yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 Edge Questions and Answers] andiling:
Seems like factory reset is working for you... maybe storage damaged if this doesn't help.
[Samsung Galaxy S8+ Questions & Answers] GalaxyS8Plus:
Friends,

My new Samsung Galaxy S8 Plus is just a week old now but getting severe Echo on the other end when made or received calls!!! I am with EE in the UK.

When someone calls me or I get call from someone party at the other end is complaining that he/she get their voice echo'd badly, but at the Galaxy end no issues perfect sound. I tried calls with speaker phone ON/headset connected, both cases no echo at the other end!!! Only other reference to this I have seen is below entry in XDA Dev forum, no solution yet!!!

https://xdaforums.com/galaxy-s8/help/halaxy-s8-plus-echo-making-phone-calls-t3605689

As I said when headset or speaker phone ON on Galaxy, no echo at the other end. Also i could see when Speaker phone is switched off Echo gradually goes down though first 30 sec after speaker off echo is maximum.

I removed cases and screen protector and tried same issue. Also tried with Voice over Wifi Off - No difference. BTW I am in an area with lower signal strength. But @ Galaxy end everything is perfect, No issue at all!!!

Any suggestions..?? Not keen to return phone as it might take weeks to get a replacement and again had to copy all data etc.

Thanks

P***d of S8+ User
[Samsung Galaxy S8+ Questions & Answers] themissionimpossible:
There is a dedicated S8+ forum section:

https://xdaforums.com/galaxy-s8+
[Samsung Galaxy S8 Guides, News, & Discussion] juvemex:
UPDATE: thanks to everyone here the best way was found to switch carriers thanks to mweinbach for your step by step tut works perfect now lets get root!!

https://xdaforums.com/showpost.php?p=72333570&postcount=3

How to change carrier:

1. Download Factory Binary, EngBoot, and the G950W firmware. (i dont think engboot is needed i did it without eng boot and works)

2. Turn off phone

3. Hold down on Bixby button + power + volume down

4. open Odin v3.12.7

5. add the Factory Binary to the AP section of Odin.

6. Plug your phone into your computer (NEEDS TO BE WINDOWS) with Odin open

7. Make sure your device is connected and recognized by Odin.

8. Click start.

9. One the phone reboots run the ADB command, adb reboot bootloader

10. Open modded Odin and flash the EngBoot

11. Click start

12. Once the phone reboots type the command adb reboot bootloader

13. Put the HOME_CSC of the G950W firmware into the CSC part of Odin (unmodded)

14. Click start

15. Open IME setting on Factory Binary

16. Type in *#243203855#

17. Select XAC

18. Click install

19. Wait for phone to reboot

20. Once it does open terminal and type in adb shell

21. Then type in echo "XXX" > /efs/imei/mps_code.dat

22. Type in exit into adb shell

23. Type in adb reboot bootloader

24. Flash the G950U firmware of your choosing without Userdata. Also make sure to flash the non-home CSC

25. Enjoy your new carrier!

CSC Values (replace on of these with the "XXX" in step 21):

BST Boost

VZW Verizon

ATT ATT

USC US Cellular

ACG C Spire

TMK MetroPCS

VMU Virgin Mobile

TFN Tracfone

XAS Sprint

TMB T-Mobile

XAA Unlocked US

SPR Sprint

CCT Xfinity Mobile

Don't entirely know which ones these are:

GCF World Wide

ACG Some Mid West Carriers

LRA A bunch, cant figure it out

its been tested on vzw/sprint/att/tmobile s8 and s8+ with original firmware.. if you flashed the canadian firmware it will not work

1. flash eng boot

2. adb shell

echo "TMB" > /efs/imei/mps_code.dat

change TMB to your desired carrier

3. restart phone

4. flash the new carrier firmware :fingers-crossed:

eng boots:

https://drive.google.com/drive/folders/0B4NKFp9A7CsoYmZtakVwVm91QWs
[Samsung Galaxy S8 Guides, News, & Discussion] dave357:
Awesome

I will try this first thing in the am bro. Great Work sir. Can't wait to do it!

