yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] duckfart:
Just an FYI,

If anyone accidently unplugs, loses power during update, you can do the following to redo, your not bricked.

What to do if you accidently unplug your USB cable or other mishap updating your software.

First off, your screen will have a triangle with an exclamation mark with an error message.

1.	Exit Odin

2.	Unplug USB cable from phone

3.	Hold volume down and power (bixby) button until it turns off, keep holding it until you see the Samsung Note 20 logo come up, then release buttons.

4.	The phone will not go into the recovery menu; if it doesn’t, repeat steps 3 and 4.

5.	In the recovery menu, scroll down (vol dn) until you select power off.

6.	Once the phone powers off, hold the vol up, vol dn and power button until you see the teal back ground and warning; press volume up to get into the download mode

7.	Start Odin and hook up USB cable.

Make sure you are using a good USB cable and not he one supplied w/ the phone as that one is for power only and does not have the data transfer capability.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] ad44891:
What's good peeps.. So which Odin is the best to use thanks and great to see you guys over here.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] gold3ndrag0n:
It's years since I've been back to the scene, I'm talking about the days of the Note 4 locked bootloader and the bounty placed on the unlock so I'm a bit lost here. So from what you're saying, I've got an AT&T locked Ultra that I plan on using with T-Mobile after I can source an unlock code, came with N986USQU1ATGP can be fully flashed to T-Mobile's N986USQU1ATH4 firmware and henceforth will act like a T-Mobile variant, receiving any future T-Mobile OTA updates?

If the above statement is true, then are the steps to flashing T-Mobile's firmware onto my AT&T phone any different than the steps already outlined in this thread for flashing the U1 variant to a carrier specific variant?

Thanks.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] unitz0mbie:
Yes and steps are the same, just att has specific steps for wifi calling.

I'd recommend you flash unlocked firmware, your sim should automatically detect your carrier and provision your services
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
3.14.4
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] JON@BUILDAWORKS:
just so all you guys know. it might be fixed now but the link on page 2 for ATT was not working. it had the unlocked version in there. used the one further out on another page and it worked. i have an unlocked model on att now. wifi calling working
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] NoteGarner2020:
If I flash "N986U1UEU1ATH3" on Note 20 Ultra - U1. Will I get ATT wifi calling? Or I have to flash U CSC as well?

---------- Post added at 07:38 PM ---------- Previous post was at 07:27 PM ----------

Can you please post the link here? I am getting my mobile today. And want to flash before I start my phone transfer.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] gold3ndrag0n:
So you're saying instead of flashing T-Mobile's N986USQU1ATH4 firmware over my AT&T N986USQU1ATGP firmware, I should just flash the U1 firmware from Frija with my T-Mobile SIM in the phone and let it provision itself to the T-Mobile variant?

Thanks.

Edit: Will that still enable OTA updates from T-Mobile down the line? Also, why do you recommend doing it this way vs just flashing T-Mobile's firmware straight over AT&T firmware?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] NoteGarner2020:
Got my phone and followed below steps and I have Wifi Calling, Voicemail etc from ATT without bloatware Apps. And phone also show Warranty Void as 0.

1) Setup Phone with ATT sim card in, setup with carrier settings

2) Flashed U1 N986U1UEU1ATH3 full firmware

3) Restarted after flash and no changes on the mobile

4) Flashed CSC from U ATH3 (Once phone rebooted it took me to bootloader screen, I heartbeat increased but after restart everything was working :D :D )

5) I saw ATT logo and then I knew I have those WiFi calling etc. Once restarted it asked few popup for ATT. Once it flashed 5Ge logo and gone.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Geekser:
FYI - a while back I had a problem with a flash that didn't work and I got the error screen you mentioned. All I did was unplug and replug the phone in the USB/PC, close and then re-open odin and load the files I wanted to flash and then just click start.

I didn't know that would work but got some tips when I wrote about my flash problem here on XDA and was essentially told that your phone is still technically in download mode when you get that error screen - no need to turn off the phone or anything. Just close and then open/load odin with the file, unplug and then click start.

This was on the S20 Ultra so I can only assume that it will work as well on the new Note. YMMV -
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Yup correct on that.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Sorry all, was out of town last couple days. oh, and thanks to everyone for getting questions answered!

So a few answer to comments from the last couple pages.....

