[GUIDE] HOW to FLASH latest WW/CN/TW | ROOT | UNBRICK |

Does it work ?


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vivix

Senior Member
Jan 19, 2008
92
111
Droitwich Spa
I. Before You Begin Doing Anything
**As with all of these types of tutorials, this may void the warranty of your device. Do it at your own risk.
**Download and install the Asus USB Drivers on your PC, if you haven’t done so yet.
**This should only work on a Windows based PC only.
II. Downloading Required Files
** Necessary tools and Drivers - Mediafire Folder
**Latest OTA form ASUS website : WW_2.17.40.12
** Boot.img, Droidboot.img and Recovery.img from this MEGA Drive posted by Chinaphonearena user and belong to Shakalaca.
** System.img - if you want your phone ROOTed on latest ASUS ZF2 Firmware.
III. Yeah! Im ready to do it
**Plug in your device to your PC using a USB cable.
**Boot your device to fastboot mode Power + Vol Up to enter Bootloader Mode
**Hold down Shift and Right-Click anywhere in Fastboot Folder on your PC and select Open command here. It will launch a Command Prompt Window for you to issue commands to your device.
**When it launches, type in the following command and press Enter (.img files has to be in same folder as fastboot tools):
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash fastboot droidboot.img - droidboot.img is fastboot, and if you somehow will flash corrupted image, you won't be able to boot to fastboot anymore. Thanks to sorg
fastboot flash system system.img - Only if you use Pre-ROOTed system image from MEGA Drive.
IV. Ready to go with OTA!
** Upload WW_2.17.40.12 or latest Firmware OTA ( Full firmware ) file to phone storage (Phone storage/File.zip)
** After uploading .zip OTA file to phone storage, unplug USB cable from phone. You will recieve notification that new OTA UPDATE is avaliable for installation.
When you bought CN version of ZF2 you may have to Rename OTA file from UL-Z00A-WW-2.17.40.12-user.zip to UL-Z00A-CN-2.17.40.12-user.zip to get notification about update avaliable.
** Wait till update will finish (approx 10 - 15 min) . Phone will restart when finished. First boot may take longer.
V. Dam! No Notification!? what now...
** Boot your device to fastboot mode Power + Vol Up to enter Bootloader Mode
** At Bootloader press Vol Up to choose Recovery Mode
** You will see an error message of updating ota. Wait 5 sec and then press Power + Vol Up simultaneously until you see recovery menu.
** Using Vol Down + Vol Up choose ADB mode and connect your phone to PC via USB cable
** You need Fastboot version 1.0.32 and up to make ADB Sideload working properly with Zenfone 2
** Extract Fastboot.zip somewhere at your PC and put OTA update file ( .zip) in same folder as Fastboot.
** Hold down Shift and Right-Click anywhere in Fastboot Folder on your PC and select Open command here. It will launch a Command Prompt Window for you to issue commands to your device.
** Use command : adb sideload filename.zip
** At 100% it will go back to Recovery Mode main menu. Restart your phone.
** Done !

** Hit THANKS button and RATE this thread for 5 STARS !

Credits to : Chinaphonearena for posting a link to latest pre-rooted system images.
Credits to : Shakalaca for making it all possible

Remember ! You should only do this at your own responsibility.
Please note !
If you posting somwhere else my guide. Please give me a Credit or just link to this thread. Thanks

Please read all pages if you have a issue with guide. I believe other people had it as well and its already solved.​
 
Last edited:

mhp1995

Senior Member
Jan 5, 2014
481
474
New Delhi
1) Download image files http://www.mediafire.com/folder/setyy42t2cymy#dy87k1a0f8m81
2) Boot to fastboot mode (Power + Vol Up)
3) Using ADB command prompt flash files by using fastboot commands :
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash fastboot droidboot.img
4) reboot phone
5) upload 2.15.40.10 OTA file to phone storage (http://dlcdnet.asus.com/pub/ASUS/Ze...user.zip?_ga=1.221138204.542811237.1430874705)
6) Update via notification about new update avaliable
7)Wait till update will finish (approx 10 min)
8)Enjoy

Say thanks if i helpedI lost 6 hours to achieve this.

