Triangle Away! It works again in here.
As you know Towel root is the only method so far to root the Verizon Note 3 OTA NC4 rom.
After NC4 is rooted and SuperSU installed, my phone started showing the "Custom" logo during the boot.
To get rid of this logo during the boot, download Chainfire's Triangle Away at http://forum.xda-developers.com/gala...v3-26-t1494114 and try to reset the flash counter even it shows '0' and reboot.
After the Towel root applied, Triangle Away shows that current system status is modified!
Now "Custom" logo disappears during the boot and current system status from Triangle Away shows 'official'. Now my phone looks like 100% stock rom with root.
All credit goes to Chainfire.
How to install SuperSu 2.0 on rooted NC4 stock rom
Chainfire just released SuperSu 2.0 update apk. In most case, you will see the "update binary" messages if you download APK from Play store and install it. It seems like this problem could be solved by using alternative way.
Download the Chainfire's SuperSu 2.0 zip file from his website - http://download.chainfire.eu/supersu and unzip/extract the Superuser.apk file from common folder. Copy the file to your sdcard and install it.
It will ask you to update the binanry and select the just the normal way, then reboot.
In my case, it does not ask me to update the binary any more. When I used the play store APK to update or install the Super SU, it did not update the su file at /system/xbin/su binary but when I used the supersuer.apk to install SuperSu, it updated the su file. Bingo!