By default /home/openhabian is only accessible by the openhabian user.
Do the following
chmod 0755 /home/openhabian
chmod 0755 /home/openhabian/jarmodify
Ok, I removed the ZW binding vi UI, copied the modified jar to addons, ran feature:install openhab-transport-serial, then restarted openhab. I think that process worked because all of my Z-Wave devices are available and I was able to remove and re-add one of the new 620 locks.
However, the lock (with a new node ID) still says “Unknown Device”. I’m going to go through the jar update process again when I have a chance to ensure I didn’t miss something (I used the ks620_0_0.xml file you attached previously).
Not sure if you saw my previous message, I had the same permissions issue
Thank you @bcarp! After re-installing the ZWave add-on and getting the new bundle ID, this resolved the permission error on bundle:update. It’s running as I type this, so I’ll follow up again once I’ve gone through all the processes again, if necessary.
The ks620_0_0.xml files posted previously in this thread need edits to work. The one I posted has the new type of, but it’s invalid xml. The other one posted is the old file without the new type id.
It wasn’t clear if you made your own.
Just to pile on. 
You may have already fixed it by now
At the time of the post above we were trying to sort out the formatting. The file I attached was unmodified directly from the current binding to show formatting only.
as noted by @bcarp the type:ID of the unknown device need to be added. They are found in the unknown thing message in HEX. If you have the same as @bcarp add 0811:23A9 to this pair in the file above.
<property name="manufacturerRef">0811:03A8,0811:13A8,0811:23A8</property>
Sorry for the confusion
Well, gents, I finally got it sorted.
I did miss the note that the file Bob provided was unmodified, so I updated it and ran through the process again from scratch. However, this still did not work. So I extracted the modified jar and found that when I created the ~/jarmodify/OH-INF/thing/[vendor]path I used kw620 as the “vendor” instead of kwikset. So, I modified the dir name, ran bundle:update again, and 
success!
Thanks again @apella12 and @bcarp for the assistance with this. It’s great to know the community is so responsive, and it was a good learning experience for an OpenHAB newb.
Cheers 
Glad you got it going! I’m new to OH as well, but it’s been fun to learn and experiment with.