yashsingh1/xdaforums huggingface dataset:
[Xperia Z3 Compact Q&A, Help & Troubleshooting] Robyx91:
Hi, I'm in the exact same situation, I have Lineage OS 7.1 installed and I can't go back to any custom ROM based on Android 6.0 stock, all I get is always a bootloop. The only other ROM I can install is Sony stock via Flashtool. I really don't know what the problem is, please let me know if you manage to solve this weird problem.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] nailyk:
Install old twrp, wipe /apps_log.

Or use emma to get a clean device again.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] Robyx91:
I solved the issue installing stock Android 6.0 with Flashtool, twrp 3.0.2 and then flashing ROM. :good:
[Samsung Galaxy S8 Guides, News, & Discussion] bricky23:
Very nice! Thank you. Also AIO is Cricket CSC code.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Oh, thanks.
[Samsung Galaxy S8 Guides, News, & Discussion] thecrunked:
Thanks for the guide. Question, im using an att s8+,I flashed the unlocked firmware. If I wanted to switch back to att carrier bloat firmware would I still use the Canadian firmware or substitute the att bloat firmware?
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
I just edited the guide. Check the introduction.

I edited it again.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Oh wait, you have an S8+. Check my future guide in a few hours for that phone. (The downloads are a bit different).
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Fair warning to everyone: Do NOT use this guide unless you have a US Snapdragon S8.
[Samsung Galaxy S8 Guides, News, & Discussion] tksams:
Great Guide - Everything was going as planned until I got to the USERDATA step....The Verizon Firmware PAckage I got from Updato didn't have the USERDATA file.

Any Idea where I should get it?
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
​

Could I have a direct link to where you got your Firmware? Where in Updato?
[Samsung Galaxy S8 Guides, News, & Discussion] fabioplata:
Will be good if anyone put differences between carrier firmware, which one is better?
[Samsung Galaxy S8 Guides, News, & Discussion] tksams:
I got it from here: http://updato.com/firmware-archive-select-model?record=FC3AB0A6516B11E7963AFA163EE8F90B
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
I just downloaded it. It's in there.
[Samsung Galaxy S8 Guides, News, & Discussion] fabioplata:
Will be Nice a Video guide.
[Samsung Galaxy S8 Guides, News, & Discussion] tksams:
Very odd.

Is it a hidden file or something? I suppose my download could have been corrupted.

I'll assume it's a problem on my end. Thanks again for the Guide!
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
The guide I wrote should be mostly coherent. A video guide might be time consuming for me to make. I have to write the S8+ tutorial before I decide if I want to make one.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
No problem. You should probably re-download the whole firmware zip. It's not a hidden file.
[Samsung Galaxy S8 Guides, News, & Discussion] tksams:
On my second download attempt the file size is now significantly larger....for some reason they didn't give me all the files the first time!
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Nice! Now you can continue. The "USERDATA" file is only for carrier variants of the S8. You put it in the "UMS" box in Odin, as stated in the guide.
[Samsung Galaxy S8 Guides, News, & Discussion] fabioplata:
Thanks..
[Samsung Galaxy S8 Guides, News, & Discussion] DevalB:
Amazing guide! the unlocked firmware (G950U1) works amazingly well, but does not offer some carrier-specific features (no WIFI Calling with Verizon SIM, etc.) but does unlock all LTE bands for the respective carriers.
[Samsung Galaxy S8 Guides, News, & Discussion] leyvatron:
What is being used to back up your phone? Are people just backing up certain files or is there a program that can create a .tar file to flash in odin for a full restore?
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
You can use ADB to do a full backup. You could also try using Smart Switch to backup your data, but it may interfere with Odin.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Hey guys, my AT&T firmware Dropbox link has been temporarily suspended due to lots of traffic. I'm going to try to find an alternative cloud hosting provider.
[Samsung Galaxy S8 Guides, News, & Discussion] Cauldron:
I did try this method as best as possible via Odin to no avail. So I decided to try flashing the AT&T stock firmware on my Unlocked S8 purchased through Samsung. Fully loaded with bloat to the teeth still no VoLTE or WiFi Calling. I recalled reading once upon a time that having a senior tech from AT&T activate over the the phone was achievable if they have a AT&T IMEI number to bind to my phone number.

