[Nexus 7 (2013) Q&A] @SidDev:
try this and press thanks :)

nope,

Step 1: Download the ADB/Fastboot files and the

USB drivers for Windows based PC first. The the

latest factory image for your Nexus device can be

downloaded directly from Google’s website .

ADB/Fastboot – Mac , Windows

USB drivers for Windows

Extract the contents of the ADB/Fastboot ZIP file

inside a new folder called ‘google’ on your desktop.

Extract and transfer the contents of the factory

image inside this folder as well. The list of files will

include a ZIP file containing the codename of your

Android device, two files with “flash-all” names, and

a bootloader image file. All the extracted contents of

the factory image should be inside the same folder

as the ADB and Fastboot file, otherwise you will get

a file not found error.

Make sure to install the ADB drivers as well if you

are running a Windows based PC.

Step 2: Now, reboot your Nexus device in bootloader

mode. This is usually done by switching off the

device, and pressing the Volume down + Volume Up

+ Power button simultaneously. If that does not

work, try the Volume down + Power button

combination.

After the device has booted into bootloader mode,

connect it to your PC.

Step 3: Open a new Terminal or Command Prompt

window, and navigate to the ‘google’ folder that you

created in Step 1. Before we start flashing the

factory image, we need to make sure that your

Nexus device is being detected by the PC.

fastboot devices

If you are using a Mac, then you need to prefix a “./”

before every Fastboot command. So, the above

command will look something like this on a Mac -:

./fastboot devices

The above command should confirm if your device is

indeed being detected by your PC or not. If it is,

then proceed to the steps below. If not, repeat the

steps above again. Make sure that you have properly

installed the drivers and are inside the correct

folder.

If you are running Windows, copy-paste the following

command in the command prompt window -:

flash-all.bat

On a Mac, copy-paste the following command -:

./flash-all.sh

The script will then automatically flash the full

factory image on your Nexus device. Once the

factory image has been flashed, your device will

automatically reboot. Keep in mind that the first boot

might take some time so please be patient.

If the flash-all.sh script gives you a fastboot not

found error on your Mac, open up the file in Text Edit

and add a “./” before every fastboot command.

The flash-all script included in the factory image

might not work for all. It has always been pretty

unreliable and has only worked once for me in the

last 2 years. If you are in the same boat as me, you

will have to flash each partition manually on your

device. This is slightly cumbersome though.

The command to manually flash a partition via

fastboot is “fastboot flash partition filename.img”. In

the factory image that you extracted in Step 1, you

will notice there is another ZIP file. Extract the

contents of that ZIP file inside the ‘google’ folder.

Now, its time to manually flash the partitions to your

Nexus device. We will first begin with the bootloader.

fastboot flash bootloader filename.img

Then, we will flash all other partitions. They don’t

necessarily need to be in the same order as I have

listed them below. The names of the image files in

the factory image will clearly indicate the partition

they are intended for as well.

fastboot flash boot filename.img

fastboot flash radio filename.img

fastboot flash recovery filename.img

fastboot flash userdata filename.img

fastboot flash system filename.img