Are you sure this works i mean there are thousands of threads regarding this issue but none of them work..Can someone with CN version confirm the working of this method....
 

vivix

Senior Member
Jan 19, 2008
92
111
Droitwich Spa
I bought phone on Aliexpress website. Phone has WW OTA but update via Wi-Fi was impossible. Firmware was 13.40.13 so i think people with that firmware had CN version at start, then sellers updated it to 13.40.13 WW and sended to buyers. Following my method you can update to the latest WW.
 
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vivix

Senior Member
Jan 19, 2008
92
111
Droitwich Spa
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Chinaphonearena

Senior Member
Dec 8, 2013
273
250
I agree.
But your method is only for pre-rooted system.img with 2.13.40.13 firmware.
I posted method for full OTA firmware upgrade.

Yes, it is similar ;))

The method posted can be done with any system.img (don't have to use rooted ROM), there's no need to do the OTA update as its already the latest ROM (though it will be compatible with future OTA updates, thanks to the ROM creator), and you end up rooted.

They are essentially the same, except for flashing system.img at fastboot instead of doing OTA update. Take your pick. If not caring about root, your method is certainly quicker, as there's no need to DL the huge system.img file.
 
Last edited:

iancjc

Member
Aug 29, 2007
44
13
confirmed works fine on a rooted CN version

Hi,

I followed all the steps and apart from thinking I'd bricked it (the system update screen was sat with the blue bar unmoved for 15 minutes) . It's just completed perfectly.

Really great advice - thanks - I got 2 of these handsets yesterday via ebay both came rooted and it turns out they are CN models but had WW software on them - as per your model - prior to reading your post I was probably going to try and send them back.

I hope and presume for future updates I can continue to use this method?

will do 2nd one now.

Cheers

Ian
 

amirsharifloo

New member
Sep 26, 2010
3
0
Thanksssssssssssssssssssss

Honestly, last time that I tried to have a custom ROM or in any other words, last time I installed and used ( I'm still using it) it was on my samsung galaxy tab(the first galaxy tab of all time) two years ago!

At first I was puzzled in all of these forum pages. I started to change my CN rom to WW Rom yesterday at 2 o'clock. Since I started this process, I just ate dinner and slept for 5 hours. The rest of the time I was trying to install 7 different roms which are available in this forum or asus zenfone forum by 3 different methods of loading a ROM! NONE OF THEM WORKED CORRECT AND COMPLETELY. so I had to start again and read. I can easily say that I've read more than a fat ass book for this process (most of them were duplicates, but I was looking for s.th new among them...)

Your method worked just nolw (@ 1 pm) and I'm really thankful. Honestly I was so bumped and I was thinking to send this device back, just an hour ago I saw your way for the second time and I just decided to try this time as the last way, before returning it!! thank u again for giving me a zenfone ;)

keep up the good work ;)
 

iancjc

Member
Aug 29, 2007
44
13
Confirmed ok on 2nd handset - red CN model 32gb 4gb ram. :D:D:D:D

It has removed the root access though... Supersu app has gone. and Root checker confirms not rooted.

Which is ok because I can now use Skygo app on the phone - really wasn't expecting that to work!
 
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vivix

Senior Member
Jan 19, 2008
92
111
Droitwich Spa
Thanks guys for good news that it work for you too. I hope that TUT will help others to get rid of 13.40.13 which drain battery as $%^&. Without root it's hard for efficient battery save but atm i use battery doctor from G market and I need to say after 4h it drained 3% battery with turned WiFi. I just wait for proper root tutorial.
 

Chinaphonearena

Senior Member
Dec 8, 2013
273
250
Thanks guys for good news that it work for you too. I hope that TUT will help others to get rid of 13.40.13 which drain battery as $%^&. Without root it's hard for efficient battery save but atm i use battery doctor from G market and I need to say after 4h it drained 3% battery with turned WiFi. I just wait for proper root tutorial.

Several proper root tutorials already posted. Just follow your own tutorial but flash the pre-rooted system.img. Bam, done.
 