The Link to ATT UNLOCKED is working correctly. This will get you OTA for the Unlocked version

AT&T current stock is ATH3 (Non the unlocked version) if you flash any other firmware aside from it or the firmware that it launched with, you will NOT get OTA.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Correct on AT&T current stock is ATH3, Even thought i'm on ATH4 , which i don't care for live OTA lol , Since i do my own OTA before carriers drop them public :D
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] NoteGarner2020:
My Visual Voicemail is not working any pointers? WiFi calling working. Is it ROM releated or something with ATT?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
How isn't it working more information needed, like first are you on AT&T Carrier or on unlocked and did it work before on the Note20 Ultra or the phone you had before the Note20 Ultra 5G.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] NoteGarner2020:
No worries I think something wrong with my account. I never tried it before to activate. Will check the ATT customer rep.

If I flash full ATH3 / ATH4 for ATT will I have OTA updates? I have seen sometimes Samsung Member / some services don't connect. Not sure if it's because of U1 flash and CSC from U firmware.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] killer5000:
Just got ota on sm-n986u on AT&T will do a screen short when it done updating. And it was 530mb.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
If you Flash ATH3 you would officially get OTA, but not with ATH4 even thought there both August patch which they basically are the same but AT&T decided to go with ATH3, Anyway the reason i asked about Visual Voicemail is cause if you had your older phone and had Visual Voicemail on it and still hasn't been deactivated from your older phone then your Note20 Ultra will fail in activating the Visual Voicemail, i had to deactivated it from my Note10 Plus, then my Note20 Ultra decided to activate my Visual Voicemail. Which i found it odd.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] cam30era:
Is this true for all US carriers, or just ATT? Which of the 3 character groups in the CSC string determines network priority? (my U1 unlocked device is CCT/CCT/XAA).
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] rjohnstone:
Not that simple.

The CSC config on U1 devices for carriers is different than the CSC config on a U (Carrier) device.

U1 (XAA) devices do not get carrier bloat, and integrated software.

If you want full carrier feature set, you need to flash U firmware.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] cam30era:
I understand that. Is call clarity and connection any different/better with U vs U1?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] rjohnstone:
I personally haven't heard any difference.

One caveat though is that I have a U (AT&T) device that I changed the CSC to XAA and flashed U1 firmware on.

I wanted the "Call and text on other devices" feature that is disabled on AT&T "U" devices.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] cam30era:
Thank you
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] c-prodigo:
I have been trying to odin my att note to the t-mobile firmware, but all I have gotten so far is that it stays on unlocked firmware, I am using the one from this forum, any help is appreciated
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Are you flashing the BL/AP/CP/CSC and USERDATA? files
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] c-prodigo:
I am flashing everything that's included in the zip file, I haven't seen user data inside it, should I find that separately, is it posted somewhere else? and thanks
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I couldn't remember if the USERDATA file was there. JUST to be 100%, you're flashing the file from Post #2?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Nettwerk:
Leave blank USERDATA.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] c-prodigo:
ok I was flashing the wrong one I was able to odin the t-mobile version and it's running fine
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Outstanding
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] jpinoy:
Just got March 1st Security patch for update: DUC1 update for N986U1:

N986U1UES2DUC1/N986U1OYM2DUC1/N986U1UES2DUC1

Can also be downloaded via Frija(6GB) but phone update was about 241MB.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I'll have a link posted in post #3 shortly. Thanks for the heads up
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Link to U1 DUC1 posted in post #3
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Be aware bootloader updated to version 2
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Good catch
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Yeah some might not notice it so i give heads-up just incase if anyone uses Odin to update you won't be able to odin to any of the U and U1 firmware older Version.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Also keep in mind yall. If you flash to BL2 you will not be able to flash ANY BL1 firmware INCLUDING the Carrier firmware's on BL1
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
I beat you lol 😆😂🤣
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
Omg im so tired of Xda not working. Now I understand why people are migrating to Telegram
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] rskyline:
I'm pretty much new in the Samsung carrier and unlocked versions area, and I'm kinda confused so I hope I can get some help and clarification about this.

I have now a Samsung Galaxy Note20 Ultra At&t version and I'm thinking on maybe switching to the US unlocked version to maybe get faster updates and possibility to get into future beta programs. Questions:

-Can I switch from carrier to unlocked by flashing? From N986U to N986U1?

-Can this be reverted?

-Does this void warranty?

-Any other disadvantage by doing that switch?

