yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
1. Android 10 was released more than 2 months ago, for both U and U1

2. Flashing U firmware will never carrier lock or carrier unlock a device. The network/carrier/SIM lock goes much deeper than that

3. If you want unbranded firmware, then yes, you're perfectly fine to download and flash the latest U1 version that you can get from SamFirm or Frija
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Do you understand the difference between U and U1? Because it doesn't sound like you do.

Links for each model are in the OP. Click on the link for U firmware, and that's what you'll get. Click on the link for U1 firmware, and that's what you'll get.
[Samsung Galaxy S9  Guides, News, & Discussion] bryanu:
Yea I know the difference but guess wasn't clear how it worked changed from my s7 to now.

On s7 userdata contained the bloat but the actual other FW files still differed in some cases between the carrier as they had specific customization unique to them such as radio tuning etc.

I guess with the newer ones you're saying they no longer do this and the boot logo that used to be part of a separate fw is now loaded from userdata also based on csc otherwise how would one get that changed?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
There were never userdata files for the S7. They weren't introduced until the S8. Bloatware (apps) was part of the system.img (AP file) on the S7, and carrier customizations (look and feel of status bar/network strength, layout of Settings, etc) was part of the CSC.

For the S8 and S9, the firmware is the same among all U models. All carrier customizations are part of the CSC, and those change based on which SIM you insert. Bloatware is your USERDATA file.

U1 is the unlocked model. Zero bloat whatsoever.
[Samsung Galaxy S9  Guides, News, & Discussion] bryanu:
So got mine to take finally.

Sprint logo on bootup/shutdown and all.

Calling Plus working great.

Only down fall is visual voicemail is broken. They added it to app store for unlocked model too finally, but that one when on unlocked FW can never activate, similar to the apk installs people tried on unlocked ones.

On the sprint FW it just never gets notifications and you can't edit settings as they time out communicating though it says that shouldn't impact vm delivery (but it does).

So basically I have no way to know I got VM on either FW. Damn sprint....

But anyway what I had to do was go into recovery, factory reset with cache wipe and booted straight into download mode and flashed the 5 files. After reboot it all flipped over.
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Good to know - thanks for the feedback
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
Yes I'd be interested in AT&T firmware. I didn't realize how much they took away if you don't buy "their" phone
[Samsung Galaxy S9  Guides, News, & Discussion] StolenVW:
Me too would really like the wifi calling with at&t on my s9 u1
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
It's already there and uploaded
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
I'm new to Samsung, I came from years of HTC phones. I didn't really understand the Exynos vs Snapdragon thing, I figured eventually the Snapdragon will get its bootloader cracked. LOL. So I bought the Unlocked S9. I'd like to have all the VZW calling features, but not understanding if it's possible. I read some stuff in a S8 Odin flashing HowTo and it said going from U1 to U or visa versa will brick phones. Please tell me how to get the VZW features on my U1 phone. Phone has yet to have any sim inserted, I have the Odin program, I'm familiar with some adb stuff, I just need to know what is the most up to date methods and risk since there are so many tuts from different Odin versions and different Samsung security setups.
[Samsung Galaxy S9  Guides, News, & Discussion] Xperience Z:
Is there a difference between ROMS on exy or snap chips?

Drivers and so on?

Does it works for both?
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
Snap chips are not unlockable by any official means and no non official has been developed for the s9, I think the S8 has some work around but it gimps the phones performance making it not optimal. Exynos chips are unlockable. Exynos chips to my knowledge don't fully work (no LTE) on the largest US carrier Verizion. Exynos chips are not sold in the US market region by any official channels so import cost are high. I think capabilities are 90% the same but it's the carriers and licensing from ARM Qualcom etc. that create the fragmentation.
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
Links were not finding mirrors
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
Got it to work. Where does the Userdata go in Odin for flashing?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
UMS field
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
Well that's what I thought but that block is grayed out and you can't click on it with Prince Comsy Odin. I did happen to find an engineering Odin which allows that block to be checked and data added. The User data can't be flashed by itself can it?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Go read post #8
[Samsung Galaxy S9  Guides, News, & Discussion] stleusc:
So I have the unlocked version from samsung but I'd like to convert to TMO version. Does that work? On my s8 I remember that getting CSC right required flashing Canadian fw or some engineering fw. Or was that only because I started off with VZW S8 and converted that to TMO.

