yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] VICosPhi:
Can I flash this on Unlocked Note 20 ultra(U1 model) purchased directly from Samsung to convert it into the carrier model (T-mobile USA) even though the firmware name has _USC (US Cellular?) in its name? It doesn't look like the bootloader has been updated yet since release so should be good with that part.

Thanks...
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
You should be able to without any problems. I can't really say 100% because the device is so new most people don't even have it yet :)

If you decide to try it let us know if/how it works for you
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
It's possible that it could be N986USQU1ATH4 but my bet is most will ship with ATGM (July security) and immediately update to ATH* (Aug update).

I'm pulling a ATH3 CCT copy now and will get a link uploaded a bit later today
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
Mine came with U1ATGP
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
Gonna try package disabler
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Which carrier are you on?

I haven't used any of those since Titanium on my............... crap, I cant remember.

It's been a LONG time :eek:
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Oh and mine is scheduled to be delivered tomorrow
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
I am on At&t. Yeah I was very surprised when I got notification that it shipped. Got it today around Noon. And it is absolutely beautiful. Just installed Whitestone.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
And once again At&t probably will not post any of their firmware. I know the firmware is probably the same as was with N9 and N10, but some like it to be the carrier they have.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] keredini:
Got my preorder yesterday afternoon! Mine is on ATGP and no update yet for ATH* (Aug update).

[MENTION=4496829]butchieboy[/MENTION] I'm relying on you and the others to get the OTAs posted so i can start flashing again!
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Don_Pachuco:
What does the CCT that's separate mean?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kwd114:
So has anyone been able to flash an Unlocked U1 to the T-Mobile specific rom. I downloaded the rom from Frija and flashed it while in download mode but the rom still appears as the XAA rom. In the about software section it still lists XAA across all 3. There is no specific Tmobile feature installed.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
CCT is Xfinity
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Here you go.

https://drive.google.com/file/d/1-miZOTFFmj6ZrNEbeuMLqtJ5z9AZtv5F/view?usp=drivesdk

https://drive.google.com/file/d/1-kWe5o4MkZGjsM6_UVdDMx_ejRmtgLo_/view?usp=drivesdk

---------- Post added at 08:06 PM ---------- Previous post was at 08:03 PM ----------

Let me know if you can view them

---------- Post added at 08:07 PM ---------- Previous post was at 08:06 PM ----------

Check out the Google photos link

https://photos.app.goo.gl/GwxzvzJEdXjdrURV7
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
OK saw this all well you are on ATT if i am not wrong.. Right?

Just confirm that and do the following:

1. What's your CSC?

2. Do you mind your phone getting to factory reset?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Yes ATT. No don't mind reset. How do I find my CSC

---------- Post added at 08:32 PM ---------- Previous post was at 08:26 PM ----------

CSC right here.

https://photos.app.goo.gl/Px2QHkCqrS5mZSWu6
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
That seems like original ATT firmware right there. You should be able to get the OTA as and when that is released and it seems your phone is locked to ATT.

What you can do is flash this one : https://www.androidfilehost.com/?fid=8889791610682942357

1. Download the file from above and extract all the files in a folder (Lets name it Sept Update)

2, Then use this Odin ( This is safer to use).

3. Once you have downloaded the Odin, open Odin.

Note that when you select the files the log on the left of Odin will show whats going on and once Odin is done loading the file it will say Leave CS (SEE ATTACHED SCREENSHOT)

4. Now click on BL button -->> Go to the folder we just named "Sept Update" select the file with name starting with BL, do the same for AP, Click AP and select file name starting with AP (NOTE THAT AP TAKES TIME TO FINISH). Do the same for CP.

5. Now for CSC choose filename that starts with HOME_CSC.

6. Now Power off your phone. and Plug the USB cable in your laptop (I used USB A to UCB C). Note 20 Ultra came with USB C to USB C cable, my laptop has no USB C ports.

7. After plugging in the USB into your laptop,hold the volume up and down button on your phone at the same time, while keeping them pressed plug in the USB into the phone. The phone will start in the Download mode, press volume up now to accept.

