Do I need to factory reset to root galaxy note 4 SM-N910V? I have the Samsung Galaxy note 4 for Verizon. I believe it is the developer edition because the model # is SM-N910V. I am trying to either install CFs auto root or install TWRP recovery and root from there. So far both fail in Odin. here's the log for Odin for CF auto root,

&lt;ID:0/003&gt; Added!!
&lt;OSM&gt; Enter CS for MD5..
&lt;OSM&gt; Check MD5.. Do not unplug the cable..
&lt;OSM&gt; Please wait..
&lt;OSM&gt; CF-Auto-Root-trltevzw-trltevzw-smn910v.tar.md5 is valid.
&lt;OSM&gt; Checking MD5 finished Sucessfully..
&lt;OSM&gt; Leave CS..
&lt;ID:0/003&gt; Odin v.3 engine (ID:3)..
&lt;ID:0/003&gt; File analysis..
&lt;ID:0/003&gt; SetupConnection..
&lt;ID:0/003&gt; Initialzation..
&lt;ID:0/003&gt; Get PIT for mapping..
&lt;ID:0/003&gt; Firmware update start..
&lt;ID:0/003&gt; SingleDownload.
&lt;ID:0/003&gt; recovery.img
&lt;ID:0/003&gt; NAND Write Start!! 
&lt;ID:0/003&gt; cache.img.ext4
&lt;ID:0/003&gt; FAIL! (Auth)
&lt;ID:0/003&gt; 
&lt;ID:0/003&gt; Complete(Write) operation failed.
&lt;OSM&gt; All threads completed. (succeed 0 / failed 1)


I did a samsung update the other day and went from NI1 to NJ5, i guess that is the update version. Does updating remove the unlocked bootloader? Do I need to factory reset to be able to install CF auto root and TWRP?
Samsung devices usually have no locked bootloader so you won't remove that. Official updates do however remove any trace of a working root.Your device is nowhere near a developer device but more a custom device served with a custom firmware of Verizon noticeable on the V in your model no.

Because of that custom Verizon model it is possible that the bootlader may be locked as you can see in the log where it says &lt;ID:0/003&gt; FAIL! (Auth).
This means you are not authenticated to flash anything on your device which leads me to the assumption that your bootloader is Verizon-specific and therefore locked.