yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] thecrunked:
i unlocked my at&t device (when it was running the official at&t carrier bloated firmware). there is no menu, dialer code, or app to unlock the phone. you have to put in a simcard from any other carrier (except cricket) and youll get a prompt to enter your unlock code. i would try doing that before flashing any firmware.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] jason1332:
Also what I did.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] AndroiderM:
I used the dialer code *#197328640# to unlock my AT&T S8+ on the factory firmware before flashing US Unlocked. It gives a pop-up that ask for code. This code do not work on unlocked firmware as no USSD codes seem to work.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] ShrekOpher:
Agreed this code works great. Provided to me by att
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Jaysonvstel:
https://xdaforums.com/att-galaxy-s8+/how-to/flash-g955u1-engboot-tar-modified-odin-t3627220
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] power_book:
Finally pull the trigger, G955U1 XAA is great. No AT&T bloatwares. And OTA works fine without AT&T active sim.

Phone reboot to accommodate new SIM to enable carrier specific feature. T-mobile sim enables Wi-Fi calling. No Wifi calling on AT&T sim though.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] jaypr9:
Quick question. I did change to u1 firmware before which is just the unlocked firmware for the s8+ right? I never got anything for software version though, like I never had att/att/att. Under software version. Is this correct and how it should be?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Elastep:
What do you all mean by "unlocked"? Just debloated? Not sure what are the benefits of switching? Thanks!
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] power_book:
Unlocked usually means carrier-unlocked. You can put any sim cards your want to use (not locked to AT&T). You have to get subsidy unlock code from AT&T.

unlocked version of firmware is SAMSUNG firmware that accomodate various service providers in US (flashing this "unlocked" firmware doesn't make your phone carrier-unlocked).

debloated: get rid of any software AT&T put in the phone.

If you're using AT&T service then there's no benefit.

Benefit:

Software OTA update without AT&T service: if you're using AT&T S8 in other carriers or MVNOs, you can't update your software (because you can't connect to AT&T DM server).

You can also activate wifi tethering without AT&T service.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Elastep:
Thanks! Now it's clear.. Seems makes not much sense for me as I'm on AT&T
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] jaypr9:
I thought a benefit even being on att was that you wouldn't get all that att bloat also and free up some resources?

Also never got the original question answered when you flash u1 firmware nothing is shown correct, as in att/att/att? If only u1 is flashed. Wanted to make sure I did it right... I've done frakenstein flashes where I did u1 with att userdata to get some of the att bloat.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] power_book:
I don't see that section after U1 XAA flashing with CSC.

If I flash with home CSC from AT&T firmware, I get that section with ATT/...

Yes, you remove bloatware but you also lose WiFi calling, video calling and Voice over LTE.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
Hey, just getting my S8+ tomorrow, it's the AT&T version (unlocked) and looking to flash this firmware - is the Odin version in the thread you linked the one that's supposed to be used to flash? Or is it the Odin version in the OP of this thread? Been reading through the thread a Googling, but not sure which one is "Prince's" Odin version.

Noob stuff, I know, but I'm coming from the Nexus 6p, haven't had to use Odin in a couple of years so haven't kept up on it. Thanks!:)

Edit: Think I found it - is it Odin3 v3.12 PrinceComsy? Not sure if it's the latest, found it at this URL: https://www.androidfilehost.com/?fid=24591023225177749
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
Do you know if you can get AT&T updates if you're using an AT&T MVNO? I'm getting a sim-unlocked AT&T S8+ tomorrow to use with H2O Wireless (AT&T MVNO) and trying to decide if I should flash the U1 firmware or not. If there's no benefit and I can download updates, then it doesn't seem worth it just to get rid of bloatware that I can disable.

Edit: Got my phone, guess I have my answer - no, can't update AT&T firmware with AT&T MVNO. Installed U1 and receive OTA update, all seems to be well!