So I went to the local AT&T Corporate store (not the authorized dealers), found a Demo S8, snapped a photo of the demos IMEI number which I used later in a phone conversation with a Senior AT&T tech to fully activate the VoLTE & Wifi Calling feature. VIOLA! (not happy about the bloat, but whatevs, i'll ide/disable that shiz)
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Wonder why there's so many different stories on this. Other people said they flashed tmobile firmware and got volte working on att, yet it didn't work for you with the att firmware. Wonder what the differences are.
[Samsung Galaxy S8 Guides, News, & Discussion] Cauldron:
VOLTE, video calling and wifi calling ARE working on the AT&T firmware flashed on unlocked S8, but ONLY after the tech activited on his side.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Understand, but others have it working without so trying to figure out what's the differrence.
[Samsung Galaxy S8 Guides, News, & Discussion] Cauldron:
I'd like to know as well.
[Samsung Galaxy S8 Guides, News, & Discussion] Charkatak:
I have read 1st page and saw 3 different methods for flashing the phone. What is the Standard Flashing? < - I used that method when I was flashing S3, S4 and S5.

Here is my situation: I have US Unlocked S8 on T-Mobile. If I would need to flash the phone in the future with T-Mobile firmware, will method under Standard Flashing work for me or I need the one that says: Carrier Switching?
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Standard flashing.
[Samsung Galaxy S8 Guides, News, & Discussion] Charkatak:
Thanks! So I found the below firmware for G950U1 and think that this is the one I need + has the same model # as my phone. Please correct me, if I need to use G950U instead of U1

Country / RegionUSA (T-Mobile)

PDA: G950U1UEU1AQE3

Product Code: TMB

CSC: G950U1OYM1AQE3

Phone: G950U1UEU1AQE3
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
If you want to go to standard firmware, you're going to need "SM-G950U" firmware, not "SM-G950U1" firmware. Follow the "Flashing Standard Firmware" section.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Hey, everyone! I got Developer Access to Android File Host, so now I can upload the AT&T firmware and wouldn't have to worry about it being suspended for attracting lots of traffic. I also see that a lot of you are asking me to make the guide easier to understand, so I will do that soon.
[Samsung Galaxy S8 Guides, News, & Discussion] Charkatak:
Downloading SM-G950U now. Thanks.

1) Any ideas what below firmware contains?

Galaxy S8	SM-G950U1	7.0	June 12, 17	USA (T-Mobile) (TMB)	G950U1UEU1AQE3

2) If I would want to go back to stock US firmware of SM-G950U1, will I need USA(USC) or USA(XAA)?
[Samsung Galaxy S8 Guides, News, & Discussion] keithnet:
The AT&T Firmware you posted doesn't have HOME_CSC. Suggestions?

-Keith
[Samsung Galaxy S8 Guides, News, & Discussion] bricky23:
Flash userdata
[Samsung Galaxy S8 Guides, News, & Discussion] daniel4653:
Question since i searched and couldnt find anything. This will wipe data, right?

Example if i flash the unlocked firmware on my ATT S8.

Thanks
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Yes, I stated that in the introduction.
[Samsung Galaxy S8 Guides, News, & Discussion] keithnet:
I'm a bit confused. I should have quoted the full reply in my previous message. I'm trying to flash updated AT&T software on my phone and not lose any user data. Mike15678 suggested previously that if I flash with HOME_CSC, I wouldn't lose data. The updated AT&T rom that was released doesn't have HOME_CSC.

You're suggesting I use USERDATA_ATT in CSC or UMS? If I use it in UMS, what should I use in CSC to avoid data loss?

-Keith
[Samsung Galaxy S8 Guides, News, & Discussion] bricky23:
Oh no, I didn't know you were trying not to loose data. Can't help there.
[Samsung Galaxy S8 Guides, News, & Discussion] keithnet:
FYI: I just updated my phone with the latest TMobile release (G950USQU1AQFJ) and applied BL, AP, CP and Home_CSC. Worked great. I'm still on AT&T and lost no data or features (i.e. Wifi Calling).
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
I just updated the "Downloads" section with a link for AT&T S8 firmware! I'm now using Android File Host, instead of Dropbox.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
So I finally flashed my factory unlocked s8 with att firmware. It worked , sort of. Volte worked however wifi calling tried to work but said it wasn't authorized on my account. Any way to get this to work besides the one guy who gave att a fake imei??

