine -

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Pre-Steps

To make this easier,

1 - you should put the root-tool.zip selected on the folder “fastboot” (if you use the easy way - Goto post #2)

2 – You should put the recovery.img selected on the folder “fastboot”

To unlock your device, you must go to your bootloader. To do that, you have possibilities;

1. Turn your device on while pressing volume down

or

1. Connect your device and go to cmd terminal

> cd \Users\<user name>\AppData\Local\Android\android-sdk\platform-tools (it's common localization for an auto install)
> adb devices
# the following output should be returned
List of devices attached
<device serial number> device

2. Boot to the bootloader by use adb

adb reboot bootloader

or

2 Bis. Boot to the bootloader by use fastboot

fastboot reboot-bootloader

3. Unlock your device* by

fastboot oem unlock

*You will have to accept and erase all of your data on the tablet.

You are unlocked :good:

By Fastboot only easy way - Unlock you device

C:\Users\Username>cd c:\fastboot

c:\fastboot>fastboot oem unlock

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You can choose one of both recoveries - CWM or TWRP

(You're still inside the bootloader and connected through the usb cable)

1. Flash CWM especially for your N7 3G

fastboot flash recovery recovery-name of your recovery.img

To make CWM Permanent recovery

2. Boot into recovery by pressing “volume up” and when the menu says ‘recovery mode’ press the power button

3. Go to “Mounts and Storage” menu

4. select “mount system”

5. Type in cmd terminal

adb shell
cd /system
mv recovery-from-boot.p recovery-from-boot.bak
exit

If you having trouble gaining shell, try

adb kill-server

then

adb start-server

. And restart the lines command above

* For some people, it has been reported that you don't have to replace recovery-from-boot.bak. The flash is enough to make the recovery stick.

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(You're still inside the bootloader and connected through the usb cable)

1. Flash TWRP especially for your N7 3G

fastboot flash recovery recovery-twrp-tilapia-2.4.4.0.img

To make TWRP Permanent recovery

2. Boot into recovery by pressing “volume up” and when the menu says ‘recovery mode’ press the power button

3. Go to “Mounts and Storage” menu

4. select “mount system”

5. Type in cmd terminal

adb shell
cd /system
mv recovery-from-boot.p recovery-from-boot.bak
exit

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What's installed

- SuperSU binary and APK

- Nothing else, that's it.

Installation and usage

- Download the ZIP file (see post below for link)

- Extract the ZIP file (you will see - 2 folders=> images & tools and 3 files: root-windows // root-mac // root-linux)

- Boot your device in bootloader/fastboot mode. Usually this can be done by turning your device off, then holding VolUp+VolDown+Power to turn it on.

- Connect your device to your computer using USB

- Windows:

Run root-windows.bat

- Linux

chmod +x root-linux.sh

Run root-linux.sh

- Mac OS X

chmod +x root-mac.sh

Run root-mac.sh

How to use Superboot - Windows, Linux and OSX

- Download the Superboot zip file above and extract to a directory

- Put your device in bootloader mode - Turn off the phone then turn on with the 'volume up' and 'volume down' buttons both pressed to enter the bootloader (as pictured below)

- WINDOWS - double click 'superboot-windows.bat'

- MAC - Open a terminal window to the directory containing the files,

and type

chmod +x superboot-mac.sh

followed by

./superboot-mac.sh

- LINUX - Open a terminal window to the directory containing the files,

and type

chmod +x superboot-linux.sh

followed by

./superboot-linux.sh

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Before you begin, please make sure you have ADB and Fastboot drivers installed and working.

1. Download the factory image for the Nexus 7 3G=>

4.2.2 (JDQ39) - nakasig-jdq39-factory-0798439d.tgz

- md5: ee8db1ed6ff1c007fe12136d4bc65cd8- size: 279.9MB -

The Version Zip if you prefer

2. Extract the factory image into the same directory as your ADB and Fastboot executables (e.g. "\android-sdk\platform-tools")

3. Plug in your device. If you are booted into Android, open a command prompt to your ADB and Fastboot directory, then type:

adb reboot bootloader

If your device is powered off, press and hold both volume keys and the power button simultaneously. After holding all three buttons for a couple of seconds, your bootloader should launch. This should reboot you into the bootloader.

4. Type:

fastboot flash bootloader bootloader-tilapia-4.18.img

5. Type:

fastboot reboot-bootloader

6. Now type:

fastboot -w update image-nakasig-jdq39.zip

7. Optional: If you would like to relock your bootloader for warranty or security purposes, make sure you are in your bootloader screen again and type:

fastboot oem lock

8. If your tablet hasn't already rebooted automatically, you can type

fastboot reboot

Well done. You should now be back on stock Android 4.2.2 :cool: ;)

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These root tools are actually the easy way for rooting your device, so you can use them without problems.

For my part I’ve used

the easy way by my fastboot guide for unlock my device,

Adb lines command for flash TWRP as permanent recovery,

Thanks for @mateorod, @Chainfire, @paulobrien and all members who helps for the development about the Nexus 7 3G+