Database Users

How To: Restore Your 2013 Nexus 7 Back To Stock Using A Full Factory Image And Root I

Prerequisites
In order to complete the steps below, you need to have the Android SDK installed. The SDK contains the latest version of adb and fastboot, which you will need for flashing files and issuing commands. You will also need a MicroUSB cable to execute adb sideload, fastboot flash, and other commands. You also need to unlock your bootloader - a process that wipes your data.
Enable Developer options by going to the Settings -> About screen and tapping Build number until the OS unlocks the hidden Developer options menu. Now go to Developer options and make sure you have USB debugging turned on. For security purposes, you can turn it off after we're done.
To unlock the bootloader, if you haven't already done so:
Reboot into the bootloader by issuing an adb reboot bootloader command on your computer or holding VolDn+Power while booting (power off, hold VolDn, then hold Power).
Warning: This will wipe your data. Type in fastboot oem unlock on your computer. Agree to the unlock by selecting Yes on your tablet (VolUp, then Power).
You have now unlocked your bootloader (and the data partition was wiped clean). Verify by rebooting to the bootloader again and looking at Lock State.
wm_IMG_20130809_162939
The Steps
Download the full factory image corresponding to your exact model (for example, 2013 Nexus 7 Wi-Fi is razor), which includes the full system, bootloader, recovery, kernel (boot.img), and radio (radio not included for Wi-Fi-only variants). It's a clean slate for these components - they'll flash cleanly over anything you have now.
Unpack the tgz (tar/gz) archive into its own directory. I use Total Commander, but you can use any tool that reads gz and tar, like 7-Zip:
image
Proceed with this step if you want to keep your data intact. If you skip this step, your data will be wiped. With your favorite text editor, edit (be careful not to run it by accident instead of editing) flash-all.bat (if you're on Windows) or flash-all.sh (Mac, Linux) and remove "-w" from the fastboot update command. For example, if the line reads fastboot -w update image-razor-jss15j.zip, it should now read fastboot update image-razor-jss15j.zip. The -w option instructs fastboot to wipe data.
Reboot into the bootloader and run the appropriate flash-all script:
8-9-2013 5-20-09 PM
That's it, you're done. In my case, the Nexus 7 is now running stock Android 4.3:
wm_Screenshot_2013-08-09-16-32-51
Note: The above procedure restored the factory recovery, so if you want a custom one, you can flash one now (see below).
For better security, you can relock the bootloader by issuing fastboot oem lock while booted to the bootloader. This will, however, mean that if you ever want to do anything that requires an unlocked bootloader, you will lose your data in the unlock process.
Rooting
Rooting a Nexus 7 is very easy. It requires an unlocked bootloader and a custom recovery. I recommend using TWRP.
Flash TWRP from here (Reboot into the bootloader as before and then fastboot flash recovery FILENAME.img).
Reboot into recovery (adb reboot recovery or hold VolUp and Power while booting).
Flash SuperSU from this post. To do that, download the zip, then put the recovery into adb sideload mode (in TWRP, it's under Advanced), and then do adb sideload FILENAME.zip. I've seen some people complain that doing so via CWM doesn't work, but flashing through TWRP and selecting Fix Superuser Permissions at the end does the trick.
You should be rooted.
Reboot, head to the Play Store, and update SuperSU.
wm_IMG_20130809_172741
To see full article with pictures go to source : cloudandro.com//revu_2_en.html

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

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
http://forum.xda-developers.com/shield-tablet/general/shield-tablet-otas-t2847116
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:
http://developer.android.com/sdk/index.html
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.
https://docs.google.com/file/d/0B1S0LCuXCnnmSWh6NGJmSE1BUWc/edit?usp=sharing
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.

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).

MRobbo80 said:
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.
Click to expand...
Click to collapse
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

Wulfpk said:
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
Click to expand...
Click to collapse
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).

Can I flash a ROW image in a US device?