Was there any consensus on how to add the volte without the bloatware?? Did it actually work by just flashing the one file??
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Try following [MENTION=712470]keithnet[/MENTION] 's method listed above.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Thank you for posting this. I'm starting to wonder, whether you could just use the "HOME_CSC" from the T-Mobile firmware and use the rest of the files from the AT&T firmware (a "BL", an "AP", and a "CP" file), so you can update. For updating in general, you never use the "USERDATA" file. I'll have to do more testing and mention this in the guide.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Do u have or did u ever have wifi calling with att legimately??
[Samsung Galaxy S8 Guides, News, & Discussion] keithnet:
I have Wi-Fi calling. I had to give AT&T my wife's s7 imei.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Oh, ok. Guess I'm out of luck then

I have 5 lines with att but think only 1 has wifi calling. I can't use same Imei number from the one that has it legitametly can i?

---------- Post added at 02:17 AM ---------- Previous post was at 02:00 AM ----------

He uses a different imei number . I think it would work fine with att firmware as well. Don't see the need for tmobile firmware.
[Samsung Galaxy S8 Guides, News, & Discussion] keithnet:
Yes. That's what I did. Make sure your S8 is off. I did an online chat and gave them the legit IMEI # for my wife's S7. Afterwards, I turned back on my S8 and wifi calling activated.

-Keith
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Do u think it matters that it's an iphone??

How come they don't recognize same imei number in the system?
[Samsung Galaxy S8 Guides, News, & Discussion] keithnet:
It shouldn't matter.

My understanding is they just use the IMEI to set up features. The SIM card is what matters for your #.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
All the us s8s are the same. Have all band's for gsm and cdma.
[Samsung Galaxy S8 Guides, News, & Discussion] kool_am:
cant use

Thanks Thor2j.

I put in my AT&T sim and it is not recognizing the sim. I called straight talk and they said this is a CDMA phone. any thoughts. thanks
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Change the CSC to "ATT" by following the "Carrier Switching" section. Then, flash the AT&T firmware by following the "Flashing Standard Firmware" section. AT&T firmware is in the "Downloads" section of the guide.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Do as Mike said(who knows 1000x more then me).

R u sure your phone is SIM unlocked??
[Samsung Galaxy S8 Guides, News, & Discussion] kool_am:
thnx

Thanks Mike and Thor.

it is sim unlocked. at least thats what straight talk people have told me. I can send a text while my AT&T sim is there but cant make a phone call !!!
[Samsung Galaxy S8 Guides, News, & Discussion] bricky23:
Mine is the same. It will work. Changing the csc enables the band's needed.
[Samsung Galaxy S8 Guides, News, & Discussion] kool_am:
thnx

I'll try this.

Thanks all
[Samsung Galaxy S8 Guides, News, & Discussion] Charkatak:
Will flashing my US Unlocked S8 with T-Mobile's firmware, sim lock the device or not? I do remember it was the case with some phones.
[Samsung Galaxy S8 Guides, News, & Discussion] bricky23:
No. Once it is unlocked, it stays unlocked.
[Samsung Galaxy S8 Guides, News, & Discussion] Charkatak:
Thanks!
[Samsung Galaxy S8 Guides, News, & Discussion] CasualObserver89:
I have the Galaxy S8 that was originally from T-Mobile and I downloaded all the software as noted on the first post. Then I followed the Carrier Switching steps and proceeded to the Flash Standard Firmware section. I ended up flashing the AT&T firmware and used the Canadian HOME_CSC. After setting up my phone, I don't have VoLTE or WiFi calling enabled on my newly flashed AT&T phone. Did I miss something or do I need to do something else?
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Standard flashing doesn't say anything about Canadian firmware.

I'm assuming your tmobile is SIM unlocked.

You should get volte and will have option to toggle wifi calling, however wifi calling will not work without you providing att with an imei number to a legit att phone with that feature.
[Samsung Galaxy S8 Guides, News, & Discussion] fademaydarkness:
No, it'll not. Go ahead do the flashing of your choice.
[Samsung Galaxy S8 Guides, News, & Discussion] CasualObserver89:
Sorry I think I may have been a little confusing. Step 23&24 of "Carrier Switching" says to use the Canadian Firmware for the HOME_CSC. But yes, I used that, and everything else under "Standard Flashing" (AP,CL, CP, UMS) I used the AT&T Firmware from the Download section. I can make calls, texts, and internet but calls drop from LTE to 4G as soon as I dial. Do you think maybe I should try to re-flash everything?