8. You will see on the Odin it will say Added.

9. Press start and let it finish.

10. Let us know how it goes.. THIS IS VERY IMPORTANT, WE ARE ALREADY INVESTED IN THIS PROCESS SO WE WANT TO KNOW. LOL :D
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] testrak:
Should take 5 minutes to complete flashing.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Never Mind you edited your comment.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
So just add AP,CP, BL and CSC?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Yes, dont worry about userdata and make sure for CSC you use file name starting with HOME_CSC_
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Crossing my fingers
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Cheers :)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Should I leave the ATT sim in?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
It doesn't matter you can leave it in.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Still no specific ATT stuff. Software still reads XAA/XAA/ATT
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Yeah that is going to be tough to obtain, sorry wasnt sure if you were trying to get latest update or were trying to change to ATT/ATT/ATT. That is going to be tough deal we have to wait for official ATT update out and then we can try to flash.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
So I wont be able to get OTAs now correct? Can I flash back to ath3 just in case I do a warranty claim?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Correct, you will not get OTA with the XAA present. Yes you can flash back to ATH3 (Flashing the BL/AP/CP/CSC/USERDATA and SIM installed) if you decide you want to do a claim.

Even as it sits right now, the device is really only "missing" the ATT features right? Otherwise it's operating correctly

Edit.....

Although, you COULD flash the complete N986U1 firmware and get OTA from it (I believe)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
He has N986U device so are you sure about that?

Also your warranty isnt void and yes you can go back to ATH3.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Yes it functions correctly but no carrier features. What are the odds of getting a att stock firmware for the 986U device?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Just so you know your warranty isnt void so you dont really need to flash ATH3, just dont explicitly mention Odin flash when you claim for warranty also just so you know 90% of tech support is super dumb and goes by SOP documents, most wouldnt be able to figure out that you flashed even if they used diagnostic tools, as you didnt knock off knox, no rooting, no bootloader unlock so you ar golden for now. Now you are on Sept Security patch so just stay on this.

Carrier features are really hard to get unless you bought from them, i myself dont have Tmob features like video calling etc. Waiting till i can find a solution also i am not willing to do a reset.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
At&t does not post their firmware on Frija or Sammobile. Usually if its on Sammobile I have seen only the version of when a device was released. There is no At&t U firmware on Sammobile. As we have been stating previously, all the U firmware is the same. It will provision to the sim you have. If you flash U1 firmware you will not have wifi calling. If you want wifi calling while on U1 firmware flash any U firmware csc in Odin. The product code and csc code need to match in order to get OTA (I believe). You can flash ATH3..ATH4..as long as the bootloader is the same..and it is for all the current firmware. So you can flash anything that says S1 or U1
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
I believe following these steps here screwed things up. The code doesn't work anymore to switch back to att.

https://xdaforums.com/galaxy-note-20-ultra/how-to/update-1ati5-available-t4165955/page6
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
I never use the secret codes.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Yep wish I would of talk to you first.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Use the same instructions that you were given earlier but flash the U1 firmware if you haven't already. If it flashes without error, the SIM should get you back on ATT. Then you should be able to flash the U ATT version found in this thread get get back ATT features.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] testrak:
Most likely you messed up the phone using CSC code change. If you flash to U1 ATH3 and still see XAA/XAA/ATT, you should start warranty claim with Samsung service and specify carrier features are gone and it needs flashing to get ATT/ATT/ATT. That is what Geekser did to get the phone with functional carrier features.

Lesson learned do NOT use CSC code change on carrier locked devices.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Hey since you seem to have some knowledge about this Csc code thing mine is in format of TMB/TMB/XAA.. I bought this phone unlocked and I am using Tmobile. Do you think I should try using code to change Csc to XAA also is my Csc format OK and does anyone know if I will get OTAs?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Do you guys think a prepaid att sim card will fix this? Or no? I read somewhere that a user had similar issues. If someone can find that comment please post link.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Yeah i read that and thought of you while reading that, i will find the link for you. But try to follow the steps exactly like that user.

Here: Find below the post you were talking about but i am still skeptical as this person also used another sim (Other than ATT) to get back to some other CSC.

https://xdaforums.com/showpost.php?p=83552501&postcount=82
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
IMO, based on the problems that borijess is having, I might recommend avoiding messing with the CSC codes. It could be creating some issues, just my personal opinion.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
So what CSC should I flash for my Note ATT? He flashed the Sprint one. I am currently on ATI6 firmware
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
But...if you read this part.

"The root cause of the issue is the CSC included with U1 firmware does NOT include FirstNet's MCC/MNC in the list of AT&T networks (check ATT/omc.info in a U1 optics.img). The U firmware does.

The issue is of course once you switch to the U firmware, you lose the ability to switch CSCs by inserting a new SIM.