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vivix

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Jan 19, 2008
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Last edited:
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ddfault

Senior Member
Jul 19, 2010
118
69

1) Download 2.15.40.10 .img files from : http://www.mediafire.com/folder/setyy42t2cymy#dy87k1a0f8m81
2) Boot to fastboot mode (Power + Vol Up) to enter Bootloader Manu and connect it to PC using USB cable provided.
3) Download ADB TOOLS : http://tools.asuszenfoneblog.com/2014/10/adb-fastboot-tool.html
TIP : At Flashtool/fastboot folder <b>press Shift+Right Click then Open Command Here
Using ADB command prompt flash files by using following fastboot commands :
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash fastboot droidboot.img

4) Reboot phone connected to PC
5) Upload 2.15.40.10 Firmware OTA file to phone storage (Phone storage/File.zip) :
http://dlcdnet.asus.com/pub/ASUS/Ze...user.zip?_ga=1.221138204.542811237.1430874705
6) After uploading .zip file to phone storage, unplug USB cable from phone.
You will recieve notification that new OTS UPDATE is avaliable for installation.
7)Wait till update will finish (approx 10 - 15 min) . Phone will restart when finished.
Dont touch phone because you can mess up something .
8)Enjoy latest V2.15.40.10 WW Firmware.

Say THANKS if i helped !
I Lost 6 hours to achieve this and only THIS method working for 100%.


You will lose your ROOT.
Be careful! Pre-rooted system.img widely avaliable have glitch where when you update superuser app you will soft/hard brick your phone, bootloops etc.
Above method work also as UNBRICK method.

You fail to give credit to those who made this possible, especially shakalaca.


This is my version of the steps:

I recommend using the tools directly from google. (Links fixed 2015MAY08)
These include fastboot and adb
Windows SHA1:720214bd29d08eb82673cd81a8159b083eef19d7
Linux SHA1:b78be9cc31cf9f9fe0609e29a6a133beacf03b52
MacOS SHA1:ddc96385bccf8a15d4f8a11eb1cb9d2a08a531c8

As far as steps, I can only speak of the ZE551ML. Start with an unrooted OS.
1.) Download the ADB and Fastboot tools from google (see links above). Download the pre-rooted from from shakalaca in post #1 (If you download the 200MB split version, Windows File Explorer will allow you to open the .zip and copy the .img file out.)
2.) Download the stock full ROM WW_2.15.40.10 directly from support.asus.com
3.) Plug the phone into the PC via USB and copy the UL-Z00A-WW-2.15.40.10-user.zip onto the phone.
4.) The phone will notify you that there is an update:
PtjMi7

5.) When you select the notification you will be prompted of which file to use in the update:
X53mgW

6.) Hit OK and the phone will reboot and update everything it needs to update per ASUS. (This will include the fastboot/droidboot image, boot, recovery, system, silentlake, and modem firmware.)
7.) Once the update has completed, unplug and power off the phone.
8.) While holding volume up, press the power button until the phone vibrates. At this point release the power button but keep holding the volume up button until the screen flickers to the fastboot menu. Release the volume button when the screen flickers.
9.) Plug the phone back into your computer, open a command prompt and navigate to where you extracted the google tools and the system.img.
10.) Run:
fastboot devices
11.) You should see a your device listed, if you do not, your device is not in fastboot mode.
12.) Assuming you see your device listed in Step 10, run:
fastboot flash system system.img
This will erase your current system partition and then start writting the new image to the partition. Fastboot will split the system.img file into ruffly 500MB chucks and send them to your device.
13.) Once its finished, you can select boot normally on your phone by pressing the power button or run:
fastboot reboot[/QUOTE]
 
Last edited:

