Not sure how turning in place (what the video shows) is considered a u turn. Looking at the apps info screen on turn options, it shows Yarbo making a wide turn, not sitting in one spot. That is indeed a zero turn
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Zero turn spins in place with the tracks moving in opposite directions.
U-Turn one track moves while the other one stops, making a three point turn.
Smart Turn makes a smooth turning motion with multipoint turns.
The app and marketing is not correct but does depict what one would expect it to do. @JayWozz has found through his testing that zero turns are less damaging on the lawn vs U-Turns or Smart Turns over the long term. However, you still have to manage where it is doing the turning otherwise it will create wear no matter what turning method you use.
For me, smart turn is fine and I haven’t tried any of the others. It forces a zero turn automatically in tight areas just like where my zero turn mower would pivot. So, the wear in those areas isn’t noticeable because it was already damaged there. But, in my zig zag areas, where I used to turn around with the zero turn mower I am noticing no damage from Yarbo. Also not noticing thatch and dead grass laying on the lawn as I am mowing more frequently now with Yarbo than I wanted to when manually mowing.
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Thank you for the clarification on u-turn. Yea, their info screen shows a wide turn, both track moving. I can see how one track turning while the other is fixed is slightly different than zero turn.
@Yarbo-Forum does Yarbo have any recommendation for which option to use for least wear on grass? I always assumed it was smart turn, as there is dragging of the tracks (where zero and u-turn drag the tracks across the grass to varying degree).
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I tried shutting down Yarbo. Disconnect the cable from the mower, and restarted Yarbo. after startup it showed no attachment. I shutdown Yarbo and re-attached the cable to the mower and restarted Yarbo. After restart the cutting blade overcurrent had resolved (likely temporarily.)
Might be worth a try. Could be the difference between mowing and not mowing.
YMMV
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Caution… Yarbo may get creative with mowing…
Zero turns are tearing my lawn down to bare dirt on the very first work plan using the latest firmware.
The work plan I am testing is set to smart turns. Smart turns using all previous firmware versions did not produce measurable damage to my lawn.
Previously lawn damage occurred during journeys on pathways and the perimeter mowing (which both do not use smart turns).
My results do not align with any anecdotes that zero turn causes the least lawn damage.
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I shut down Yarbo. Disconnected the battery. I also pulled power on the Data Center. I waited 5 minutes and applied power to the Data Center. I waited 5 more minutes and reconnected Yarbo’s battery and powered up Yarbo. At “Ready to work” all seemed well. Sent Yarbo back out to mow. So far so good. (at least for now)
I am sure it is very dependent on if the grass is wet, the type of grass, the underlying soil, etc.
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Talking to yourself now? Pretty soon you’ll be writing dissertations like @Ken
Still seems wrong that if you’ve selected Smart Turn and it uses Zero turn.
That isn’t my experience though. Smart turn are still working for me on the latest software. (at least for now)
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There are a lot of “work arounds” to keep the rover within bounds when navigating near boundaries and NGZ’s. It has always done zero turns in tight and pinched spots or when it pins itself in doing collision avoidance. I have watched mine spin in a circle 360 degrees in some of those instances. Not optimal. Hopefully they can get the algorithms refined more and support more gradual turning instead of all the stopping, pivoting, backing, etc.
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I do have the name for it. 
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Great… now I have the “Yarbo is adjusting the blade” forever message.
Or maybe Yarbo is just watching the sunset.
Paused the work plan. Exercised the cut height from its 2.7 up to 4 then down to 1.2 and back to 2.7 with the app.
Resumed and Yarbo went back to work.
Ticket #100898
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It was more of a mix of u- and smart turn. Not exactly 3 turns but 2. And the tracks were moving, now the inward track is standing stop, and it scrapes up the lawn. A real zero turn would move the inner track backwards.
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I have witnessed this behavior as well. Some places there are no other options while other situations there is a lack of carry over of the prefered turn.
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So if I am still on 3.8, put in a ticket?
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I think @Yarbo-Forum can advise. @bryan.wheeler @Steve @Ken any insights?
Which part, @ken.w.gregory? There are at least 20 topics in this one. 
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@ALlawn was wondering if he should put in a ticket if he has not received the update firmware yet.
I haven’t seen an official statement from Yarbo as to if they have completed the deployment of the firmware or not.
I was hoping someone more in the know would… well… know…
They said in the original announcement that if you haven’t received 3.9.16 by Saturday July 5th to submit a ticket.
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