Sorry if that was already explained. I didn't really find an answer to this.
[Samsung Galaxy S9  Guides, News, & Discussion] bzzybfrm313:
Quick question I have t mobile s9 which one do I use U or U1
[Samsung Galaxy S9  Guides, News, & Discussion] StolenVW:
there is no userdata file for ATT on RGB...

my phone is running on RGB can I downgrade it to rb7 ?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Absolutely
[Samsung Galaxy S9  Guides, News, & Discussion] killahkidd247:
Hi thanks for clearing that up. I've downloaded the latest G960U1 XAA firmware using Frija (filename: SM-G960U1_2_20200316135241_g80e2iwprf_fac.zip.enc4) and have tried flashing my G960U using Odin 3.13.1_3B. It gets stuck on "SetupConnection.." and then ends up failing. I Followed your directions, do you have any reason why this may be happening?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
That's a USB error. Need to try again using a different port, different cable, and/or different PC. Also, if you used "adb reboot download" to get to Download mode, try booting there manually using the buttons instead - I've seen that make a difference in some cases
[Samsung Galaxy S9  Guides, News, & Discussion] mosha.x:
Huge thanks for this!
[Samsung Galaxy S9  Guides, News, & Discussion] harrynguyen510:
Hey guys so I have a s9 and the phone is unlocked. For hours, I've been flashing the firmware, I got the latest 9.0 android but the firmware I got is for verizon. I'm trying to use the verizon carrier, but for some reason I can't get the bloatware and tmobile boot up. How do I switch out tmobile software to verizon? Also, I tried to go from U (VZN) to U1 but it goes to the settings where it shows the firmware and reboot, and stuff like that. So, where do I go from here? Thanks.
[Samsung Galaxy S9  Guides, News, & Discussion] Heathmcdonald:
if you're having trouble boot it without a sim, the sim sets the csc on first boot https://xdaforums.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
1. 9.0 isn't the latest version. 10.0 is.

2. The instructions for converting from one carrier's firmware to another have already been given
[Samsung Galaxy S9  Guides, News, & Discussion] Lost Dog:
Woot has the G960U version on sales or $239. I'd like to use this with T-Mobile but I'm wanting to make sure VoLTE is enabled (need to crossflash to the U1?). With the latest news that non-VoLTE phones may get kicked off the network starting in 2021 I need to ensure this feature is activated.... Anyone know the status of G960U with VoLTE on T-Mobile?

Thanks!

Thanks!
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
If it's originally a T-Mobile model, it should work fine. If it's originally from a different carrier, YMMV
[Samsung Galaxy S9  Guides, News, & Discussion] kdm6389:
Converted from "G960U" to "G960U1" using ROM G960U1UEU3ARJ2_G960U1OYM3ARJ2_XAA, but still unable to get VoLTE or VoWiFi, good thing is that cricket logo on boot screen gone and lot of cricket app are gone too. Going to try T-Mobile ROM
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
You need to flash a CSC that's from U firmware if you want carrier features while on U1 firmware.
[Samsung Galaxy S9  Guides, News, & Discussion] kdm6389:
CSC_OMC_OYM_G960U1OYM3ARJ2_CL13916502_QB20099189_REV01_user_low_ship_MULTI_CERT.tar.md5

HOME_CSC_OMC_OYM_G960U1OYM3ARJ2_CL13916502_QB20099189_REV01_user_low_ship_MULTI_CERT.tar.md5

