Can not update Zenfone Laser ZE500KL?

For some reason I couldn't update my device because it threw me errors each time I tried both through OTA  and manually. The errors where mainly relating to mounting such as
E: failed to mount /asdf (Invalid argument)

So I went searching in XDA and found a workaround. Here it is:

 Thanks to malachiseelam in XDA
1. Enable USB debugging in your device and accept the PC signature prompt on your phone
2. Download ADB and Fastboot into a folder
3. Download the latest firmware and place it in the above folder. Rename it to update.zip for convenience.
4. Download and place the recovery.img of the Lollipop firmware (1531) into the same folder
5. Open cmd.exe in Windows and change the directory to the folder above by giving the command chdir "your folder location" and press enter. For example if mine is in desktop then the command would be chdir C:\Users\user\Desktop\Folder

6. Check if your device is recognized by typing adb devices. If it shows then all good.
7. Boot into Fastboot Mode by switching off and pressing volume up button with the power button (Release power button once you see the screen or after vibration)
8. Type adb fastboot flash recovery recovery.img
9. Boot into the now installed recovery by pressing volume down button and the power button.
10. Choose "Aply update through ADB", confirming by pressing the power button
11. The device will wait for instruction. Here just type adb sideload update.zip

12. The installation will start in your device.
Source : https://forum.xda-developers.com/zenfone-2-laser/help/fix-asus-zenfone-2-laser-ze550kl-t3579069
Good luck.