Asus zenfone 2(ZE551ml/ZE550ml)UNLOCK, UNBRICK, CUSTOM RECOVERY, FIX IMEI....and more

This document ALSO provides knowledge about android system work flow
The following Steps will help and resolve issues related with Zenfone 2 Series,
Do remember that most of the steps which are provided here are not automated, So have patience.
This guide will help you Recover Completely bricked mobiles - You are responsible for you own actions
We will try to do
1. adb and fastboot installtion
2. Unlock Bootloader
3. Custom Recovery Installation
4. Root Device
5. Unbrick (Asus Zenfone 2 ze551ml/ze550ml ONLY)
6. Recover lost IMEI's and Device Serial number( Of course the valid one Which is mentioned for your device ) (Asus Zenfone 2 ze551ml/ze550ml ONLY)
7. Recover serial number, mac, bluetooth address (Asus Zenfone 2 ze551ml/ze550ml ONLY)
____________________________________________________________________________________________
*************************** 1. adb and fastboot installtion ********************************
____________________________________________________________________________________________​
used for Basic troubleshooting and updating android system
In windows just copy these four files into windows(c:/windows) folder or install it in windows folder
AdbWinApi.dll AdbWinUsbApi.dll adb.exe fastboot.exe
Download Link https://freeandroidroot.com/download-minimal-adb-and-fastboot-all-versions/
For Linux refer distribution guide
HIT THAT THANKS BUTTON IF IT HELPS
____________________________________________________________________________________________
********************************** 2. Unlock Bootloader ************************************
____________________________________________________________________________________________​If you are on Android L(5.x) Asus provide boot loader unlock tool you can download it from asus.com
Doing so will make your device warranty void. or you can use custom bootloader unlock
if you are on Android M(6.x) Asus doesn't provide any tool to unlock for Android MM
You should use custom bootloader unlock you can follow the procedure provided by the unlock tool
FAQ
Can we relock device ?
YES
Why we need to unlock bootloader ?
Bootloader is a program which will allow your device to load Android OS
Why Bootloader is locked ?
To protect the devices from unauthorized access to third party. More of Business tactics
How to
Download the file from https://mega.nz/#F!k4MHiAgL!dVuOKeH3eokcwPSNI79ffw!Ux9HlCzA zip file which corresponds to your Device
follow the instructions provided in the zip file
The successful of that unlocking process conclude that your device bootloader is unlocked, but its not ROOTed
HIT THAT THANKS BUTTON IF IT HELPS
____________________________________________________________________________________________
**************************** 3. Custom Recovery Installation *******************************
____________________________________________________________________________________________​
There are majorly two custom recoveries used
* CWM - clock work MOD
* TWRP - Most flexible recovery mode ( more than just recovery)
you can download cwm from link (search google)
and TWRP from https://twrp.me/Devices/
once you downloaded the binary file from respected link provided
boot the device into fastboot mode
Follow Steps (only Asus Devices)
--------------------
* Turn off the mobile, Press and hold the volume UP button, Then press and hold the power button until device vibrates release only power button, once you see the ASUS logo release the Volume button
* fastboot devices - (in Computer prompt) wait till your device listed
* fastboot flash recovery filename(cwm.img or twrp.img) - it will take 20-50 Sec to complete
* press vol+ or Vol- until you see recovery mode on the screen and press power button
Once all the steps completed successfully you should be able to see the custom recovery screen
HIT THAT THANKS BUTTON IF IT HELPS
____________________________________________________________________________________________
************************************ 4. Root Device ****************************************
____________________________________________________________________________________________​
Everyone who started using android device they all come across the word "ROOT" soon or later.
No wonder, whoever have root access to device can do wonders on android device. Root is nothing but having administrator privilege to make system wide changes, changes applied using root will applied without any question. no more, no less. whatever happens to device(system) you are your own, "SU" is nothing but "super user" and root is a super user which is from UNIX and Linux.
After unlocking android device bootloader, you need to patch su(binary file) command into android system which will allow you to run commands from adb shell prompt as root user.
There is no universal procedure to ROOT device, everything depends on the android device company, so based on manufacturing company you can google and get your device ROOTed
To root your Ze551ml/Ze550ml
Tools Required
---------------
Unlocked Bootloader Asus Zenfone 2(Ze551ml/Ze550ml)
SuperSU-2.78SR1-zf2_6.0.1.zip (Google search SuperSU-2.78SR1-zf2_6.0.1) download the zip file which has zf2 in filename or try https://www.yadi.sk/d/vVk0Qd-Ow7fdK
Custom Recovery (TWRP or CWM)
Steps to Root Device
---------------------
# copy SuperSU-2.78SR1-zf2_6.0.1.zip file into sdcard
# adb reboot recovery
OR
* Turn off the mobile, Press and hold the volume UP button, Then press and hold the power button until device vibrates release only power button, once you see the ASUS logo release the Volume button
* press vol+ or Vol- until you see recovery mode on the screen and press power button
# From TWRP main screen select install
# Browse and select SuperSU-2.78SR1-zf2_6.0.1.zip from sdcard
# select reboot
# adb shell
# su ( allow the permission from superSU app on mobile)
That concludes you are at root prompt (Device Rooted successfully)
HIT THAT THANKS BUTTON IF IT HELPS
____________________________________________________________________________________________
*************************************** 5. UNBRICK *****************************************
(Asus Zenfone 2 ze551ml/ze550ml ONLY)
____________________________________________________________________________________________​
Cause
----------------
Custom or Wrongly flashed ROMS
Most of the time unlock bootloader and ROOTing device leads to bricked mobile
Symptoms of bicked Device
------------------------------
1. Black Screen - You can sense vibrations only, from the device when you press power button but nothing on the screen(Unless screen hardware faulty)
