yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
International firmware can't be flashed to a US model - never have been able to, never will be able to. Just because it's bloatware free doesn't make it "international". But yes, flashing the U1 firmware package removes all of the bloatware - it's been that way ever since the S7
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] tijsva:
Sorry, typo, should have been "unlocked" firmware.

You still haven't answered my question though :D Have you got confirmed results? Proof? I see you had good results for the S10 series, but so far I can't seem to find similar results for the S20 series.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] konoplya:
i got advanced messaging by just inserting a T-Mobile SIM into my unlocked s20, it restarted the phone and i even have the wifi calling too
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
The proof is already here in the thread. Many users have already done it
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ChongoDroid:
I'm not sure, I am in Canada and I flashed it no problem.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] hydrabean2013:
okay anyway, I just changed my CSC from TMB/XAA to XAA/XAA by doing this

"Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC that you want and tap the Install option."

and it worked. my phone restarted and this time without T-Mobile logo and my regular sim card of Oman is working fine as before.

so do you think it is possible/safe to clean flash the latest U1 XAA firmware.

and if anything goes wrong, can I return back to my regular firmware U T-mobile firmware?

I just don't want any carrier bloatware and any carrier logo in my phone....

wish I could ROOT

thanks
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] hydrabean2013:
Anyways, i have successfully flashed U1 CSC XAA to my Phone.

Thanks for the support
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ChongoDroid:
Glad you got it sorted.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Dmandin:
Sprint sim unlock

Hello,

I'm requesting a sim unlock service or method for my sprint sm-g981u. Any and all help is appreciated!

DD
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] laohu586:
Yep, I used a nintendo switch cable and it didn't work but did when I flipped the direction I plugged it in...so weird.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] bsilvertab:
I have a an unlocked S20 that I'm trying to get on the latest October security patch with the ATT bloat for Wifi Calling. I factory wiped the phone and installed the lastest files from this link for the G981U. https://www.sammobile.com/samsung/galaxy-s20/firmware/#SM-G981U

The load was successful but my phone is stuck at a June 1, 2020 security level and it won't OTA update. Did I download the wrong files? I don't care if it is a U1 load or U, I just want wifi calling to function and to get regular updates OTA. Help.....
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
It states pretty clearly that build TIF is September security patch... So if you wound up with the June patch, you did not flash whatever the latest version is
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] bsilvertab:
Good call. I must have been using old files in Odin. I re-download from Frija and now I'm at least on the September patch. Better than nothing.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] tpunkttpunkt:
Use Sprint S20 outside of US?

I bought a refurbished S20 on Sprint from ebay and I want to use it here in Europe. Do I need to unlock it to pop a European sim in? Does anyone know if i can use 5g normally here? (Not that it's important given it's not mm wave 5g anyway). Can someone explain what it means when the Sprint lock is "inactive" and if has anything to do with it being locked?

Thank you so much!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
1. Every phone needs to be SIM unlocked from its original carrier, in order to work with a different carrier or network

2. I have no idea if an American 5G phone will work with European 5G service.

3. I have no idea what "Sprint lock is inactive" means.

4. I can provide a recommendation for a professional 3rd party business to do the SIM unlocking for you, if needed
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] tpunkttpunkt:
Please do!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Alikara_27:
Hello. I live in turkey and my phone s20 of ultra-sm988. My current software is btj4.

[/PHP]Hello. I live in turkey and my phone s20 of ultra-sm988u. My current software is btj4. I can not get updates on my phone via ota. What should I do to get updates via ota? I would be glad if anyone helps. I know how to use odin.

I would be glad if you write my English in a poorly understandable language.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Probably the OTA has not been pushed out to your phone yet. Wait 2 weeks and see if you get an update. If you still have not yet gotten an update after 2 more weeks, then post again
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] tpunkttpunkt:
If I wanted to unlock my Sprint phone and flash the U1 Rom, would I ideally first unlock and then flash U1 or the other way round?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Well that depends on how you accomplish the SIM unlock. If you can get Sprint to do it for you, then they're probably gonna need it on U firmware. If you get a 3rd party professional business to do it (I can provide a recommendation if you're going this route) then it'll depend on what their capabilities and preferences are
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] beyondinferno:
I flashed my tmo g981u to the u1 firmware xaa and have been using the phone for a couple weeks. I noticed I'm not getting ota updates (still on btj2) and it doesn't find any updates through smart switch either. The only thing I noticed reading online is after I did flash it through odin, I didn't remove my sim for initial setup. I don't have any tmo branding but I'm not sure if maybe skipping this step broke something?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Nothing has been broken. Your device simply hasn't been sent the OTA yet. You'll get it eventually, but if you don't want to wait, then just install it manually
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] beyondinferno:
Am I really that paranoid?... Lol