"

That's where the problem is. The U1 firmware WILL change the CSC code with a SIM swap. That is why I suggested flashing the U1 firmware to let SIM change the CSC to ATT/ATT/ATT then flash back to the stock U carrier firmware.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
I tend to agree with you here unless Borijess is able to fix and find the cure ( Hope one for Covid is found soon too)

Try reading this post from here and see if you can do the same for ATT- https://xdaforums.com/tmobile-galaxy-note-8/how-to/guide-enable-video-calling-hd-voice-t3786810

Only challenge is i dont know how to find ATT firmwares they dont show up on Frija

Basically what you said seems right, Borijess try mlr's suggestion.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Ok so I am on the U1 firmware ATI6 I believe. So all I have to do is put a prepaid sim to see if it works? What CSC do I need to flash my ATT 986U with? I know there is no stock firmware but will I get all my carrier features back and the ability for OTAs? By the way I ordered this prepaid sim. Will it work?

https://www.amazon.com/gp/product/B06X9FYDPV/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
I don't see a ATI6 firmware listed on Frija. Are you sure you're on U1? Latest I see is ATI5.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
I flashed this file posted here.

You are right so I flash the ATI5 from U1 section. Doesn't matter if it says USC/SPR?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Can you confirm you baseband version in settings\about phone\software information?

You shouldn't need another SIM card. The one you have should be sufficient to get you back to ATT.

Any U1 will work.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Here

https://photos.app.goo.gl/mr6w7yKwrqUH24bZ6
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
You will get ATI6 if you look for U firmware and in CSC put USC.

Just paste your link from yesterday on google drive this still doesnt show up
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
But he needs the U1 firmware to flash. He stated he was on ATI6 and there is no ATI6 firmware for U1. Just wanted to verify he was on U1 firmware.

---------- Post added at 01:24 PM ---------- Previous post was at 01:22 PM ----------

So you are still on the carrier U firmware according to the pic. You need to be on U1. It should read N986U1UEU1ATI5.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
I think there is some confusion, his phone is ATT locked so ideally to get back all the services he needs to be back on the U firmware with ATT CSC, unless i read something wrong in this whole thread. Borijess please clarify.

MLR - If you are saying to get back to U firmware with ATT CSC he needs to flash U1 firmware then that is a different thing and i will stay out of this to avoid confusion.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
So I need to flash this one?

https://photos.app.goo.gl/rTdMEF554VkkVTSJ8
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Yes. That is correct.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Also this time Use the regular CSC file and not the Home_Csc one ... this will also wipe your data and factory reset the device.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
Do I need to flash a different CSC like in your instructions?

---------- Post added at 06:32 PM ---------- Previous post was at 06:29 PM ----------

The CSC from ATI5?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
He is stuck at XAA\XAA\ATT after the 272 CSC change. When you use *#272 for CSC and change it to XAA on the carrier U version there is no way to use it again for some reason. Flashing a U1 firmware should get the phone to where the SIM will change the CSC back to ATT\ATT\ATT. Then he can flash The ATI6 U firmware to get his ATT features back.

---------- Post added at 01:36 PM ---------- Previous post was at 01:34 PM ----------

Flash the CSC included in the U1 firmware. Either should work but the non-home CSC will wipe data and give you a fresh start.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
CSC from whatever you are flashing the U1 Firmware you took a screenshot of use its CSC that comes in the package
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
I hope this works. Will let u guys know in an hour.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Got it thanks for clarification and i think let him flash the regular CSC from U1 firmware better to do a clean flash and take it from there..
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
We're keeping our fingers crossed! LOL

---------- Post added at 01:40 PM ---------- Previous post was at 01:39 PM ----------