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  • 71
    I. Before You Begin Doing Anything
    **As with all of these types of tutorials, this may void the warranty of your device. Do it at your own risk.
    **Download and install the Asus USB Drivers on your PC, if you haven’t done so yet.
    **This should only work on a Windows based PC only.
    II. Downloading Required Files
    ** Necessary tools and Drivers - Mediafire Folder
    **Latest OTA form ASUS website : WW_2.17.40.12
    ** Boot.img, Droidboot.img and Recovery.img from this MEGA Drive posted by Chinaphonearena user and belong to Shakalaca.
    ** System.img - if you want your phone ROOTed on latest ASUS ZF2 Firmware.
    III. Yeah! Im ready to do it
    **Plug in your device to your PC using a USB cable.
    **Boot your device to fastboot mode Power + Vol Up to enter Bootloader Mode
    **Hold down Shift and Right-Click anywhere in Fastboot Folder on your PC and select Open command here. It will launch a Command Prompt Window for you to issue commands to your device.
    **When it launches, type in the following command and press Enter (.img files has to be in same folder as fastboot tools):
    fastboot flash recovery recovery.img
    fastboot flash boot boot.img
    fastboot flash fastboot droidboot.img - droidboot.img is fastboot, and if you somehow will flash corrupted image, you won't be able to boot to fastboot anymore. Thanks to sorg
    fastboot flash system system.img - Only if you use Pre-ROOTed system image from MEGA Drive.
    IV. Ready to go with OTA!
    ** Upload WW_2.17.40.12 or latest Firmware OTA ( Full firmware ) file to phone storage (Phone storage/File.zip)
    ** After uploading .zip OTA file to phone storage, unplug USB cable from phone. You will recieve notification that new OTA UPDATE is avaliable for installation.
    When you bought CN version of ZF2 you may have to Rename OTA file from UL-Z00A-WW-2.17.40.12-user.zip to UL-Z00A-CN-2.17.40.12-user.zip to get notification about update avaliable.
    ** Wait till update will finish (approx 10 - 15 min) . Phone will restart when finished. First boot may take longer.
    V. Dam! No Notification!? what now...
    ** Boot your device to fastboot mode Power + Vol Up to enter Bootloader Mode
    ** At Bootloader press Vol Up to choose Recovery Mode
    ** You will see an error message of updating ota. Wait 5 sec and then press Power + Vol Up simultaneously until you see recovery menu.
    ** Using Vol Down + Vol Up choose ADB mode and connect your phone to PC via USB cable
    ** You need Fastboot version 1.0.32 and up to make ADB Sideload working properly with Zenfone 2
    ** Extract Fastboot.zip somewhere at your PC and put OTA update file ( .zip) in same folder as Fastboot.
    ** Hold down Shift and Right-Click anywhere in Fastboot Folder on your PC and select Open command here. It will launch a Command Prompt Window for you to issue commands to your device.
    ** Use command : adb sideload filename.zip
    ** At 100% it will go back to Recovery Mode main menu. Restart your phone.
    ** Done !

    ** Hit THANKS button and RATE this thread for 5 STARS !

    Credits to : Chinaphonearena for posting a link to latest pre-rooted system images.
    Credits to : Shakalaca for making it all possible

    Remember ! You should only do this at your own responsibility.
    Please note !
    If you posting somwhere else my guide. Please give me a Credit or just link to this thread. Thanks

    Please read all pages if you have a issue with guide. I believe other people had it as well and its already solved.​
    5
    Works fine. We've published a similar method. I recommend using the latest rooted ROM. Note, your LTE 4G bands won't be changed with this method.

    Have written out the steps in detail for novice users. Includes setting up adb etc: http://www.chinaphonearena.com/forum/showthread.php?tid=10253
    5

    1) Download 2.15.40.10 .img files from : http://www.mediafire.com/folder/setyy42t2cymy#dy87k1a0f8m81
    2) Boot to fastboot mode (Power + Vol Up) to enter Bootloader Manu and connect it to PC using USB cable provided.
    3) Download ADB TOOLS : http://tools.asuszenfoneblog.com/2014/10/adb-fastboot-tool.html
    TIP : At Flashtool/fastboot folder <b>press Shift+Right Click then Open Command Here
    Using ADB command prompt flash files by using following fastboot commands :
    fastboot flash recovery recovery.img
    fastboot flash boot boot.img
    fastboot flash fastboot droidboot.img

    4) Reboot phone connected to PC
    5) Upload 2.15.40.10 Firmware OTA file to phone storage (Phone storage/File.zip) :
    http://dlcdnet.asus.com/pub/ASUS/Ze...user.zip?_ga=1.221138204.542811237.1430874705
    6) After uploading .zip file to phone storage, unplug USB cable from phone.
    You will recieve notification that new OTS UPDATE is avaliable for installation.
    7)Wait till update will finish (approx 10 - 15 min) . Phone will restart when finished.
    Dont touch phone because you can mess up something .
    8)Enjoy latest V2.15.40.10 WW Firmware.