Thanks for the responses.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
Um don't believe there will be a beta for Note 20. Don't know if you will get updates faster as Samsung has already given 2 and we only get 3 I think. You will have less bloat but for me there was no upside to unlock. But for you it may be different. I'm sure others will chime in.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] rskyline:
I believe there was a beta for Android 11 just for unlocked version but we might not get the beta for 12. But updates are faster for sure. Not that faster because I'm already on One UI 3.1 but on February patch, and US unlocked already received the March patch. Is like 15 days difference but still I believe should be worth it to switch if I get less bloatware and better functionality (like the built in spam protection for calls that I don't get with at&t software, or the ability to see the changelog for the last software update on settings).
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
-Yes you can switch from U to U1

-Yes you can go back and forth

-No warranty voiding

-Disadvantages? I think you may see a little bit of signal loss at the device (this can vary depending on your location). You'll lose the AT&T features, and I would highly recommend wiping when moving from one to the other

Honestly as far as the Unlocked getting the updates faster, they arent exactly on the same exact rotation, but they arent too far off with the updates (IMO, you arent missing anything)

About the AT&T bloat, again IMO, MOST of it can be uninstalled, and for the stuff that cant, can be disabled.

I havent found any use/need to go to the U1 in a LONG time. But thats just me. Others have their reasons, but I dont see the need
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] rskyline:
Thanks for the detailed explanation, I think just for fun I can go a test it, and if I don't like it I could go back at any time without repercussions, it's more about the curiosity and also because I'm bored and just to remember the good old days lol.

Do you have the att version too? I'm having an issue with call protect app.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
If you're talking the U1 firmware (Post #3), they are all running the same revision. U version (post #2), yes we do have the current one (AT&T can be tough to get sometimes)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] rskyline:
I see, I was asking more personally if you had the ATT Note 20 Ultra just to try to troubleshoot mine with the issue I'm having with an ATT app. Thanks again for your help man.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
So one sec before you pull that trigger.

If you flash the most recent U1, you can NOT go back to current AT&T stock. The latest U1 is on Bootloader 2, EVERYTHING else is still on BL1, there is no going back until the carriers move to BL2
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Ah, yes I do have the AT&T version. You're welcome, any time
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] rskyline:
Great to know thanks for that important info. There's no downgrade possible for me then. I rather wait.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mjohnson4580:
I have an unlocked Note 20 Ultra on AT&T and have yet to receive the updates this month. If i dirty flash the latest update it will bring me up to one ui 3.1?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Yeppers, it sure will. DUB5 to be your guy
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] mjohnson4580:
Whats the difference between the home_csc and reguler csc?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I can't say EXACTLY what the difference is, but the CSC is one of the files that will wipe your device, the HOME_CSC wont. (USERDATA will wipe too)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] lowkey74:
An update awaits on AT&T variant. Getting ready to download now.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Are you on Unlocked or Carrier firmware?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] lowkey74:
Carrier. My bad!
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
No worries, I JUST checked myself and I'm downloading now too (Also Carrier version)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
DUBB, March Security patch 254mb. It's also bootloader 2, so if you update to it there is no going back to any of the previous firmware (Incl the U1 bl1 firmware)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Yup correct got up around 1am and there it was waiting. Had to first do the time change trick and set it up for 1pm to get the update if not would probably have to wait till tomorrow lol 😆
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] chrisfsk:
Hi, can I use the same method to flash the US unlocked n986U to other region's firmware like Hong Kong/China
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I can only assume so, I don't have a Non-US device. You might want to check to other threads for the flashing steps.

If you're asking if you can flash N986U1 or U1 firmware to a Hong Kong/China device, that would be a, No you can't
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] chrisfsk:
I mean from tmobile N986U -> N986U1 -> HKG/China N986
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
So then my 2nd comment applies.

You can't flash a US based firmware (U or U1) to Hong Kong/China device. That would be the N9860 threads

Edit.... I honestly don't know if you can or not. I'm pretty sure the N9860 runs SD, but your best bet would try the other threads that are focused on that specific model
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
No Note21 this year Confirmed by Samsung

https://www.facebook.com/310644942376221/posts/3749555715151776
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I had heard there was some question around the Note's future, at least they are confirming that there will be one in 22
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
I'm good tho Will stay with my Note20 Ultra 5G 512GB and my Note10 Plus as well, Samsung is doing Notes lines but not this year they got some Super Note line coming next year tho.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] adj998:
I got updated to DUC1 but I'm not on the unlocked version, Im with Spectrum
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I'm thinking I'm staying with this device too.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Lord_Saren:
Does the new DUB8 Firmware block installation of Custom Recovery like the last update?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Are you talking about that paid way of doing it?