Here I come Att firmware bye bye Metro firm.......lol

Thank You L.:good:

---------- Post added at 02:19 AM ---------- Previous post was at 02:18 AM ----------

This is for the S8 & S8+ by the way folks.

G950U and G955U
[Samsung Galaxy S8 Guides, News, & Discussion] unitz0mbie:
What if I want to flash the Canadian brandless firmware, which I did already but without inputting the code
[Samsung Galaxy S8 Guides, News, & Discussion] wchriseg:
BST Boost

VSW Verizon

ATT ATT

USC USCellular

ACG CSpire

TMK MetroPCS

VMU Virgin Mobile

TFN Tracfone

XAS Sprint

TMB T-Mobile
[Samsung Galaxy S8 Guides, News, & Discussion] jellomonster54994:
Has anyone tried this??
[Samsung Galaxy S8 Guides, News, & Discussion] Quickvic30:
Was wondering the same, might try this evening but the phone is running great on the XAC firmware so not sure if I wanna mess with it.
[Samsung Galaxy S8 Guides, News, & Discussion] juvemex:
XAC firmware runs perfect but this will help people that want to unlock sprint to tmobile att metro cricket ect and get everything working right.. and it works i done many s8+ sprint to tmobile and att
[Samsung Galaxy S8 Guides, News, & Discussion] Rushstrike:
could you show me the link to this patch odin so i can flash eng boot? tried searching the forum but havne't been successful.
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
Doesn't work. Says permission denied. It would work if we had root permission on the EngBoot. If we get one, carrier switching is easy.
[Samsung Galaxy S8 Guides, News, & Discussion] Rushstrike:
how do you get to ADB after you flash the eng_boot ? my phone can't get pass the carrier logo after i flashed eng boot

UPDATE: Be patient after flashing eng_boot it will eventually boot ;)
[Samsung Galaxy S8 Guides, News, & Discussion] juvemex:
it works..... or maybe i got lucky on 27 sprint s8 plus's i have done :laugh:
[Samsung Galaxy S8 Guides, News, & Discussion] smgrimes:
Which eng boot are you using?
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
can you provide me with the S8 version of the EngBoot you have used?
[Samsung Galaxy S8 Guides, News, & Discussion] Rushstrike:
yup would be great if we can get this. All the eng boot i have tried provide read access only and no write access.
[Samsung Galaxy S8 Guides, News, & Discussion] ty8722:
I find it funny that the "op" has 3 post and 6 likes. Obviously, this is a troll... Post ALL the files to support your claim or don't post at all.
[Samsung Galaxy S8 Guides, News, & Discussion] jellomonster54994:
I have the eng boot to Sprint one s8 and s8+
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
engboot is universal by CPU version, or at least in the past it has been.
[Samsung Galaxy S8 Guides, News, & Discussion] jellomonster54994:
Soooo does that mean you want it or not lol
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
i would like it. Can you please provide it?
[Samsung Galaxy S8 Guides, News, & Discussion] jellomonster54994:
i am about to attempt it i downloaded stock firmware to flash just incase it goes wrong
[Samsung Galaxy S8 Guides, News, & Discussion] Quickvic30:
Someone should compile all the downloads from this thread and we should make a sticky with all the firmware and combination/eng boot files. I'll help out in any way possible.