CSC or HOME_CSC ?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
I said a U CSC, not a U1 CSC
[Samsung Galaxy S9  Guides, News, & Discussion] kdm6389:
I had alcatel 4060A / Android 5.0 and it working with att VoLTE. I am amazed that S9 'U1" ROM doesn't support VoLTE, neither S9 "U" Cricket ROM support VoLTE, Even 3rd world country like India support VoLTE, VoWiFi etc etc
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Any phone that originally is sold by AT&T or Cricket will have it enabled.
[Samsung Galaxy S9  Guides, News, & Discussion] BlackReflux:
I have u1 so and I want to flash android 8 0 can this be done ? I originally had at &t variant locked and got it unlocked and flashed u1 now battery drains like hell
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Depends on what bootloader level your phone has. If it's 4 or higher, then no, there is no way to go back to Android 8.0
[Samsung Galaxy S9  Guides, News, & Discussion] BlackReflux:
Sorry to be a noob . But how to know on which bootloader version I am on ?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
It's found in the Build Number. I would really recommend finding at least one of the "beginner's guide to Odin flashing"-type posts/threads here on XDA and reading up more on the process. Being able to read a Samsung Build Number and know what all the numbers and letters mean is going to be essential knowledge if you're going to be doing any Odin flashing. You don't want to waste your time by downloading a version that won't flash, or by flashing a version that isn't what you actually want
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
AT&T USERDATA added for bootloader 8 - build TH5
[Samsung Galaxy S9  Guides, News, & Discussion] klingon888:
Thanks for posting this. Getting the following error. I've tried multiple downloads across diff mirrors and still same error opening. Tried with WinZip and 7-zip. Thanks.
[Samsung Galaxy S9  Guides, News, & Discussion] neginiraj:
Stuck on Google account recovery, need to remove frp lock .

Model - SM-G960U1

AP-G960U1UEU8FTK2

Csc- G960U1OYM8FTK2

Country - XAA

Phone is secured by knox, with help of frp tool able to get in the menu but still not getting all the option on the settings even not able change the pin. Is there anyway to remove or bypass the recovery option?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
XDA stopped notifying me of new replies somehow, a few weeks ago. Probably something to do with the site changeover. If you still need help getting the FRP lock removed, I can provide a recommendation for a professional 3rd party business to do it.

For everyone else: I guess somehow I missed adding the Cricket USERDATA for bootloader level 8. That has been added now, via the links in the OP. And I also added the rest of the firmware files from that build (TK4) because I didn't see it uploaded anywhere on AFH yet.

Bootloader 9 updates will be rolling out in the next couple weeks, so I'll add those USERDATAs as soon as I get access to them
[Samsung Galaxy S9  Guides, News, & Discussion] arc1976:
Hey, I am trying to flash U1 fimrware on T-mobile galaxy s9 G960U, when I use files provided in this thread(Odin3_v3.13.1_3B_PatcheD, G960U_RB7_1) the odin crashes. The phone runs on android 10. Please Help
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
It's failing because you're trying to flash firmware that's 3 years old
[Samsung Galaxy S9  Guides, News, & Discussion] arc1976:
:LOL: Yeah i get it, is there any other way to do this
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Well sure. Flash something that was released in the past few months
[Samsung Galaxy S9  Guides, News, & Discussion] pyoung9:
Bit 9 combo firmware? Any idea if/when that will be available?
[Samsung Galaxy S9  Guides, News, & Discussion] dungeon_mesher:
I've been trying Tenorshare 4uKey to no avail on my SM-G960U. Any other recommendation to remove FRP on the latest A10 firmware? It's bootloader v9
[Samsung Galaxy S9  Guides, News, & Discussion] billa:
Unfortunately there's no combination firmware available yet for bootloader v9, however you can use paid services to remove the FRP.
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Bootloader 9 files have (finally) been added for AT&T - both USERDATA and (because I think every other carrier got v9 back in January, so no one else will get this same build) the rest of the full firmware files
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Cricket USERDATA was just added also
[Samsung Galaxy S9  Guides, News, & Discussion] simpatiseur:
Helle

Do this model g960u have a locked bootloader??
[Samsung Galaxy S9  Guides, News, & Discussion] simpatiseur:
Do you know how to unlocked it?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
No
[Samsung Galaxy S9  Guides, News, & Discussion] cybermiguel:
Hey guys. Is there any way to flash a G9600 firmware to a G960U phone?
[Samsung Galaxy S9  Guides, News, & Discussion] iBowToAndroid:
Nope
[Samsung Galaxy S9  Guides, News, & Discussion] 2lowteg:
Ok, I have a question I need help with. I have a at&t S9 G960u which has been unlocked via code. My device was made pre 2018 so I don't have VoLTE on this device, as pre 2018 it wasn't available. If I flash to the G960U1 firmware, will my VoLTE work? I've been rooting and flashing for a while now, and I'm not even worried about root or switching carriers since its already unlocked. I'm only interested in VoLTE. -So if it won't work, I'm not even going to mess with it. Does anyone have this info?
[Samsung Galaxy S9  Guides, News, & Discussion] droideris1:
to be clear, if I were to flash the verizon firmware onto my phone (U1) with the userdata file, would i get all of the verizon features, like wifi calling, video calling, etc.? Those don't work on the unlocked version. Also, since it would then be technically a verizon phone, would it get the software updates pushed out to it from verizon? Or would i need to manually flash each update since it isnt an official vzw device?

