Asus Zenfone 2 laser ZE550kl VOLTE firmware update from WW-21.40.1220.2179 to WW-21.40.1220.2192

I have updated my Asus zenfone 2 laser ze550kl firmware from WW-21.40.1220.2179 to WW-21.40.1220.2192. Please find the steps that I have followed for updating the firmware to latest version.

Steps:
• The batter charging should be above 50%.
• To install latest firmware two folders required Tools (https://drive.google.com/file/d/0B0aLSwTxUBYETFVvQU1ZUHNFaEE/view ) and Asus zenfone 2 laser firmware (https://www.asus.com/in/Phone/ZenFone-2-Laser-ZE550KL/HelpDesk_Download/).
Please find the screens shot below.

• Copy the tools folder to your personal computer as shown in above screen shot.
• Copy the Zenfone 2 laser latest firmware to SD card .

• Enable USB debugging in Zenfone 2 laser. To enable developer options click the Build number for 7 times. To enable debugging options go to settings - > Developer options -> USB Debugging.

• Power off the phone.
• Press power button and volume up button simultaneously to enter into Fast boot mode.

• Attach data cable to Personal computer.
• Open the Tool folder in PC and click the flast-all.bat file this will open command window and run commands and close automatically once the commands executed successfully.

• Remove the data cable connection from the PC.
• Remove the phone battery and wait for 5 sec and insert the batter again.
• Press power button and volume down button simultaneously to enter into recovery mode.
• Select the option Apply update from SD Card. Use volume button to move up and down and the power button to select the option.

• Select the firmware zip file and press power button. Firmware updating will start automatically.

• The above process will take around 10 to 15 minutes to complete the installation.
• After completion of the installation reboot phone and your phone updated to latest firmware.

• Take a back up of your personal data and do a Factory Reset.

Asus Zenfone 2 Laser ze550kl Forum

Asus has official forum site where we can post our queries related to smartphone like firmware upgrade issues , app issues , battery draining issues, mobile performance issues etc. In the forum if any use has similar issues and solution then that will helpful for others to resolve their issues.

The asus forum link is https://www.asus.com/zentalk/forum.php

Please find the Asus zenfone2 laser forum path in the below
https://www.asus.com/zentalk/in/forum.php?mod=forumdisplay&fid=138&page=1

Similar to above zenfone 2 laser you can also find your smartphone forum by selecting the phone model.