Question: What's the difference between the Home and non-Home CSC? I've been reading conflicting information about which one to use in this thread, so I went ahead and used the non-Home CSC - seems to have worked fine.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Xak:
Do we have STOCK AT&T firmware to flash back to for us in warranty (notreallyinwarrenty), also is battery improved or worse. Ive always been able to return phones after flashing back to stock on AT&T next. getting s8+ soon on AT&T and wondering if any improvements over this varient dont care about wifi calling or video chat. Question actually with wifi calling can i be out of country connected to wifi and call for free with wi fi calling or on cruise using wi fi calling and call for free without extra data charges.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] power_book:
If you flash with Home CSC from AT&T firmware, you keep AT&T userdata. -> you won't get OTA update.

Since you used non-home CSC, you got unlocked XAA userdata.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
Cool, thanks! Guess I made the right choice, since getting OTAs was my goal.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] aigochamaloh:
I have several T-mobile S8+ from their BOGO, after I fulfill 40 day requirement for permanent SIM unlock, can I flash unlocked firmware or VZW firmware to these phones and give to my parents to use on Verizon?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] MeltdownSpectre:
You can do whichever you want. Both will work fine.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
I think it's available here: https://xdaforums.com/att-galaxy-s8+/how-to/g955-stock-odin-g955usqu1aqd9-t3601632

---------- Post added at 10:05 PM ---------- Previous post was at 10:04 PM ----------

Probably a stupid question, but I'm assuming there's no point in flashing the ATT userdata if you're not using AT&T service? I'm on an AT&T mvno, so just checking.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nate0:
Just got one of these...Anyone found a way to debloat via flashing with odin and still keep VoLTE/Enhanced services on the att branded s8+? I read earlier that modding the at&t csc and flashing it will allow the enhanced services through and since the imei of a branded at&t model is in their database that seems the way to do it.

UPDATE: I debloated my ATT model with the U1 FW and was able to get volte and enhanced LTE services too. Thanks for this thread!
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
i just picked up my s8+ today, im going to drive the stock rom a few days before i install the Unlocked firmware. anyone have any battery life comparisons yet for stock at&t rom and the unlocked one ?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
Question: does installing the U1 firmware affect warranty registration? I bought my S8+ (new, unlocked AT&T version) on eBay from a reputable vendor who told me that it should still be in warranty. Since I'm on an MVNO, decided to immediately flash the U1 firmware, then proceeded with the standard setup, including logging into my Samsung account on the phone. Now it's showing as out of warranty in the Samsung+ app and in the website. To be clear, I never did a setup or Samsung login with the original AT&T firmware. Thinking of flashing back to the OG firmware to see if this affects it. Could also be because I didn't buy from an "authorized" vendor, of course.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
This is a first! does it work just as good as the branded Rom
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nate0:
I still ended up with Facebook for some reason. All the at&t apps and many others were gone though. My model was listed as G955U1 but the SW/Service provider listed as ATT/ATT/ATT. My goal was still get the latest updates and keep the HD voice/VoLTE as I kinda depend on it. It did not get any newer updates though...was still on the April patch...However I have deicided to go back to my roots and am back on my HP Elite X3 for now...

---------- Post added at 03:26 AM ---------- Previous post was at 03:26 AM ----------

The warratny should be tied to Serial/IMEI. The manufacturer warranty is also 1 year from date, so I wonder if something screwed up how Samsung sees your device.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
I verified that the Knox flag wasn't tripped in bootloader, so it's not that. Probably going to delete the device from my Samsung account, flash the stock FW and re-register, see if that works.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
i dont see what so important about the volte anyway, id rather keep wifi calling. i am impressed with the battery life thus far on the stock rom, my s7 edge would be dead by now on its stock 7.0. I took my s8+ off the charger at 3am and its now 10:39pm here and i still have 33% left and ive been using my phone like crazy all day.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
Well, deleted my phone from my Samsung account,I flashed back to stock AT&T, registered with Samsung on my phone, and the Samsung+ app is now showing that I'm covered by the standard warranty.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Duffmantp:
So if im already on 955U1 CSC ATT. But because i bought the unlocked version i dont get wifi calling or enabled VoLTE, which i kinda need.

from what i gathered, i can flash to candian then back to ATT FW and then flash userdata to remove all bloat but keep Wifi and VoLTE.