ETA: Yes, I am SIM unlocked.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Seems like an activation problem. It would be hard to ask AT&T to properly activate it, unless you provide a dummy IMEI number.
[Samsung Galaxy S8 Guides, News, & Discussion] CasualObserver89:
So if I could get an IMEI of a AT&T phone, I would just ask them to associate my current SIM with that IMEI and VoLTE and WiFi calling should work?
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
That seems to be the consenus.
[Samsung Galaxy S8 Guides, News, & Discussion] CasualObserver89:
Would an old S4 I have work or would it have to be a new model?
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
No, phone has to have wifi calling. I think first one was s6.

---------- Post added at 06:48 PM ---------- Previous post was at 06:02 PM ----------

I was close, s5
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
I believe it has to be an S8. But I'm not that sure, as I don't have AT&T and am only taking other people's words for it.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Not true, there is a guy on one of the other threads who gave his wife s7 that was already on his account. Worked perfect. I'm going to try an iphone tomorrow and see what happens.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
I flashed volte on my unlocked via ATT firmware, no problems.
[Samsung Galaxy S8 Guides, News, & Discussion] t12icky0:
I flashed the unlocked att firmware but there is no option to enable it in the settings. Which firmware did you use? I'm also on cricket wireless(ever tho it uses att towers).

Did you use this firmware?

http://updato.com/firmware-archive-select-model?record=6032047A52D711E7963AFA163EE8F90B
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
You need to flash the "USERDATA" file (that's in the AT&T firmware archive) onto the "UMS" box in Odin. The firmware is located in the "Downloads" section of the guide.
[Samsung Galaxy S8 Guides, News, & Discussion] t12icky0:
Thank you very much, that's exactly what I'm looking for. is this a file I can flash in odin without it wiping everything?
[Samsung Galaxy S8 Guides, News, & Discussion] fademaydarkness:
NO, it'll not work on your s8. The imei of the device you gave to at&t will only work or will be associated with the s4 device, that leads to wifi call or volte on s4 or will be properly activated on the s4.

Edit: try flashing user data of att again first wipe tho.
[Samsung Galaxy S8 Guides, News, & Discussion] CasualObserver89:
Since my VoLTE & WiFi calling doesn't work, do you think I would just be better off flashing the unlocked firmware? Besides bloat ware, does the unlocked have major features that ATT has disabled (also assuming unlocked cause use Band 30)?

---------- Post added at 08:11 PM ---------- Previous post was at 07:59 PM ----------

So when I go into Android Recovery, it says my CSC is AT&T. However, when I press Power + Bixby + Volume Down, it shows my carrier as "TMB" I am assuming that something didn't take during flashing? Do I need to wipe everything or would this be just 1 specific file I can flash through Odin without wiping?
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
1) The Unlocked firmware does NOT include carrier-specific features, such as Wifi Calling and VOLTE. AT&T has a funny way if activating other people's phones. You'll need to contact them and provide them with a dummy AT&T IMEI number (You can usually find these in-store) if you want Wifi Calling and VOLTE.

2) Don't worry, you flashed correctly and properly switched carriers. The CSC code in Download Mode is permanently hardwired onto your phone. So, there's no need to worry.
[Samsung Galaxy S8 Guides, News, & Discussion] CasualObserver89:
1) So if I go to an AT&T store and grab an IMEI from an S8, give them that and get them to associate it with my SIM? My IMEI remains in their database for service but the other IMEI gets associated with the SIM in my phone?
[Samsung Galaxy S8 Guides, News, & Discussion] David Horn:
Just flashed the XEU onto my S8 - any idea why it performed a factory reset? NAND erase definitely not ticked and expected it to remain on the same CSC.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
I mean, this guide doesn't really cover flashing Exynos devices; but flashing the "CSC" file in the "CSC" box in Odin deletes everything off of your phone (which is basically a factory reset).
[Samsung Galaxy S8 Guides, News, & Discussion] David Horn:
Ah, that explains a lot. Thanks Mike.
[Samsung Galaxy S8 Guides, News, & Discussion] nfremd:
Hi there, I'm new to Samsung devices. I've had nexus & Oneplus phones, so on those it's very easy to install new radios whenever you please with twrp. So using odin is new to me and totally foreign. So I'm cautious and moving slow. So please be patient with my question.