Now that we know how to return our phone to fully stock we can mess with them even more and figure out even more hidden stuff and maybe even we can do the unthinkable and gain you know what access lol.
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
Can you flash AQC9 over AQDE?
[Samsung Galaxy S8 Guides, News, & Discussion] gqukyo:
No, didn't try. I'll wait a bit longer. I'm happy with my unlocked LTE bands which was the main reason I flashed to the XAC firmware. The only reason I had to flash back the Vzw firmware was so Samsung Pay would work as it didn't work for me when I was only on the XAC firmware. I was on XAA/VZW/VZW for a bit and now I'm on XAA/XAA/VZW. Going to keep it that way for now as I don't see any benefits for switching all the way to Tmo if I'm not a proper Tmo customer. I'm using their service through MintSim.
[Samsung Galaxy S8 Guides, News, & Discussion] twister082179:
https://xdaforums.com/showpost.php?p=72333570&postcount=3

the guide in that forum finally made me change carrier from Verizon to T-Mobile. My phone now is TMB/TMB/VZW, weird not full TMB! But at least it is now fully swappable.
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
the last one is built into the phone hardware, and until root we dont know how to rewrite it.
[Samsung Galaxy S8 Guides, News, & Discussion] twister082179:
OK, thanks!
[Samsung Galaxy S8 Guides, News, & Discussion] gqukyo:
Samsung Pay work for you?
[Samsung Galaxy S8 Guides, News, & Discussion] twister082179:
yes
[Samsung Galaxy S8 Guides, News, & Discussion] gqukyo:
Wonder if carrier OTA updates would work now... cuz my XAA/XAA/VZW won't work with Verizon's update app on Windows which is not a good sign of getting an OTA update either. We'll all find out whenever they release the new update. Probably would have to flash manually.
[Samsung Galaxy S8 Guides, News, & Discussion] KevnRobles:
Sorry if im not understand this but there is a lot of info. If I go to xaa/xaa/att and then to xaa/att/att I should retain volte and video calling but be able to uninstall bloat?
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
One of the other tutorials says you can't go backwards... Is that true?
[Samsung Galaxy S8 Guides, News, & Discussion] Quickvic30:
No that is not true, you can down grade as long as the bootloader number is the same, so for instance BL number is 1 right now. when they update it to 2 then we will not be able to downgrade back to BL 1 firmware. BL number is always 5th from the last number. example G955USQU(1)AQDE
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
Thanks! Look forward to running at&t firmware on my Cricket S8! :)
[Samsung Galaxy S8 Guides, News, & Discussion] craya:
Yeah, when I got my phone into XAA/VZW/VZW, otas no longer work. I had to update by using odin and flashing the csc file that doesn't wipe the device.
[Samsung Galaxy S8 Guides, News, & Discussion] the_OZONE:
Does this mean I can switch my T-Mobile S8+ to ATT and get WiFi calling and Volte?
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
You should be able to. Follow these instruction on 3rd post but switch all the files with the S8+. https://xdaforums.com/tmobile-galaxy-s8/how-to/eng-boot-root-t3608353
[Samsung Galaxy S8 Guides, News, & Discussion] Maliciousintent279:
Where do you get the factory binary for the s8+? is it the same as the eng boot or no?
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
Engboot is different. It is in OP. I dont know where the S8+ factory binary is. You can go look around google for the combination firmware.
[Samsung Galaxy S8 Guides, News, & Discussion] Maliciousintent279:
Yeah i realized that after the fact but okay so it should work the same just replacing the files with the ones needed for the s8+? Trying to get the unlocked firm but with wifi calling enabled for att
[Samsung Galaxy S8 Guides, News, & Discussion] Quickvic30:
I just posted the s8+ binary/combination file a page back lol

---------- Post added at 06:13 PM ---------- Previous post was at 06:07 PM ----------

https://www.androidfilehost.com/?fid=745425885120734648
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
Can anyone point me in the direction of ATT firmware? Updato seems to have all but ATT
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
any frimware should work because of the way multi-csc works. I dont know if we have a copy of it from the samsung servers yet.