Since it's moved to bootloader 2 I would imagine it does
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Lord_Saren:
I know the DUB5 Firmware blocked it. But you could just flash everything except BL and it would work. I will hold off until someone else tries it.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
No update for me..lol. I'm still on Android 10
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
You're goin' "Old Skool"? ;)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Oh, and a "by the way" comment

For those that use it, Samsung DeX works wirelessly now
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] thathugesamoan:
Thank you for the information. However, I am still a bit confused. So, I have a Verizon Note20 Ultra (SM-N986U). It currently has the "Call or Text from other devices" feature locked. I would like to get the full unlocked firmware to obtain said feature (along with anything else locked by Verizon), but still be able to use Verizon as a carrier. Is this possible? If so, which firmware do I download (This has been the main source of confusion on my campaign to figure out which firmware to use). I currently have the most up to date software and firmware (provided by Verizon). I am very new to the "flashing" game, and I am trying to learn more without bricking my phone or rendering it useless with Verizon. Thanks to all this information, I now know in the future to just get an unlocked device directly from Samsung. Thank you for you time, any and all help is appreciated.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
So 1st off, welcome to the party ;) and you're VERY VERY unlikely going to end up with a device thats useless on VZW. The flashing has gotten WAY easier since the old days.

I COULD be wrong (Someone with a bigger brain please correct me if I'm off base here), but I think the feature locked on the VZW end so until they change that it'll remain that way (Again, y'all keep me honest)

So you're in a SLIGHTLY more complicated time with the firmware roll outs. The latest VZW Carrier firmware I have here is 1DUB7 and the newest Unlocked firmware is 2DUC1. The problem being, is the Unlocked FW is bootloader 2 and the DUB7 is bootloader 1 meaning if you flash DUC1, you're staying on that until we can get the latest bootloader 2 firmwares for the carrier versions.

Not confusing at all is it? ;)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Found Carrier version for CCT - 2DUC1 uploading now and will have a link shortly
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] butchieboy:
You know me my friend..lol. The S20FE I just bought shipped with 10..so I kept it there so I can try GSi roms. Finding they are all pretty much the same.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] pimpmaneaton:
I am running the unlocked firmware on a Verizon phone on the Verizon network. Call and text on other devices is not disabled in the unlocked firmware. Only thing you will loose is the carrier video calling, but Duo was my go to for video calling anyway. Wifi calling works as well in unlocked.

If you are worried and want to be able to retain the ability to go back to Verizon firmware for any reason, flash the firmware just before 2DUC1. If not flash all of the files for 2DUC1. I always flash the CSC files when going from locked to unlocked, and doing so will wipe the device, so just remember to back your stuff up either to computer to sdcard.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] PapaDocta:
I want to use my AT&T N986U outside the US and want to flash it to U1. When flashing do I have to insert an AT&T sim card? I don't want it to be on any US carrier.. Wil that work?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Yeah that should work just fine.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Thanks much for the info. Good to know
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Lord_Saren:
Does anyone have a link for DUBB firmware?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I haven't seen any links for AT&T yet. They can be tough to get.

And some of the other carriers haven't released their March patches yet
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Finally got CCT uploaded, link is in post 2.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
2DUBB link is in the OP
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
I also have a link there as well forgot to post it yesterday but it's there.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] Venom0642:
Here's a mirror just incase

SM-N986USQS2DUBB_USC_ATT.zip | by Venom0642 for Galaxy Note 20 Ultra

March Security patch 2021

www.androidfilehost.com
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] sclarktay4:
N986USQS2DUC1 for CCT - does that mean I can not flash since I am on TMO/SPR?
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
Please take a look at the OP, it'll answer that for you :)
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] sclarktay4:
embarrassing! Not at the top easily available to everyone. Sorry for not reading. The best place to hide things from me is right in front of my face.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] supurman182:
Hi all! I'm having an issue here. I have an unlocked tmo note 20 ultra and recently put in a att sim. It has been buggy with me not receiving calls sometimes. Currently I am able to text out but I do not get any incoming messages.

Also I noticed that all the tmo stuff is still on the phone and when I power on I get the t mobile screen. Before I was able to enter *#*#27262826#*#* on the Google dialer to change the csc on the phone to att but that is no longer working.

Any recommendations are welcome. I was thinking to flash to U1 or to flash to an older firmware to see if that google dialer code will work.
[Samsung Galaxy Note 20 Ultra Guides, News, & Discu] kangi26:
I would consider flashing 2DUBB from post 2, and allow it to wipe