Asus Zenfone 2 Laser ZE601KL gets a new firmware update from it’s manufacturer. The update arrives as firmware version ZE601KL_ WW_V21.40.1220.2161 rolls out via OTA, the OTA can take some time because of regional delays but you must get ready for it, go to Settings > About device > System updates. If the update is available you’ll be notified, just download and install it on your device. The update brings security improvements along under the hood tweaks and fixes for Bluetooth related issues. You can also download the V21.40.1220.2161 update for ZenFone 2 Laser ZE601KL and install it manually.
Official Marshmallow V21.40.1220.2161 for ZenFone 2 Laser ZE601KL
Device Name: Asus ZenFone 2 Laser
Release date: 12 July, 2017
Android 6.0.1 Marshmallow
Software version: V21.40.1220.2161
Process to install official Marshmallow V21.40.1220.2161 on ZenFone 2 Laser ZE601KL
Download the ZenFone 2 Laser ZE601KL V21.40.1220.2161 update firmware file. Here (coming soon)
Now connect your device to PC via USB cable.
Copy the firmware file on your device storage.
Now turn off your device and reboot into stock recovery mode.
Once in recovery, choose “apply update from sdcard” and select the downloaded firmware zip file.
Confirm the install and wait for it to complete.