---------- Post added at 05:12 PM ---------- Previous post was at 05:11 PM ----------

do you have the ADQ8 factory binary for the S8 also. I saw it was updated to that.
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
so... when it says "flash new carrier firmware" you don't actually have to flash the new carriers firmware? You can flash any firmware and all carrier specific features still work (VoLTE, Wifi Calling, etc)?
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
Yes. That is correct.
[Samsung Galaxy S8 Guides, News, & Discussion] the_OZONE:
So let me get this right. I can get rid of all the bloatware and at the same time have WiFi calling and Volte for T-Mobile correct? What steps would I take to achieve that? Sorry if I'm a bit clueless, there's just so much going on in this thread and I want to be sure I do it right.
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
YES! I recommend the G950U1 firmware, but if you look in the T-Mobile forum for the thread called EngBoot + Root I have instructions there. I will post a link to the SM-G950U1 firmware there also. Thats the one I am using.
[Samsung Galaxy S8 Guides, News, & Discussion] the_OZONE:
Okay awesome! I have a G955U, do you mind posting the same one for that?
[Samsung Galaxy S8 Guides, News, & Discussion] guaneet:
https://xdaforums.com/galaxy-s8/help/usa-bloatless-unlocked-firmware-g955u1-t3612690

---------- Post added at 04:11 AM ---------- Previous post was at 04:11 AM ----------

I'd like that firmware!! I can't find it online
[Samsung Galaxy S8 Guides, News, & Discussion] fibrizo:
I downloaded it from rom up and posted it.

https://xdaforums.com/showpost.php?p=72433451&postcount=1385

I followed mwienbach's thread to flash it and it works great.
[Samsung Galaxy S8 Guides, News, & Discussion] the_OZONE:
Would I need the G955U1 T-mobile firmware or G955U1 XAA firmware? Updato.com shows them as separate but maybe they are the same thing?

I'm a bit confused as to what it should end up as (XXX/XXX/XXX)
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
doesn't matter. It will change. There is no XXX/XXX/XXX. It is just whatever your sim card is.
[Samsung Galaxy S8 Guides, News, & Discussion] T33H00:
deleted
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
Anyone know if volte works with att on xaa?
[Samsung Galaxy S8 Guides, News, & Discussion] elliwigy:
i think op needs to update lol.. i see same questions asked over n over again.. i dont have att but same method on vzw device and hd voice works no oroblems

---------- Post added at 11:15 AM ---------- Previous post was at 11:14 AM ----------

otmr maybe a Q&A thread can be created for any questions or troubleshooting??
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
Att didn't normally support hd voice on any non-att phones... That's why I ask. Will try it when I get home tonight and post results.
[Samsung Galaxy S8 Guides, News, & Discussion] elliwigy:
i understand.. im on vzw so i cant confirm.. can only say from my experience on vzw
[Samsung Galaxy S8 Guides, News, & Discussion] Maliciousintent279:
so far doesnt look like it. i flashed the g955u1 on my att plus theres no wifi calling. havent gotten any update to download carrier specific stuff.
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
If you use the G950U1 firmware it does.
[Samsung Galaxy S8 Guides, News, & Discussion] Maliciousintent279:
what about with the g955u1? doesnt seem to work.
[Samsung Galaxy S8 Guides, News, & Discussion] Nicky Wong:
This process works on a TracFone (TFN) branded S8 and S8 Plus!

I selected T-Mobile and everything works. The surprise (as a bonus) is that the phone is also unlocked for AT&T!

Thank you!!!
[Samsung Galaxy S8 Guides, News, & Discussion] smgrimes:
I also had success moving a VZW 955u to TMB. Finding the 955u eng boot took a bit, but once to there it was as simple as following the steps!
[Samsung Galaxy S8 Guides, News, & Discussion] unitz0mbie:
I got my phone unlocked from Samsung and I'm using the g955u1 firmware, essentially it's the same as xaa? Without all the steps just flashed
[Samsung Galaxy S8 Guides, News, & Discussion] bricky23:
So it was not carrier unlocked before? But flashing this process, unlocked it?
[Samsung Galaxy S8 Guides, News, & Discussion] :
important question