Am i correct?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nate0:
Honestly it is the HD voice I enjoy and need. VoLTE does not really matter to me either...
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] dtomlin:
The HD voice is why I switched back to at&t stock
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nate0:
I flashed the XAA ROM

AP_G955U1UEU1AQDC_CL11247461_QB13384431_REV00_user_low_ship_MULTI_CERT_meta.tar.md5

BL_G955U1UEU1AQDC_CL11247461_QB13384431_REV00_user_low_ship_MULTI_CERT.tar.md5

CP_G955U1UEU1AQDC_CP6347068_CL11247461_QB13384431_REV00_user_low_ship_MULTI_CERT.tar.md5

CSC_OYM_G955U1OYM1AQDC_CL11247461_QB13384431_REV00_user_low_ship_MULTI_CERT.tar.md5

Got online took the latest update to June, then flashed the ATT Home CSC

HOME_CSC_OYN_G955UOYN1AQC9_CL10895874_QB12856072_REV00_user_low_ship_MULTI_CERT.tar.md5

So...I probably won't get any more recent patches or updates as they get released. But I get VoLTE/HD Voice/IMS registered etc...
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
Where can i find these files at ?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nate0:
All linked from this site. The first 4 are linked on the original post as Updated XAA rom linked via Drive.

The Home CSC is from one of the ATT full odin restore Roms floating around in this forum.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
I installed the at&t csc file last night, and my firmware is listed as the 955u1, everything seems to work fine but when I have the volte enabled I can't make or receive calls.

I've turned the feature on and off and rebooted my phone and still nothing, how would I possibly fox this because I can't use the WiFi calling without the volte being enabled.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nate0:
Did you flash all of the above before hand? I considered myself lucky in a sense as I was just winging it flashing the images and it all worked.

Maybe you had already flashed a different CSC originally then what I listed above and that one is conflicting now with the ATT Home csc? I am not sure what the issue is on yours. I guess you could flash the non-home ATT CSC too. I have flashed that one the very first time and enabled Enhanced LTE too. Someone else may have to help you on that one...but let me know if you have more questions, and maybe I can answer.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
No I was already running the 955u1 and flashed only the att csc file, I will try flashing everything later on and try it again.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] bill10:
I wonder if someone can share how to debloat the Odin version
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Elpoep:
Deleted.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
I've followed nate0's instructions perfectly and I still can't make or receive calls when hd voice is enabled, and of course at&t CS is no help. I can put my SIM in my iPhone 6s and make and receive HD voice calls just fine so I'm not sure what's going on.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Elpoep:
I have a SM-G955U with baseband G955uSQu1aqde -- it's an AT&T phone.

I want to unlock it for use with T-Mobile.

Which file set do i use?

this one? -- Because there is no UMS in this version? When I attempt to flash it it fails.

"UPDATE:

FULLY UNLOCKED USA VERSION XAA

https://drive.google.com/file/d/0B7r...ew?usp=sharing

First boot is long so just wait."
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] fademaydarkness:
Don`t flash any other Firmware before you unlocked your device in AT&T firmware. Request an unlock for your device in AT&T. If it`s paid, You will get the unlock code from at&t. I did the same mistake lol. I flashed Sprint Firmware before unlocking my AT&T G955U. Now I am stuck on Service provider SW ver XAA/XAA/ATT which disables the Unlock code option. People say they can restore back to ATT/ATT/ATT but for some no luck. I still can`t change my device, i can flash it but can`t change sw version. I have unlock code but can`t use it. I have to wait for root. So, why take the risk? Just ask for unlock code before you flash any other firmware.