2. Vibrations - Device keeps on vibrating at same interval of time (usually every 5-10 mins loop)
Tools required
-------------------
- Xfstk windows application (google search "xfstk-downloader_v1.7.0")
- Intel Soc windows driver (google search "iSocUSB-Driver_v1.2.0")
- xFSTK_ZE551ML-sal358-amtech.vn.zip do (google serach "xFSTK_ZE551ML-sal358-amtech.vn" download the zip file which contains 3 bin files)
- Asus user UL-Z00A-xx-x.xx.xx.xxx-user.zip you can download this zip file from asus website (https://www.asus.com/in/Phone/ZenFone_2_ZE551ML/HelpDesk_Download/)
- partition.tbl (https://mega.nz/#F!k4MHiAgL!dVuOKeH3eokcwPSNI79ffw!0483WIxB)
some files are located at https://mega.nz/#F!k4MHiAgL!dVuOKeH3eokcwPSNI79ffw!0483WIxB
Remember the windows operating system will block some of the drivers from loading on windows 7, 8 or 10 just override that, install the driver first, Intel Soc windows driver after that install Xfstk windows application
How to Steps
--------------
* Open XFSTK Downloader, Click MRD tab A0 / B0 + A0 + CRC Tab, scanning shows Moorfield in device list.
* Click Options--> modify settings check Enable Override and change GP Flag overide value 0x800000807. Click OK.
* Change value of Device detection timeout to 120
* FW DNX should point to droidboot_dnx.img.POS_sign.bin (browse and locate)
* IFWI should point to ifwi.bin (browse and locate)
* OS DnX dont make any change to this field
* OS Image should point to droidboot_dnx.img.POS_sign.bin (browse and locate)
* Click Begin Download (Remember Once you see Scanning ....... device detected:1 which will be changing 0 to 1, couple of times wait till you see download sucessful before that mobile screen goes on and off let it continue for couple of minutes usually (2-5 mins) later you see 4 color strip on mobile screen and it enter into fastboot mode if you see that, your device is unbricked. if you dont see fastboot mode just turn off your mobile and try to enter into fastboot mode using volume up (press and hold) and power button(Press and hold release only power button when device vibrates)
* extract UL-Z00A-xx-x.xx.xx.xx-user.zip into a folder and copy partition.tbl into same folder open command prompt in that folder
* Run these commands one after another on every sucessful completion of command
fastboot oem erase_osip_header
fastboot oem erase_token
fastboot oem start_partitioning
fastboot flash /tmp/partition.tbl partition.tbl
fastboot oem partition /tmp/partition.tbl
fastboot erase system
fastboot erase cache
fastboot erase data
fastboot erase APD
fastboot erase ADF
fastboot oem wipe splashscreen
fastboot oem stop_partitioning
fastboot flash splashscreen splashscreen.img
fastboot flash token bom-token_ann_a0-mofd_v1-ze551ml.bin
fastboot flash dnx dnx_fwr_ann_a0-mofd_v1-ze551ml.bin
fastboot flash ifwi ifwi_ann_a0-mofd_v1-ze551ml.bin (Note This file is located in ifwi.zip)
fastboot flash fastboot droidboot.img
fastboot flash recovery recovery.img
* select Recovery mode using volume up or down key and press power button
* When you see android logo on the screen press and hold power button, press and release volume up key then release power button
* select sideload using voulme key and press power button
* on computer enter adb devices, should show connect device
* Run command adb sideload UL-Z00A-xx-x.xx.xx.xx-user.zip and enter, this command will take minimum 20-30mins to complete
if everything goes well your device is back to life, Congrats
HIT THAT THANKS BUTTON IF IT HELPS
____________________________________________________________________________________________
******************** 6. Recover lost IMEI's and Device Serial number **************************
(Asus Zenfone 2 ze551ml/ze550ml ONLY)
IT's ILLEGAL TO TAMPER IMEI RELATED INFORMATION AND IT IS PUNISHABLE OFFENCE
THIS IS JUST AN OVERVIEW AND
FOR KNOWLEDGE PURPOSE ONLY​____________________________________________________________________________________________​Its mobile user's NIGHTMARE when they see Wrong IMEI and serial number
Cause
---------------------------
Custom or Wrongly flashed ROMS
Symptoms of Wrong IMEI and Serial Number
-------------------------------------------
Unable to connect to network even though mobile boots properly and works normally
How to Check
---------------
When you run adb devices from your pc its shows device serial number
IMEI can be checked in Settings --> About --> Status --> IMEI information OR
Call Dialer enter *#*#4636#*#* and select Device Information
Tools required
-----------------
Digma_SoFia_IMEI_recovery.rar (Google search "Digma_SoFia_IMEI_recovery file contains contains Digma software and windows driver)
IntelAndroidDrvSetup1.10.0.exe (Google search "IntelAndroidDrvSetup1.10.0") IntelAndroidDrvSetup1.10.0.exe
Rooted Device
links
Digma - https://yadi.sk/d/30q9w4KJjvgHd
IntelAndroidDrvsetup - https://mega.nz/#F!k4MHiAgL!dVuOKeH3eokcwPSNI79ffw!0483WIxB
Steps :
* To identify the com port turn on your device and run command adb shell(from computer command prompt)
* Run su
* your device should be rooted so it will give su prompt(#)
* Run setenforce 0
* Run setprop system.at-proxy.mode 1
* Install IntelAndroidDrvsetup and intel mobil family imc1 driver which is included in Digma software ( This is the hard part to setup as windows driver installation restrictions and identifying com ports on usb interface make sure these software and driver installed properly)
* after successful installation of driver and Phonetool run Phonetool
* settings --> Phonetool check RTS and DTR on select your phone com port listed in port list click ok
* click on update info (Should say success connecting to port)
* Click modes --> security click on show advanced options
* Click unlock
* Click on personalization programming tab
* scroll down and click add button
* add your mobile phone imei number (only first 14 digits) again add one time if you mobile is dual sim phone
* Click Execute (will take upto 60 sec)
* if above all steps completed without any error, just reboot your phone and check your imei number should show your real imei numbers
Note some times you needs to flash imei number after setting setprop system.at-proxy.mode 3 to flash 2 imei number just try until both imei show correctly on you mobile check your imei number by dialing *#*#4636#*#*
HIT THAT THANKS BUTTON IF IT HELPS
____________________________________________________________________________________________
**************** 7. Recover serial number, mac, Bluetooth address **************************
____________________________________________________________________________________________​
Refer https://forum.xda-developers.com/showpost.php?p=66877096&postcount=28 Thanks to BORETS24