Can this method remove my Videotron Simlock? Please help. Thanks.
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
should. switch your carrier to XAA.
[Samsung Galaxy S8 Guides, News, & Discussion] gqukyo:
New recent TracFone's should already be unlocked already... not 100% sure though... but in any case, they provide free unlocking anyways because of their agreement w/ the FCC.
[Samsung Galaxy S8 Guides, News, & Discussion] XxCyberHackerxX:
Where can I find the Factory Binary and the G950W firmware. Also how do i install the eng boot?
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
What determines first and second code in the XAA/XAA/XAA string? I'm trying to get to XAA/ATT/(xxx)
[Samsung Galaxy S8 Guides, News, & Discussion] unitz0mbie:
How do I check what xaa code I have?
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
Settings > About

---------- Post added at 08:23 PM ---------- Previous post was at 08:22 PM ----------

Settings > About > Service Provider SW Ver
[Samsung Galaxy S8 Guides, News, & Discussion] Quickvic30:
I successfully flashed to pure XAA, upon boot it prompts for a reboot to load your carriers sim settings and reboots into a sim learning mode. In settings/about its just like the XAC was but it's now XAA, no xxx/xxx/xxx anymore. It also changed my model # to G955U1.....

View attachment 4163649
[Samsung Galaxy S8 Guides, News, & Discussion] elliwigy:
howd u flash it
[Samsung Galaxy S8 Guides, News, & Discussion] Quickvic30:
Combination file

Enabled oem unlocking

ADB

echo XAA > /efs/imei/mps_code.dat

Reboot to Bootloader/download mode and flash XAA firmware BL/AP/CP/CSC not home CSC.
[Samsung Galaxy S8 Guides, News, & Discussion] raduque:
OK, so I plan on doing this next week (my return period is up Friday the 2nd) to get a US Unlocked S8.

Should I need to revert to the Verizon FW, I would do:

echo "VZW" > /efs/imei/mps_code.dat

and then reflash ANY full firmware? Or would it need to be the Verizon FW?
[Samsung Galaxy S8 Guides, News, & Discussion] gqukyo:
So what does it say for carrier when in download mode? Does Samsung pay work?
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
Carrier is XAA, unlocked. And Samsung Pay works.

---------- Post added at 11:02 PM ---------- Previous post was at 11:02 PM ----------

Yes. With engboot insalled.
[Samsung Galaxy S8 Guides, News, & Discussion] raduque:
OK, thanks.

One more question. I have a VZW device (obviously). If I flash the 950U1 FW I found in your "ENG Boot + Root" thread over in TMO, with no modifications, will I still end up with a branded VZW device and missing features?

My goal is a device that behaves exactly the same as if I bought a US Unlocked model instead of the Verizon one.
[Samsung Galaxy S8 Guides, News, & Discussion] elliwigy:
i tried your steps and ops with no luck.. would just get permission denied..

however, just using comsey odin and flashing the 955U1 XAA rom put me completely on the XAA.. model shows as 955U1 and no more SW version at all..

upon first boot it detected my sim and rebooted and everything is great and converted!

So basically, you dont need any of those steps at all if you want to go to the G955U1 ROM simply flash it in ODIN
[Samsung Galaxy S8 Guides, News, & Discussion] unitz0mbie:
Yea I don't see it I flashed g955u1
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
It doesn't... Just tried with the U1 from OP, as soon as you make a phone call it drops to H+
[Samsung Galaxy S8 Guides, News, & Discussion] raduque:
What carrier are you on? What carrier-specific features are working?
[Samsung Galaxy S8 Guides, News, & Discussion] fibrizo:
BTW I noticed 1 odd issue with the G950u1 rom. You can't install oculus stuff. It continuously errors out for me with "Network error" issues. Anyone else have this?
[Samsung Galaxy S8 Guides, News, & Discussion] sillyphillie:
I have a quick question before I do this....

I am on XAA/XAA/VZW with T-Mobile SIM. This device is a Verizon model but I seem to have all T-Mobile bands and wifi calling.

What am I going to get by flashing to G950U1? Will it finally not be a a "Verizon" model? What will the bootloader show as the CSC, VZW or XAC?