It's been a very long time since I've flashed anything and I feel like I have a lot of catching up to do. Thanks for the unreasonably fast response!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
You're only one version behind, and the newest version was first released only a week ago. So it hasn't been pushed out to all devices yet
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] geovany.r96:
Hey xda I am in need of some guidance. The last time flashed firmware was when the S4 was new so please bare with me. I recently purchased a G981U with t-mobile bloatware. I'm currently using the phone on cricket wireless and would like to use the wifi calling feature but from what I've read it seems to be disabled from cricket's end and flashing att firmware is the only way to have that feature enabled with Cricket.

Is this true? Is there a video guide someone can recommend? Any tips are appreciated :D
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
No idea if wifi calling on Cricket will work on AT&T firmware. But you can follow the steps in the OP for converting firmware, and see if it works
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Alikara27:
Hey, hi

I still haven't received an update via ota on my phone. I still haven't received an update via ota on my phone ?

Thanks.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
I previously recommended that you wait 2 weeks, and it has not yet been 2 weeks. But if you're tired of waiting, you can manually install the update at any time
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Alikara27:
The 2nd update has arrived but?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
I don't understand your message
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] strifej:
Hey, been reading the last hour or two, but a bit confused for the Samsung stuff (I know my LG after having 4 of them recently).

I bought an imported S20 in Malaysia (they don't see the 5G models locally). The phone is a US model. It's on April 1 security patch, so I wanted to update it.

The model is SM-G981U.

*#1234* code shows that the CSC is: G981UOYN1ATCT

About -> Software -> Service provider SW ver.

SAOMC_SM-G981U_OYN_XAA_QQ_00006

...

XAA/XAA/ATT

So, from this post: https://xdaforums.com/t/successfull...-s20fe-5g-on-tmobile-by-changing-csc.4183325/

That 3rd line is showing Current/Previous/Original CSC codes. Does that mean this phone was originally a AT&T flashed to XAA US Unlocked?

What's the best way to get it updated outside the US? Use ODIN to flash? If yes, in Frija, which CSC do I use? OYN/XAA don't work. I would like to stay on US Unlocked if possible.. but not sure what CSC to pull?

Also, I see lots of ODIN versions. Is the Odin3_v3.13.1_3B_PatcheD the proper ODIN to use?

Also, doing the *# *#27262826# *# * code, it shows it's currently XAA/Single and has a lot of choices.

Thanks!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] tpunkttpunkt:
Does anyone know if there is ANY way to make use of the esim functionality on US Snapdragon models? I heard some TMB users can use it. Would it be enough to flash a TMB rom on my G981U1 to unlock this esim feature?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
1. No, it hasn't been flashed to "US unlocked". "US unlocked" would be U1 firmware, not U firmware

2. The OP already tells you which CSC to use, if you want U1 firmware

Only the carrier can enable it
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] entropism:
That's incorrect. No US model has ESIM enabled.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] strifej:
Thanks for the quick reply. Guess my new questions is:

It's completely safe to flash from ATT -> XAA ? OP does say yes, but there are no firmwares for ATT, so I can't go back, correct? The phone is being used outside the US, so XAA should be the best way to go?

Thanks!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
The OP clearly states that "any U or U1 firmware version can be flashed to any U or U1 device at any time". So yes, you can go back if desired
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] strifej:
Ah, I see the ATT firmwares on sammobile under the SM-G981U1 model. Is there any reason ATT is listed under U1, but my phone which should be ATT (from the CSC) is just U?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Ignore the CSC. It means nothing. The only thing you need to be concerned with is whether you want carrier bloatware, or not. If you do want it, flash U firmware. If you don't want it, flash U1 firmware
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ccmp76b8:
hello everyone, a samsung that has a no brand firmware flashed (SM-G981U to SM-G981U1) keeps receiving ota updates? thansk
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Alikara27:
[QUOTE = "iBowToAndroid, gönderi: 84065547, üye: 3163377"]

Mesajını anlamıyorum

[/ALINTI]

hi, it's been more than 2 weeks and still no updates via ota. current version btj4.

