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Arulkumar IND Level 6 | All posts
ZenFone2 Bug Report
Model: ZE550KL
Firmware/APP Version: N
Frequency of Occurrence: N
Rooted: Yes
APP Name: N
Screenshot: -
I completely hate asus ...i am totally disappointed for its performance......i am struck in 1615 update u team of asus asking to update manually its also failure and is this is a good way to handle customer for manual update ???????????really upset more real good answer from u asus team ......JUST ASKING TO MANUAL UPDATE AND RESET ITS NOT SUITABLE FOR ALL PEOPLE ....really upset much....please guys requesting u too solve this problem by a new update as soon as possible by OTA ...........plz provide OTA update those who strucks in 1615 update like me please .....i hope u might understand my sadness....need help ASUS TEAM....
IND Level 1 | All posts
Yes..I've also this problem.. please need an update
IND Level 5 | All posts
Facing the same issue. Tried on my Dad's ZenFone Laser ZE550KL.
IND Level 5 | All posts
Be patient. they will give you some way.
For me the update happened and thank god for that but I see many are facing it. Maybe its a server issue from there side or something. Wait
IND Moderator | All posts
Hi Arul,

You will need to update manually.

1708 version is the latest available on support website.

Manual Update
You can also go to ASUS official website to download newer firmware and instruction manual.

    Please make sure the firmware SKU you download is conformed to what on your phone, eg., WW -> WW, CN -> CN, TW -> TW. Incorrect SKU will lead to update failure.
    You can not change the SKU from one to another, eg., WW -> TW, and also can not downgrade your firmware, eg., V2.20.40.13 -> V2.19.40.18.
    During update process, please charge your phone with AC adaptor or make sure the phone has at least 15% battery life.

Steps for update:
1. Go to ""Need Help?"" page of ASUS official website to download ZIP file of firmware.
    Note: Double click the ZIP file after downloading is completed. If the content is another intact ZIP file (as shown in red on picture below),
              please upzip the file again.
             If the content is not an intact ZIP file (as shown in yellow), you do not have to do anything.
             Close the ZIP file after check.

2. Connect your phone with PC via micro USB cable, and copy the ZIP file to the root directory of internal storage of phone.

3. Detach micro USB cable from the phone to make the notification for firmware update poped up on status bar.

4. Tap ""System Update File Detected..."" and follow steps to update firmware.

Note: Steps or photos shown above may have variation by different models.

For some upgraded versions that have great difference, e.g., from Jelly Bean (Android 4.3) to KitKat (Android 4.4),
you may need to upgrade to a ""bridge version"" in advance to proceed.
Please see picture below for example.

Arulkumar IND Level 6 | All posts
Hello max 1708 is an vww version ..i had ww 1516...does 1708 work for me say soon
IND Level 1 | All posts
Check This It helped me out and new MM update is more stable
IND Dr.Zen | All posts
After my phone's Motherboard change I never got any OTA.
Now I am in 1516. ADB is not working . SDcard Update method is not working. How do we downgrade to get to the latest ? Asus You should better come up with some solution.  
Arulkumar IND Level 6 | All posts
Binaya download ww 1708 in internal memory and reboot and install it....oresle u visit service center its best for u
IND Level 2 | All posts
Last edited by sahur552 on 2016/7/9 22:08

Im facing same problem...update is failure in manual mode..
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