Current builds (starting with r65) are Android 5.0 Lollipop
KitKat is dead and the last stable release was r63, which you're free to use if you're still on 4.4.4.
fastboot flash boot boot_name_img
flash the .zip in the recovery
franco.Kernel updater Free apk: http://forum.xda-developers.com/show....php?t=1867127
Nexus Display Control Free apk: http://forum.xda-developers.com/show....php?t=2424467
Notice for the future OTA from KitKat to Lollipop
The following changes only apply if you have the referenced files, otherwise this is not for you.
1 - Rename /system/bin/thermal-engine-hh.bak to /system/bin/thermal-engine-hh
2 - Rename /system/lib/hw/power.msm8974.so.bak to /system/lib/hw/power.msm8974.so
This ensures the OTA won't fail due to file mismatch. Other changes that you've made on your phone are your responsibility and are outside franco.Kernel scope.
Got any questions that you couldn't find after searching?
Disclaimer to moderators:
Slight OT is fine, but when users decide to act stupid they should be dealt with with the appropriate means - its really annoying for me when OT turns crazy. Please put the warning/ban hammer anytime any of you think there's lack of respect and/or too much unwanted OT crap - but if it doesn't meet this criteria let the OT posts alone. Thank you.