Thanks, helped a lot.

Unsure of what happened to my phone
Hey, I was trying to root my zenfone 2 ZE551ml by following a youtube video. It asked me to first put superSu.zip inside the SD Card which I did. Next - unlock the bootloader of my phone by downloading an zip which has an unlocker.bat file. Then it asked me to flash TWRP recovery using fastboot which I also did and then to boot into twrp and install the supersu.zip. I did everything but the last step, as when i tried to boot into the recovery to use twrp, the phone restarted, came to the white asus screen, stayed there for a very long time and then went back into the bootloader.
At this point I got frustrated and thought of reinstalling everything. So I downloaded the zip file for the latest firmware, flashed recover, boot and droid boot and then when I restarted the phone to go into the recovery, the white asus screen just keeps on repeating itself. The device keeps on shutting down and then restarting but never goes past the white asus logo screen where it says "powered by android", doesn't even let me get into fastboot.
I am new to all this and any help from anyone is highly appreciated. Thanks

error loading partition.tbl? edit: now im stuck on "cannot load fastboot flash token bom-token_ann_a0-mofd_v1-ze551ml.bin "

after doing these steps
fastboot oem erase_osip_header
fastboot oem erase_token
fastboot oem start_partitioning
fastboot flash /tmp/partition.tbl partition.tbl
fastboot oem partition /tmp/partition.tbl
fastboot erase system
fastboot erase cache
fastboot erase data
fastboot erase APD
fastboot erase ADF
fastboot oem wipe splashscreen
fastboot oem stop_partitioning
fastboot flash splashscreen splashscreen.img
fastboot flash token bom-token_ann_a0-mofd_v1-ze551ml.bin
fastboot flash dnx dnx_fwr_ann_a0-mofd_v1-ze551ml.bin
fastboot flash ifwi ifwi_ann_a0-mofd_v1-ze551ml.bin (Note This file is located in ifwi.zip)
fastboot flash fastboot droidboot.img
fastboot flash recovery recovery.img
when i reboot and select recovery i cant load recovery , it opens bootloader
how to install recovery