Thanks
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Then flash the newest version manually
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] losonn:
Has anyone on G981U1 successfully updated to Android 11 via OTA yet? If the update isn't appearing on a given device is there any other way to enable the update without flashing manually?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
11 hasn't been released for the U1 models yet. So as of this moment, if you want 11, you have to flash U firmware
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] losonn:
Thanks for the info. Has Samsung announced a release date for the 981U1 update?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
I don't think they ever announce dates, for any version, for any model. I think they only ever do general timelines - specific quarters or months etc
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] losonn:
How long do the updates for the s20 unlocked variants usually lag? I remember experiencing the same obnoxious update lag issue with my s8 950u1 and I'm surprised Samsung hasn't straightened this out yet.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] entropism:
T-Mobile pulled the update for whatever reason, so I'm sure that delayed the unlocked version too.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
There's nothing to straighten out - they do that on purpose. U variants outnumber U1s by 25 to 1, I'm sure. So they want to focus on getting the update out to as many people as possible to begin with.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] losonn:
I get the logic. It's just counterintuitive that the updates for the unlocked s20 variants that don't require integration of carrier bloatware or carrier specific testing are somehow the updates that get rolled out last.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
I already explained it. Idk what else to tell ya
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] treydev:
When flashing a11 U firmware over a10 U1 firmware, is it enough to flash HOME_CSC and no USERDATA to prevent erase? Thanks.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
No. A wipe is always required when going between U and U1
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ccmp76b8:
thanks
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] losonn:
The ota 3.0 update for 981u1 just dropped. Get it if you need it.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] xela19115:
I have G981U1 and on Beta One UI 3.0 and just checked. Nothing new.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Idk exactly how their beta system works, but you may have to be on an official stable (10.0) build in order to get it. If they do allow you to OTA from a beta build, then it will take time to be pushed to your device. All updates are always staged in rollouts, regardless of carrier or version.

I just checked and the Odin files are on Samsung's server though, available via Frija for anyone who wants to update immediately
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] xela19115:
Just got it.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] venkycool:
I have s20(SM-G981U) locked to t-mobile USA I want to know If i flash U1(XAA) firmware will it unlock the device and able to use it with any sim?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ththugues4:
my s20 to lock on t-mobile I just tried it by flashing the room of sm-981u for sm-981u1 according to the various advice of the people of this post, I can download the updates from samsung, for what is the network locking this is still active but with the only difference that it requires an unlock code, things that with the t-mobile rooms it did not require.

how do you get this unlock code?

Thank you all
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ththugues4:
Hello

I just flashed my locked phone on T-Mobile with the SM-G981U1 room. Now my samsung asks me for a SIM unlock code (Herewith Photos.) With input box.

I would like to know a reliable solution how to get this unlocked?

Thank you
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] venkycool:
go to doctorsim.com and ask for unlock code they will charge you around $25
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
No, that won't work. There is no code that you can get in order to unlock the device, because T-Mobile does not use unlock codes by default - so therefore no code exists in the database, like they do for the carriers which DO use unlock codes. Unlocking a T-Mobile device is much more complicated and difficult than that. I can provide a recommendation for a professional 3rd party unlocking company if needed
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
AT&T USERDATA for Android 11 has been added - build TL1.

Someone else already beat me to uploading the full TL1 firmware package on AFH, so you can download that if you need the rest of the Odin files.

And from now on, you can expect AT&T USERDATAs to be added right away, when new bootloaders and new Android versions are released :)
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] tonysunshine:
could I in theory flash this rom

[ROM][G988U/U1/W]SamPWND.R.Official 1CTKH

Hello! Please forgive me as it's been a long time since I made/posted a stock based ROM as I have been mainly doing security research and dealing more with source code last few years. Most seasoned Samsung users on here probably already know me...

xdaforums.com

then flash the AT&T USERDATA on top of it?

I'm basically trying to have a rooted S20 with AT&T wifi calling enabled
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
That's for the Ultra, not the regular S20
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] NJ_RAMS_FAN:
Hi. Long time I haven't been here. I don't even know where the search button is. Heres my question. My friend handed me a good condition ultra locked to att. I want to use it for tmobile but I can't cause it locked. Att doesn't want to unlock even though he paid it off. My friend is going to find them..

This might be dumb question, but would flashing unlock samsung firmware actually also unlocked the network on phone? Lol. Or I need to unlock first via att code???
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
No, flashing U1 will not magically unlock the phone. You need to actually get the unlock code. I can recommend a professional 3rd party business to do it, if AT&T refuses
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] NJ_RAMS_FAN:
Lol. That's why I said. This might be a dumbbb question. Lol. Thanks man. I'll let you know.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] alirz:
Someone please remind me. I'm looking to manually flash fw from the February UI3 update to the ui 3.1 March update for the u1 model.