Sorry for the n00b questions!
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
My experience thus far has been: NO.

You may get some like HD Voice and Visual Voice but no Video Calling.

But you can try maybe I did something wrong.

Just don't put your VZW sim in the phone until you have everything flashed VZW and boot with no sim, go through the necessary setup without the sim card then put the sim in after.

Maybe they got my IME and locked it in as a unlocked phone when I flashed the first verizion U1 firmware, then switched to the U firmware but I'm already flagged?
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
So I just flashed back to the stock U1 firmware, I tried everything to get a fully functional VZW phone but I think the IMEI numbers has to be within verizion's known block to get full provision. I say this because after I flashed my phone to a full verizion G960U, I mean boot up with the Hello VZW red splash and all the bloatware games and VZW apps like Hum? etc. But when I logged into my VZW account to activate HD Voice and what not I could see my phone profile was still SM-G960U1 and it has some other stuff with OD at the end. The tech I argued with said "OD" "open development" device and that would never get provisioned. Thats like a catch all flag for unlocked bootloaders, jailbroken, rooted, modified etc. I don't how correct he is about that but the profile still said U1 so I think they know which IMEI is a factory unlocked and which is not.
[Samsung Galaxy S9  Guides, News, & Discussion] Psyscope:
Waits what's better RBG or RB7?
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
RBG is newer.
[Samsung Galaxy S9  Guides, News, & Discussion] adiliyo:
so just to be clear, if i flash the U1 firmware on my tmo s9 with the home CSC, that will change my tmo branded s9 to the unlocked model's firmware? (i mainly am trying to get the stock call blocking/scanning feature that tmo took out)
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
Yep that should do it.

You may need a factory reset first.
[Samsung Galaxy S9  Guides, News, & Discussion] janame:
What USERDATA should be used with the U1 firmware? I have a U1 device which I flashed to VZW U_RBG (was having problems with a MVNO), and would like to return to U1_RBG.

EDIT: Interestingly, I saw all the VZW bloatware (e.g. Message+) after flashing, but after a factory reset (on the phone), I no longer see it, even though the phone reports the U build: R16NW.G960USQU1ARBG. Did the factory reset restore the stock U1 USERDATA?
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
So Noone has gotten this to work on AT&T correct?
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
I'm not certain where the userdata is flashed to but the most important thing is do you still have the Red Hello boot splash screen? I you still see that then your still on VZW version of the firmware.
[Samsung Galaxy S9  Guides, News, & Discussion] StolenVW:
I flashed my unlocked to the AT&T firmware and its working just fine, wifi calling and video calling are there now
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
Where'd you get the AT&T firmware? I've been looking a the other links and they didn't seem to work for me.
[Samsung Galaxy S9  Guides, News, & Discussion] StolenVW:
From the links in the first post....getting the userdata was the worse it would keep on saying complete after downloading 50mb.....had to use chrome and resume it bunch of times to get it fully downloaded
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
How did you flash the User data? I know people said the UMS location but it's grayed out on Odin
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
OK, so I finally got it to flash, though some of the info int he "about phone" says "U" and some says "U1". All the AT&T apps came over, but none work. Were you able to make them work on AT&T?
[Samsung Galaxy S9  Guides, News, & Discussion] dkitsos81:
quick question

quick question, which files did you use? I too have the s9 unlocked

Did you use the 960u or u1 firmware to get everything loaded?

