Asus had released a new OTA update on the 24th of Feb 2016 i.e., Version V1.17.40.1106. The update had so many issues such as, the mic-issue, frequent lagging issues, and most importantly, Asus revoked third party theme support in this latest update, which upset most of the Asus users. So now as we all know, there is no downgrade version available for Asus Zenfone 2 Laser(ZE550KL).
We have still found a few methods to downgrade the phone. Manufacturers don’t support downgrading to old software versions even though the current version is buggy, but there’s no other way to fix these new issues besides downgrading the firmware version. This guide was used to downgrade 3 Zenfone 2 Laser devices to make sure it works perfectly & can be implemented without any trouble.
Warning: If anything goes wrong and you end up with a bricked or semi bricked device, then neither our site or any app developers mentioned will be responsible.
Note: I downgraded my Zenfone 2 laser by following this method without any data loss. But for safety reasons, I would advise you to take backup of your important data.
Prerequisite for Downgrading Asus Zenfone 2 Laser (ZE550KL) Firmware:
- Additionally, you must have a windows PC.
- Install USB drivers for your Asus Zenfone 2 Laser ZE550KL.
- Enabled USB Debugging in Asus Zenfone 2 Laser: You can do this by going to Settings >> About and tap multiple times continuously on “Build number” to active “Developer options” and then Go to Settings >> Developer options and enable “USB debugging” option.
Downloads:
- Download Minimal ADB Fastboost Tool.
- ADB & Fastboot Driver (Learn How To Install It Here)
- Stockboot.img
- Firmware Version Which You want To Install.
How To Downgrade Asus Zenfone 2 Laser (ZE550KL) With Rooting
Step 1: Open updater-script from the firmware zip, you can find it in /META-INF/com/google/android inside the .zip
Step 2: look at the first line (!less_than_int(1457089250, getprop(“ro.bui….
Step 3: Don’t worry if your updater-script has a different value to the one given above (1457089250) as the above number is just an example.
Step 4: Install ES file explorer or any other root file manager (if you don’t already have one)
Step 5: Go to /system (the system folder) using the root file manager and grant root access if prompted.
Step 6: Open build.prop file as text and then look for the line “ro.build.date.utc=1446585430”
Your phone will have a different value as 1446585430 is just an example.
Step 7: Now increase this value in build.prop to any number higher than the value you noted from updater-script.
For example, if my updater-script has 1457089250 and buil.prop has 1446585430, Change the number to a higher or bigger number such as 1546585430 or 1448585430 or 1457089251. A number higher than 1457089250 will work in my case.
Step 8: Now reboot to recovery (vol down + power)
Step 9: Select “apply update from external sd card,” select your firmware zip file, and then select yes to flash. It will take 5-10 min
Step 10: It is recommended that you perform a factory or data reset. By doing this, you may end up saving 30-40 mins.
How to downgrade Asus Zenfone 2 Laser (ZE550KL) Without Rooting
Step 1: Download the above files & Move Firmware.zip file to root directory of your SD card
Step 2: Extract ‘‘ADB Fastboot Tool.rar.’’
Step 3: Move Stockboot.img into extracted ‘‘ADB Fastboot Tool.rar’ folder.
Step 4: Now, in the ADB Fastboot folder, open command windows by Pressing the right click while keeping the shift button pressed. >> Open command window here. You can refer to the below image.
Step 5: Now, Enter the following command in Command Window. (Click Ok if Prompt on Your Device after entering the below command)
adb devices
Step 6: Now to boot your device into fastboot mode (To flash/install old firmware). Enter the below command.
adb reboot bootloader
Step 7: Now its time to flash stock boot.img file. Enter the below command. By Flashing this boot.img file your device will automatically reboot into Asus Stock Recovery Version WW1.16.40.763. If you face any error, that says, “To Unlock Your Device!!” Just Click Here and Follow the First Two Steps Of That Post. And Try Again Using This Command.
Step 8: Now in Recovery, select “Apply Update From SD Card.” Locate the firmware.zip file And flash it.
Step 9: The process might take 4-5 mins. After successfully installation, reboot your device and check Settings > About phone> Software information. You have successfully downgraded your Asus Zenfone 2 laser without rooting.
Conclusion
Remember to disable the auto update option on your phone. An auto update would spoil all your hard work. You can install the next update when the update has become stable and no longer has those annoying bugs.
As you have now downgraded to the previous version, its time to enjoy third party themes. You can check out a list of all third party themes for Zenfone models. If you need any help, you can comment below. Peace!