Mine was also AQDE lol.

You can`t directly flash Unlockded XAA even if you modified ODIN.

Here is what worked for me.

1. Boot into Download Mode. (Notice on top it says "CARRIER ATT")

2. Flash only the Bootloader(BL) of G955W(Canadian firmware) in odin.Dont tick mark "Auto reboot" and "f.reset time" Try both modified and normal odin. Whichever works for you.

3. Boot into Download mode again. Now at top you`ll see "Carrier ATT" will not show.

4. Now flash any firmware you want like XAA unlocked US Firmware. I used sprint btw

EDIT AGAIN: never mind you already flashed it
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Elpoep:
So once I flashed it I'm out of options? My service provider SW ver is still ATT/ATT/ATT!

So I guess I can get the unlock code from att?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] fademaydarkness:
Yes , if its still ATT/ATT/ATT. Just put other carrier sim card and it will ask you for unlock code but am still now sure, if you will be asked the unlock code option in another firmware but it has not been changed(sw ver), you are good. :good:

You can flash back ATT firmware and put another sim card & use unlock code which is provided by att.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] monkey39:
You should be able to go back to AT&T stock following this guide: https://xdaforums.com/galaxy-s8+/how-to/snap-guide-flashing-standard-fw-carrier-t3627255
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] astaccz:
I have a ATT Galaxy S8 plus. I was able to flash back and forth from the G955U1 Odin firmware and the April ATT G955U Odin firmware. With no issues. Flashed right in Odin no special tricks. When I flashed the ATT software, it goes back to ATT/ATT/ATT as expected. When flashing the G955u1 firmware, it gets rid of everything ATT. The G955u1 firmware is way smoother and battery life is amazing. Even though I'm missing the volte and wifi calling, I'll take the smoothness and battery life over it. I've took my phone off charger yesterday morning and haven't plugged it in since.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] JeffATL:
I have T-Mobile s8/s8+ unlocked. If I want to flash the AT&T official rom instead of this one are the instructions generally the same? Was trying to find a thread with instructions. I have BK Package Disabler paid so I get use that to freeze bloat.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] killerocker:
Hey, can you give a step by step thing for what you did? I know there's a bunch but I'm pretty confused with all the variation in instructions. You're getting the battery life I'd love to have so I figured I'd follow what you'd done haha
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] dtomlin:
Have there been any updates to the U1 firmware?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] jason1332:
Not since 6/12/17.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] kakavl2010:
I'm waiting for July update come to my S8+ G955U1 ...

Does any different between CSC ATT and XAA on G955U1 rom?

I'm running XAA CSC :3
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] blkghost22:
Sent you a pm
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] malebornin69:
Thanks

I just wanted to say thank you to BigHussle for posting the unlocked firmware......I use AT&T everything works as advertised and updates as advertised......There is a huge difference between stock AT&T and the NO BLOAT, performance and battery....once again BIG THANKS, BigHussle.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] dogredwing1:
After flashing the XAA firmware I can't get text to send but I can receive them?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] jason1332:
QG2 dropping now. Should be on updato within the next 2 days.

Source: http://www.droid-life.com/2017/07/28/us-unlocked-galaxy-s8-update/

Edit: it's up. http://updato.com/firmware-archive-select-model?q=SM-G955U1&rpp=15&order=date&dir=desc&exact=1
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] johnwayne27:
Perfectly smooth!
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] mravish:
Hello Guys! I have a question do I need to be sim-unlock to install this version of Android with the T-Mobile firmware? I am on stock Android with Att?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] johnwayne27:
Yes you need to be sim unlocked
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] BigHussle:
Thanks for taking the time out to say thanks!!! Its people like you that encourage me to study more into this Android thing and figure out what all it can do
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] taifuller:
I thought I was going crazy about 10 minutes ago as I checked my battery life on my phone. I flashed factory firmware and ran it for a few days then put the at&t firmware on again about a day or so ago. The at&t image does chew through a bit more battery than the factory firmware. I was debating if I was losing my mind until I read your post.