Odin seems to suggest to remove google and samsung account from the phone before the flash. Is that really necessary?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
If you're not performing a factory reset, then no, not really
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Geekser:
I never do - and I flash firmware thru ODIN all the time. Good Luck!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Qusyairi626:
Hi, i just want to ask why does my phone got Sprint in my Contact List, but i didn't add in. My phone model number SM981U and Unlocked. How do i remove it because i live in asia.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] ChongoDroid:
U1 model april update doesn't have the duc7 camera improvements.

Ugh.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Bootloader 2 firmware and AT&T USERDATA has been added for the U model - build UDA
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] bocondo:
I have T-Mobile version of S20, which was unlocked long time ago. I recently switched to Verizon and the phone working perfectly fine. This morning I received security update for May 2021 from T-mobile and after that phone is not able to connect to network.

I used OP's version of Odin and VZW Firmware downloaded from Sammobil and was able to revive the phone. Thanks a bunch OP!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] harleyusa59:
I Love your Roms..... you do GREAT. When are you going to make one for us that use Samsung Z Flip 2 phone?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
ROMs? These aren't ROMs. I think you're completely misunderstanding - or you just haven't read the OP.

I only ever post official Samsung firmware.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] nolabowler:
i need help please........ I have a S20 5g SM-G981U T-Mobile phone that is unlocked. It has tmobile bloat on it......now for the issue.... I am on AT&T and have tried to flash U and U1 variants to get a Stock AT&T bloated phone with no success. It boots with the tmobile splash screen on every U firm ive used. I can get U1 with no bloat from anyone which i think is basic samsung firm. i dont like all of att bloat but do like some of the carrier enabled apps, so im looking to flash the stock att firmware. Also no matter what the carrier version always says TMB/TMB/TMB/. i have my att sim card in now and everything works, but its wont flash to a stock att rom with att carrier settings. Can anyone point me in the right direction? i have tried the OP files and method several times.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
Do you not get the popup prompt to reboot to apply new carrier settings, when you insert an AT&T SIM while on U firmware?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] nolabowler:
no i dont get anything.......im going from 981U UDA to the newest official firm ware and i cannot get it to Stock ATT Firmware. Text, calls, internet all work and its unlocked but stillllllll tmobile splash screen and apps.
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] nicoseb:
I have a S20 5g SM-G981U T-Mobile, unlocked version.

Like many others, very frustrated at the lack of the eSIM feature... Did anyone get it to appear (get the EID code) once the U1 firmware has been flashed? :D
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] gvallenas66:
i changed to the u1 firmware but i don;t have VOLTE has anyone had this problem or a way to fix it?
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] gvallenas66:
can someone help me get VOLTE again used to have the USCELLULAR firmware and changed to U1 and VOLTE is active in setting but it doesnt work
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] sreyn:
Newbie that probably made a mistake......

I purchased an unlocked, G981U1 phone. Worked okay with AT&T but I didn't have some features including WiFi calling. The phone had TMB software per review of the Software Information screen. Decided to change to AT&T's U firmware to try to get WiFi calling. I first tried the firmware in the link in the OP of this thread (G981U_TAW_1). First step seemed to update okay (BL, AP, CP, no home CSC) but I never got the "reboot to apply new carrier settings" and the software still seemed to be from TMobile since I saw still saw TMB in multiple places on the software information screen page. I then gave G981U_UDA_2 firmware a try. This updated fine but then I had the T-Mobile splash screen and I could no longer get service with my AT&T sim. I tried uploading the USERDATA file but that didn't make any difference. I am now reading more about this UDA and think that I now have a bootloader that won't let me go back to a U1 version. I am using Odin 3.14.4 but get the SHA256 error. At this point I would like to get either to the AT&T U version or the generic U1 software. I hope it's not too late to yell HELP!
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] Hellboy4:
can U(xas) firmware flash U1 (xaa) without reset ?

thanks in advanced
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] mcssym:
After reading this thread, it seems it's better a U than a U1.

I just bought a SM-G981U1/ATT unlocked. I wonder why I have ATT instead of XAA.

So, my question is:

Should I pass the firmware U1/ATT to U/XAA?

Thank you
[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] iBowToAndroid:
It shows ATT because that's where it's originally from. Then someone flashed U1 firmware to it