[Q] How to update from stock 4.4.4 rooted to 5.0.x with root ? topic

Hi all,

I have my N910F 4.4.4 rooted, so no OTA update,
Whats the best way to update to stock Lollipop 5.0.2 without losing root ?

Is it possible to install the Stock ROM via philz recovery ?

I have never install stock Roms via costume recovery.
Not sure if I lost root on this process