I am downloading all files and will flash today but I just wanted to check if it's worth it or I am just chasing the same dragon as earlier.
[Samsung Galaxy S8 Guides, News, & Discussion] moises93:
One of the main reasons I tried this was too see if I could get the carrier restrictions of hotspotting removed, my service provider (Cricket) charges $10 monthly to enable this feature! No way was I going to pay! Well it works! Now I have a fully debloated rom. I don't even get the splash screen from my SP any more. I used the new G950US....XAA floating around here instead of the G950U1 firmware. Didn't give me a single problem. Now my device is XAA,XAA,AIO (Cricket). Everything is working fine.
[Samsung Galaxy S8 Guides, News, & Discussion] thecrunked:
I want to thank all the people who contributed to get this method fleshed out, great work all. I do have a question though before i flash my device.

I have an AT&T S8+ that I haven't done any type of flashing with yet.

#1) Do all the at&t features like volte, wifi calling, etc work on the unlocked US firmware

#2) Is there a way to flash back to the full stock at&t carrier bloated firmware in case I wanted to sell the phone or for warranty claim in the future
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
deleted

---------- Post added at 08:48 AM ---------- Previous post was at 08:45 AM ----------

[/COLOR]

ok. I dont know, mine has been fine.
[Samsung Galaxy S8 Guides, News, & Discussion] sillyphillie:
Do you have a link to this file? This is the first I've heard of it.
[Samsung Galaxy S8 Guides, News, & Discussion] inneyeseakay:
Are you on at&t? They are kinda Nazi about volte... that may be the difference
[Samsung Galaxy S8 Guides, News, & Discussion] Nicky Wong:
The phone only accepted TracFone SIMs and Verizon SIMs when it was purchased. Even though TracFone owns Simple Mobile, Net10, etc. none of those MVNO SIMs would work. I even called TracFone pleading my case to have unlock the phone but I would have to get TracFone service and use it for 1 year before they would unlock it for free.

In any event, I wanted to use it with T-Mobile, and after the prescribed method in this thread, I was able to use my T-Mobile SIM card and full service. Out of curiosity, I inserted an active AT&T SIM card and the phone also accepted it.
[Samsung Galaxy S8 Guides, News, & Discussion] mweinbach:
I am on T-Mobile
[Samsung Galaxy S8 Guides, News, & Discussion] moises93:
https://www.androidfilehost.com/?fid=817550096634772341

Was just uploaded yesterday.
[Samsung Galaxy S8 Guides, News, & Discussion] hands0m3:
Just a quick question do I flash the files all at once or in a special order? I have Odin and I habe the G955u1 file
[Samsung Galaxy S8 Guides, News, & Discussion] smgrimes:
Well this makes it a lot easier! No bloat and all carrier features without engboot and the rest will make my life easier (as I have a tmb, VZW, att service). I'll try the 71st firmware this eve.

Just standard Odin and flash?
[Samsung Galaxy S8 Guides, News, & Discussion] gqukyo:
Please report back with your results cuz I want to try the same. Lol
[Samsung Galaxy S8 Guides, News, & Discussion] moises93:
Yup that's it, if not I used modded ODIN. Can't remember since I was going back and forth lol
[Samsung Galaxy S8 Guides, News, & Discussion] awayy:
This work PERFECT!
[Samsung Galaxy S8 Guides, News, & Discussion] sillyphillie:
I flashed the 950U1 firmware to my Verizon S8. This phone was originally flashed with the Canadian firmware and then flashed with the T-Mobile firmware leaving my phone as XAA/XAA/VZW with a CSC of VZW.

I can say after flashing the 950U1 firmware the CSC has successfully changed to TMobile after an update on initial bootup! OMG FINALLY AWAY FROM VERIZON! This phone is a fully unlocked and has ALL T-Mobile services and bands. Wifi Calling and all.

Thank you all!!

BTW.. I just flashed the 4 files in the U1 firmware. No need for ENGBOOT.