How to install 6.0.1OTA update on a rooted nexus 5 My Nexus 5 is rooted. I received the 6.0.1 OTA update but when I try to install the update (I just clicked install link when the update finished downloading), the device restarts and goes to the TWRP screen and doesn't install the update.

Can anyone tell me how I can get the update to install?
You cannot install an OTA update on rooted device because SuperSU changes some statement in install-recovery.sh to run itself on boot. 

To install OTA you need to install factory image available at https://developers.google.com/android/nexus/images?hl=en

If you dont want to loose your apps and data. Simply edit the script flash-all.bat and remove 

-w


From

fastboot -w update image-hammerhead-*.zip


Installation script file name will differ according to your OS.

You will loose root access and TWRP after going through above method as there's no other way to install OTA because all system files should be intact for successful installation of OTA.