I have the unlocked which is u1 but was going to flash to the 960u to get calling plus working, is that what you did?
[Samsung Galaxy S9  Guides, News, & Discussion] kidoelement:
Ok question, is it possible to flash a TMobile firmware to a Verizon unlocked s9? I miss hd calling, visual voicemail and video calls.
[Samsung Galaxy S9  Guides, News, & Discussion] StolenVW:
the ones I tried work.. I used the odin from this tread https://xdaforums.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200 and I used the CSC file not the Home_csc

I flashed the U RGB one
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
Have you tried the AT&T Call Protect? I did find a "modded" Odin that worked but the apps don't. Guess I will have to do as you suggested and try again.
[Samsung Galaxy S9  Guides, News, & Discussion] highaltitude:
Well I think it may be like another user pointed out,my phone may have gotten marked somehow. Either the IMEI or somthing, but none of the apps work. Got everything to flash but they don't work.
[Samsung Galaxy S9  Guides, News, & Discussion] StolenVW:
Call protect opens fine for me and has a log of all my incoming calls
[Samsung Galaxy S9  Guides, News, & Discussion] toronado13:
Not sure what I'm doing wrong... I downloaded all the RB7 files and the att userdata and the modded odin. Everything appear to load fine and successful. The phone is a Verizon unlocked U firmware, and I am trying to dump the U firmware on it with the ATT usersdata, but it still comes up with the VZW splashscreen. Is it not possible to change it from one to the other like I did with my VZW s7 I reloaded with ATT firmware?
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
Did you do a factory wipe first? Then flash with csc not the home with your AT&T Sim in the phone.
[Samsung Galaxy S9  Guides, News, & Discussion] Rex2307:
Apparently it's impossible to get rid of any carrier splashg screen. I've been told it is because of the Multi CSC and all firmware are the same. I don't know how it all works. I have tried flashing my S9+ with a carrier splash screen with stock firmware and even went as far using another countries firmware and I still get the splash screen.
[Samsung Galaxy S9  Guides, News, & Discussion] toronado13:
Just tried it again with a factory wipe, swapping in my AT&T sim and used Odin to flash. Same results, it boots up to a Verizon boot screen and won't activate the phone, complains about not having a Verizon sim. If I swap back in the VZ sim it's all still the VZ apps, no AT&T.

Would I be better trying to flash a U1 firmware? Would that take my phone to a clean firmware without any carrier stuff? or is that something that will brick it? I'd prefer the AT&T stuff if I could, just to make sure I can do any AT&T only features... but if I have to I will.
[Samsung Galaxy S9  Guides, News, & Discussion] Rex2307:
It will never work because of the multi CSC. I have flashed the UK and German firmware and still get the carrier splash screen
[Samsung Galaxy S9  Guides, News, & Discussion] bzzybfrm313:
U1 gets rid of carrier splash screen at least on tmobile
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
Try again using this patched Odin

https://xdaforums.com/android/software/patched-odin-3-13-1-t3762572

I'm not sure then since I have a factory unlocked U1 model. I was able to flash VZW full software with the VZW red hello and all the apps. I have since flashed back to the samsung firmware, no VZW splash screen no vzw apps etc.
[Samsung Galaxy S9  Guides, News, & Discussion] Rex2307:
Might be different with unbranded S9/S9+. But my partner got one from Optus and I told her it would be easy to get rid of the Optus splash screen. I flashed with stock firmware and then tried the UK and German, but still have the Optus splash screen.
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
Yeah, I don't really know, I'm working with a Snapdragon US model, and this is my first Samsung, I've always had HTC smart phones, so I'm no expert.
[Samsung Galaxy S9  Guides, News, & Discussion] toronado13:
No Dice... tried it again and still getting Verizon splashscreen and asking for a VZW sim.
[Samsung Galaxy S9  Guides, News, & Discussion] Rex2307:
Too bad it's only for S9 and not the S9+
[Samsung Galaxy S9  Guides, News, & Discussion] yeltrah123:
Wait you have the unlocked SM-G965U1? How did you flash? Did you use latest version of Odin or did you use modified version? Also did Knox get tripped??
[Samsung Galaxy S9  Guides, News, & Discussion] mc_365:
I got the 9 U1.

I flashed with 3.13 stock and flashed the full VZW U firmware and user data.

I flashed back to the unlocked U1 stock firmware with the modded odin.
[Samsung Galaxy S9  Guides, News, & Discussion] toronado13:
Can I even flash a U1 onto my U firmware phone? Or will that cause me big trouble?
[Samsung Galaxy S9  Guides, News, & Discussion] ajairola:
Check out this thread