![[Solved] Unable to Mount (Error) “/asdf/recovery/” in Android Recovery](https://devsjournal.com/wp-content/uploads/2016/12/Solved-error-in-asdf-recovery-in-Android-768x443.jpg)
i shuld done everything.after flash my phon is now Restarsing.what can i do now ?
change the step 7 command to ” fastboot flash recovery StockBoot.img” even your is locked..i try mine…works….!!!!!
i not flashed boot.img i just used it for installation purpose. so i used boot not flash.!! tx for your suggestion..!!
Will it void the warranty by using this method?
if You unlock Bootloader Your Device Warrenty Will Gone..
which version of firmware will i download
Which Version You Want to use..???
Download that Version From Official Asus Website And Install it Using Above Method.
Can u post a guide to downgrade from marshmallow to lollipop(1.11 or 1.13)…
IF you could share stock recovery for 1.11 firmware that’d be also enough for me..
Thanks in advance appreciate your work man !!
Method For Downgrading is Same For all version. Go Through This Guide. Enjoy 😀
I am using zenfone laser ZE550KL on android m version 1.17 and i am trying to unlock my bootloader using apk file but it end up with error and unfortunately stopped message so how can i unlock my bootloader please help me.
Plz Re Download App And try Again. Because I Personally Used that tool in Version 1.17. its Working Fine. 😀
thanks for the tutorial bro!!
Your Welcome.
Hai
Is this method unlock bootloader ?, If Yes how can we re lock bootloader ?
in step 7. If you got Error Something Saying To Unlock Your Device!! Then you have To unlock Bootloader.!! And There is No Way to Relock bootlodear..!!
How can I check Bootloader unlocked ?
in fastboot mode.. use This Command
fastboot OEM device-info
This Will Show You status Of Bootloader
Asus Zenfone 2 laser I’ve been at the root, so there’s no asus update. he must use adb sideload
if You want to upgrade/downgrade Your Device Just Download firmware Version Zip From Asus Website And Put it into Sd Card. you Got Notification On your device that System Update File Found. Just Click On that And Install It.. Done
Hi do you have files for laser 5.0 ZE500KL ? I want to downgrade it too. Android MM sucks, made my phone laggy. Thanks
No Need Any Special Tools.. Just Read It..!!
Requirements:
– SD CARD
– a PC (windows/linux)
– firmware version Download Here
The procedure:
1. Download the firmware on your PC
2. Rename it to MOFD_SDUPDATE, enable the view extension of the files option and check that the file has only .zip, .zip.zip is not accepted and the procedure will fail. (you should have MOFD_SDUPDATE.zip)
3. Copy the MOFD_SDUPDATE.zip on the sd card
4. Shut down your phone and insert the sd card
5. To boot in recovery mode you need to:
a. Hold the power button and volume down key all together
b. When the first Asus logo appears, release the keys.
6. Go to update from sd card and located the MOFD_SDUPDATE.zip
7. Then flash
Now the system will boot as usual but the settings and your files will remain intact.
Go to About and check the software version, it should be now 12.8.5.106
Come back if you succeed.
I’ve noticed that the update comes if you go to system update, so be careful.
what if I didn’t rename MOFD
Nothing. its Not Necessary to Change Name. but Its Just For Our Guide Purpose. 😀
Computer change name, and copy phone. Phone not change name.
Our ze550kl will be rooted write if we flash boot.img..
No.. it will just Change Your Recovery Version.!! if You Only Flash Boot.img
i rooted my phone then i decided to go back to stock recovery then when i go to apply sdcard update it say that invalid arguent and my sdcard not detect anyone help me pls
Plz Double Check Stock Recovery You Installed is For Your Device or By Mistake Installed Wrong Recovery..!! try Flashing Recovery Again..!!
Why we need a boot img. I saw tutorials without that
The boot.img Stands For Kernel..!! We Can Not apply update To v.1.16 on Kernel V.1.17 so.. need to Kernel v.1.16 first.. Thats why we Maintain To Flash Boot.img
it will work or not ?? i think it should requiure to clear the cache …. should i clear the cache or not?
Yes.. This Method Is Working Fine.. You Can Try It..!! And For Your Kind Info Clear Cache is Not Mandatory in this Method.. you Can Skip Clear Cache Step.. it Not Required..!!
Hi I rooted my ZenFone 2 laser ze550kl couple of weeks ago . I tried to unlock bootloader using unlocking app but it ends with an error saying try again .I unrooted it and tried but no result .I am here to ask u the method and link for flashing original firmware for ze550kl or any other method for unlocking bootloader
You Can Follow This Method For Unlocking Bootloader, Rooting & Installing Recovery.!! Click Here