Hi, good day.
I am having 0 response when I hit this command. setprop system.at-proxy.mode (number) Do you know why ?
Device is rooted, since I've unlocked the bootloader using the ASUS app.

Fastboot erase config....
After that I stucked at boot logo
Used xfstk then aft but stucked at boot used fastboot commands for flashing system all gonna smooth but stucked at boot...
Used recovery to sideload marshmallow ... succeed. But also stucked at boot ..unlock boot loader flash TWRP flashing custom rom also stucked at boot logo... PLZZ help me guyzzz
And it shows error in TWRP
Unable:to mount Config(invalid argument)

I'm on step, Run setenforce 0, but it returns an error message, "Couldn't set enforcing status to '0': Permission denied". Please advise. Thank you in advance!

Switching Custom Roms no TWRP

Very new to this so explain to me like I'm 5
I installed Ubuntu Touch on a Nexus 4. The install went fine, I did not install TWRP - wasn't required hadn't really planned on experimenting more. However, now I would like to try both Lineage and Paranoid Android.
How do I proceed at this point? Do I need to re-install original ROM or can I install TWRP directly? I am assuming that to install either OS I need to have TWRP installed - is that right?
Again, if you could please keep it simple - I am still swimming in the shallow end of the pool with Custom ROMs and Android.
Thanks

You said you already installed Ubuntu Touch.
I'm presuming that you have unlocked your bootloader before doing so and that you might have used the terminal and might be running Ubuntu.
If this is correct it should be no problem for you to:
- With your device powered off, press and hold the volume down button and then the power button simultaneously until the screen turns on to enter "Fastboot mode"
- Connect your device to your PC
- Open a terminal window and type
Code:
fastboot devices
if that does return
Code:
no permissions fastboot
it can be fixed by running fastboot as root from now on, i.e.
Code:
sudo fastboot [...]
- next, enter
Code:
fastboot oem device-info
if the output contains the line
Code:
(bootloader) Device unlocked: true
you are able to flash a custom recovery.
- To flash the recovery go directly dl.twrp.me/mako, and download the latest (topmost) image.
Now, find out where the image is downloaded and open a terminal there.
Then enter this command
Code:
fastboot flash recovery twrp-3.3.1-0-mako.img
(again with sudo if necessary)
- Reboot and you should be good to go
Code:
fastboot reboot

Thanks, that worked fine. Appreciate the step by step instructions.

I'm glad it worked for you

Does it mean, that u have Ubuntu, and android?
If possible can u share the screen shot or TWRP and boot options

[How-to-guide]How to return to a stock ROM with Factory Images

These instructions will help you to return to the stock 2.3.6/4.0.4/4.1.2 using Factory Images for i9020t and i9023
I do not have the device so these instructions might not be exact
1.Boot into the fastboot (adb reboot bootloader)
2.Once in the fastboot, enter fastboot oem unlock
3.The device will display a disclaimer that you need to accept. Use the volume keys to toggle the options. Pressing the power button should confirm your choice.
4.If the device does not restart automatically, restart it through the menu. The device should now be unlocked. You can verify this by seeing the unlocked device icon at the bottom of the Google boot screen during the reboot.
5.Go back to fastboot
6.Download the ROM you need from https://developers.google.com/android/images#soju and unzip it wherever you want
7.In the folder with the unpacked ROM (there should be files like bootloader-crespo-i9020xxka3.img, flash-all.sh, flash-base.sh, flash-all.bat, image-soju-jzo54k.zip, radio-crespo-i9020xxki1.img (depending on the ROM name you downloaded may be different) put the SDK Platform Tools for your OS https://developer.android.com/studio/releases/platform-tools#downloads.
For Linux just run flash-base.sh first and wait until the script works, then run flash-all.sh and wait until the script works.
For Windwos just run flash-all.bat and wait for the script to work
8.After the script works just use fastboot reboot to reboot into the OS