Thanks
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] malebornin69:
No you are completely sane...lol

---------- Post added at 11:22 AM ---------- Previous post was at 11:21 AM ----------

You're welcome
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nofearpi:
updated from build number ending AQDE

Is it safe to go to this version from build number AQDE.

thanks in advance
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Shuthefrontdoor:
Do you have the caller ID spam feature?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] nate0:
I never checked. I have since flashed back to the AT&T rom to sim unlock it.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] malebornin69:
I have it, once I downloaded the app from the play store .... its att call protect. One i installed it, it works
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] lsukev:
Alright I need a little help after fighting this thing for hours. I wiped my phone. Booted into download mode and selected the ap bl cp and csc for the 955U1 firmware. The phone booted up afterwards and was able to get everything working fine. There was no option for enhanced lte services so I found through here that flashing the at&t CSC file would fix that. So I did so and now wifi calling and advanced messaging work but I cannot make a phone call unless I disable enhanced lte services. My phone is showing at/att/att.

At this point, I don't mind starting over to achieve enhanced lte. Could someone please layout the steps that I need to do for this to work correctly? Tia
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] darthmalus:
i had the same issue, so i just flashed mine back to stock. There may be some other settings that it needs to be complete that are probably not in the att CSC file. Instead of chasing the proverbial ghost that is " Root " maybe the devs can try to find a way to enable these features on the unbranded firmware.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] jawonder:
Did this Firmware get the update to use Google's Daydream ?.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] santet:
I need some help.

I have an S8+ G955U recently purchased which is SIM (carrier) unlocked and successfully used abroad with other providers.

The SW version says XAS/XAS/SPR.

I do not know my current CSC version and my carrier says SPR in download mode.

I am currently on firmware G955USQU1AQFJ and have no sprint branding at all apart from the sprint omadm notification which keeps popping up.

Dont care about wifi calling or volte or any of the carrier specific stuff since i mostly use my phone abroad.

I want to flash a fully unlocked version of firmware, preferably the international variant which will give me access to quick samsung OTA updates.

I am not interested in rooting the device now, since it serves my purpose just fine.

I have downloaded the USA XAA version from Updato, which i believe is the same one here.

Will flashing this without the userdata give me what i want.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] mitrjoshi:
volte

VOLET works with home CSC???
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Tikerz:
I want to share my experience with flashing the XAA unlocked firmware while still keeping all the AT&T goodies.

Started out with a stock ATT S8+. Flashed the latest XAA AQG2 (AP, BL, CP, CSC) with princecomsy ODIN. Booted up and set it up. Then flashed ONLY the HOME_CSC from ATT AQF7 firmware. Booted up. Now, I have all the ATT status bar icons, IMS shows registered, WiFi Calling, VoLTE. SMS, MMS, and calls all work. Hooray!
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] blkghost22:
Is the enhanced lte servi e turned on?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Tikerz:
Yes.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] blkghost22:
Can you share your apn setting? Mine is not sticking and need to reset all the time.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Tikerz:
It's just the default ATT Nxtgenphone APN.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] blkghost22:
Dang

For myself my calls keep disconnecting ic my signal is on LTE. When its just 4g then everything works.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Tikerz:
Did you flash yours the same way I did mine?
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] blkghost22:
I think i did i flashed the BL AP CP CSC with prince's odin after setting up i flash the att home csc with the original odin.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] Tikerz:
Oh, I flashed the ATT home csc with prince's odin. Don't know that would make a difference.
[AT&T Samsung Galaxy S8+ Guides, News, & Discussion] blkghost22:
Will try that, but not sure if i did that in the begining....

Its my 3rd time flashing...fml