    Say THANKS if i helped !
    I Lost 6 hours to achieve this and only THIS method working for 100%.


    You will lose your ROOT.
    Be careful! Pre-rooted system.img widely avaliable have glitch where when you update superuser app you will soft/hard brick your phone, bootloops etc.
    Above method work also as UNBRICK method.

    You fail to give credit to those who made this possible, especially shakalaca.


    This is my version of the steps:

    I recommend using the tools directly from google. (Links fixed 2015MAY08)
    These include fastboot and adb
    Windows SHA1:720214bd29d08eb82673cd81a8159b083eef19d7
    Linux SHA1:b78be9cc31cf9f9fe0609e29a6a133beacf03b52
    MacOS SHA1:ddc96385bccf8a15d4f8a11eb1cb9d2a08a531c8

    As far as steps, I can only speak of the ZE551ML. Start with an unrooted OS.
    1.) Download the ADB and Fastboot tools from google (see links above). Download the pre-rooted from from shakalaca in post #1 (If you download the 200MB split version, Windows File Explorer will allow you to open the .zip and copy the .img file out.)
    2.) Download the stock full ROM WW_2.15.40.10 directly from support.asus.com
    3.) Plug the phone into the PC via USB and copy the UL-Z00A-WW-2.15.40.10-user.zip onto the phone.
    4.) The phone will notify you that there is an update:
    PtjMi7

    5.) When you select the notification you will be prompted of which file to use in the update:
    X53mgW

    6.) Hit OK and the phone will reboot and update everything it needs to update per ASUS. (This will include the fastboot/droidboot image, boot, recovery, system, silentlake, and modem firmware.)
    7.) Once the update has completed, unplug and power off the phone.
    8.) While holding volume up, press the power button until the phone vibrates. At this point release the power button but keep holding the volume up button until the screen flickers to the fastboot menu. Release the volume button when the screen flickers.
    9.) Plug the phone back into your computer, open a command prompt and navigate to where you extracted the google tools and the system.img.
    10.) Run:
    fastboot devices
    11.) You should see a your device listed, if you do not, your device is not in fastboot mode.
    12.) Assuming you see your device listed in Step 10, run:
    fastboot flash system system.img
    This will erase your current system partition and then start writting the new image to the partition. Fastboot will split the system.img file into ruffly 500MB chucks and send them to your device.
    13.) Once its finished, you can select boot normally on your phone by pressing the power button or run:
    fastboot reboot[/QUOTE]
    4
    Thanks for the response. I did the following based on what you said and got the following screenshots (sorry if they are a bit unclear):
    1. In fastboot I flashed - recovery.img, boot.img, droidboot.img and system.img. They all flashed successfully.
    2. I then selected to boot into recovery which lead to the error screen and upon pressing the Power and Vol buttons, I got the following list of errors and was therefore unable to reach recovery to choose to wipe cache or factory reset.


    IMG_20150520_190535.jpg

    IMG_20150520_190538.jpg

    IMG_20150520_192214.jpg

    ----------------------------------------------------

    EDIT : I managed to solve the problem and boot into recovery (which was caused after I tried to wipe the cache) by doing the following.

    1. I downloaded the boot.img, droidboot.img, and recovery.img of WW_2.15.40.13 from the MEGA link
    2. (Following from the guide posted) I booted into fastboot and plugged in the phone to my computer and entered the following commands to flash the various stuff -

    fastboot flash recovery recovery.img
    fastboot flash boot boot.img
    fastboot flash fastboot droidboot.img
    fastboot erase userdata
    fastboot erase cache
    fastboot reboot


    I was then able to boot into recovery and flash (I'm still flashing) the stock WW_2.15.40.13 firmware via ADB. (The firmware was downloaded from ASUS's website)
    I believe the problem solver was the fastboot erase cache command. I hope this works for those in the future.

    EDIT 2 :
    I can confirm this works and I am able to boot back into Android normally.
    I believe it can also be modified to use the pre-rooted system image by using the appropriate fastboot command
    3
    Im really happy that guide helped so many people now. Great !
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