Good idea.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
I am getting this error when trying to flash. Its either stuck on setting up connection or fail.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Try Odin 3.13 in the links. I don't think 3.14 is patched. There's also a 3.14.1 patched version in one of the other threads for the S20 that I think can be used.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Bro the Odin i told you to use in that lengthy tutorial was a patched one use that
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
ok flashed it and once I put att sim in it asked me to reboot phone. What should I do now? Flash back to ATH3 986U version? Should I try the CSC code? Just checked the service provider SW ver is now ATT/ATT/ATT
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Check your version and see if it says ATT now. If it does you can flash ATI6 if you want.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
It does say ATT now. If I flash ATI6 how would I get the OTA updates? So when I flash ATI6 can I now leave sim in? Should I flash ATI6 or ATH3? I know ATT branded devices have not received ATI6 yet. That is what got me in trouble. LOL
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Yes. Any of the U firmware should get you updates. As long as you don't go mixing U and U1 CSC files.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Now that it says ATT in CSC all you need to do is flash the ATI6 firmware for U version and in CSC use the Home_CSC from the same ATI6 Package
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Exactly. You should be good now.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
Cheers man to you and everyone else who actively participated in solving this issue in the process we all helped ourselves too.
[MENTION=2793689]borijess[/MENTION] you should post in the Guide section what happened and how you couldnt go back to Original CSC and then steps you took to rectify. Trust me it might help many.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
I just want to thank everyone that tried to help get my phone back to ATT! Special thank you to mlr_90 for saving my phone and time sending for a replacement! Thank you all XDA members are great to work with.:D
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Awesome! I'm super glad you got it straightened out!

As a side note, we don't quite know yet what the AT&T Sept 1 Security Update is going to be yet. If the revision happens to be ATI6 then you WILL get OTA. If by chance it happens to be something other than that you would need to Odin to that version when we can get it uploaded to post 2 in order to get OTA in the future
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
Glad your back up and running
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mlr_90:
Glad to help. Be patient for updates. Lol. I'm one to talk.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] dottat:
So what have we learned? A carried locked phone will still do the sim customize reboot on the full unlocked firmware allowing you to flash back to regular U software with no issues.

Could deduce at that point that if you were to get a perm unlock via your carrier that the unlocked firmware would enable this phone to behave exactly like an unlocked phone?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] borijess:
If that happens can't I go back to ath3 and update from there?

---------- Post added at 11:40 PM ---------- Previous post was at 11:09 PM ----------

Will do!
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
You sure can, or even just Odin to the new one right from where you are now
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] warriorvibhu:
I don't think note 20 users are allowed to do that. There is no Android 11 beta sign up for Note 20 users (if there is, I am not aware)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] ferzmedina:
Just got the Verizon U update. 1BTIB is their version of the September patch.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] pimpmaneaton:
I flashed the full ATI5 firmware on my Verizon device and only thing that I lost was the video call setting in dialer, Verizon video calling. But I just use Duo anyway so that was not an issue. Still have wifi calling and volte and everything is working fine. I flashed everything but the userdata and used the ATI5 CSC, not the Home CSC and did a factory reset. Once it first booted said it needed to reboot to apply carrier features.

View attachment 5104485
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Seems like Verizon just pushed out OTA September Patch 1BTIB

Running On SM-N986U Galaxy Note20 Ultra 5G 512GB
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Wait..... Btib? Not "A"? is that Android 11?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Not sure ask the guy above he's the one that mentioned it.

Running On SM-N986U Galaxy Note20 Ultra 5G 512GB
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Can you take a look and see if that's Android 11? It looks like the build has change Android versions (Btib)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] ferzmedina:
It's still Android 10 and One UI version 2.5
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] gramsey1911:
I just checked and no new patch for me on Verizon

---------- Post added at 02:25 AM ---------- Previous post was at 02:21 AM ----------

Hey can you post a screenshot of your build? I can't find any mention of 1BTIB anywhere.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] ferzmedina:
Screenshot of build.View attachment 5104521
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] dottat:
That would be a little larger than a patch lol. I doubt they would randomly just do that
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] ferzmedina:
Seems I cant post a picture directly on Tapatalk...
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] dottat:
Just use the xda app. Tapatalk turned their back on us years ago. Xda app got a lot better
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] ferzmedina:
Screenshot of new Verizon build 1BTIB:

drive.google.com/file/d/14Tlyn6mAWhJXTWWG-EOppsiBhzL3snDd/view?usp=drivesdk

Edit: added description above link
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
It didn't make sense to me, they went to a different build.

Stop messing with me VZW!
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] dottat:
Don't worry. They do everything right ?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] gramsey1911:
Ok I just noticed a difference...mine is the vzw note 20 ultra on i6 and the other is IB . Notice the difference I pointed to. Wonder if that makes a difference. When I was on H3 I had VZW/VZW/VZW and still have it on i6. Go figure?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] ferzmedina:
I don't think ATI6 is a Verizon build. Maybe that's why you're not getting the OTA. My phone is a U1 and I flashed the official Verizon U 1AHT3 when I got my phone a few weeks ago and just got this OTA.

Edit: I meant Verizon U 1ATH3 above