So I have the US unlocked s8 SM-G950U1 model with a t-mobile sim. The phone is working fine, but I'd like to take advantage of the faster LTE speeds (LTE-U) in my city (yes I live in one of the 6 cities being tested). But unfortunately, my current model number does not let me take advantage of that (or what T-mobile's support says). So I've read on reddit and on xda that some people have been able to flash the t-mobile radio on their G950U1 and take advantage of the extra speed.

So here are my questions:

- Looking at the instructions I'm confused what steps I need to take to achieve what I want. I don't want to wipe my phone or change the unlocked version, I just want the T-Mobile radio

- When following these instructions on the forum will this wipe my phone, or will I retain my apps/data?

Again, i've been searching this thread and reddit, but I can't seem to find specific instructions to what I'm trying to solve. Thank you for any help you can provide, I do apologize, I'm use to having unlocked bootloaders and being able to try anything and being able to recover from it. So with Samsung I just don't want to screw anything up :).
[Samsung Galaxy S8 Guides, News, & Discussion] Chief023:
Can someone with more experience doing this please confirm for me that I've got the major steps right before I start? I have a Verizon Galaxy S8. I recently moved my number to Cricket. Calling, text, data, etc. work, but I still have all the Verizon crap on my phone and it doesn't look like the OTA updates work anymore because I'm hitting a Verizon update server. In addition, my phone so far has only been on H or H+, not LTE. Will doing the carrier switch and installing the new firmware help with that?

From reading this thread, I think I should do the following:

1. Follow the Carrier Switch instructions and change the CSC to AIO for Cricket.

2. Install either the Unlocked Firmware or the AT&T Firmware.

Assuming these are the correct major steps, any suggestions on Unlocked vs. AT&T Firmware. I don't particularly care about Wifi Calling or VoLTE, so I'm guessing I should stay with the Unlocked.

Sorry for all the questions, I just want to be absolutely sure I'm doing the right thing before I start.

Thanks so much!!
[Samsung Galaxy S8 Guides, News, & Discussion] fabioplata:
please help, I do all the process, switch carrier, install unlocked frimware, I want use different att sim card, the phone its network unlock, but always when reboot the phone appear carrier att and my other sim not register on the network only emergency calls.
[Samsung Galaxy S8 Guides, News, & Discussion] Thor2j:
Either you have done something wrong or its sim locked.
[Samsung Galaxy S8 Guides, News, & Discussion] fabioplata:
No my sim its not locked,

33) Your phone will reboot. Once it reaches the 'factory binary homescreen', go to ADB on your computer and type in "adb shell".

OK

34) *LOOK A TINY BIT BELOW!* Type in "echo "XXX" > /efs/imei/mps_code.dat" (the quotation marks that surround the X's are used, but not the ones that surround the whole command... you know that by now- right?) and REPLACE XXX with your preferred CSC code.

I put echo "XAA" > /efs/imei/mps_code.dat , wich will be the answer on the pc, ok or something? the pc answer to me:

echo "XXX" > /efs/imei/mps_code.dat
[Samsung Galaxy S8 Guides, News, & Discussion] fabioplata:
I do many times all the process, when the phone rebbot in the beginning say carrier att, when do the process in the factory frimware in ime options say sold code or something like that, show AXX, in the final of the process, the phone start with unlocked frimware, nothing about att apps, I'm in colombia, if use a Movistar simcard the phone say only emergency calls, but if use a Avantel simcard the phone makes and received calls but no data, obviously I setup the network apn. That a prove that the phone it's not Sim locked. Even using a Movistar simcard in the beginning in the initial setup the phone show data but after finish the setup only emergency calls. Please help

I look in my phone and now my phone is XAA/XAA/ATT, maybe don't work for this, I think the phone need be a XAA/XAA/XAA
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
I believe flashing the T-Mobile "USERDATA" file in the "UMS" box in Odin will give you T-Mobile features and 'bloatware' without erasing your phone. Just to be safe, do a complete backup before you attempt this.
[Samsung Galaxy S8 Guides, News, & Discussion] Mike15678:
Yes, you have listed the correct procedure. Just be advised that everything from your phone will be erased, so make a full backup. Then, go ahead and proceed.

The unlocked firmware includes no carrier 'bloatware' and features while carrier firmware (obviously) does. Also, the unlocked firmware gets OTA updates from Samsung, while carrier firmware gets OTA updates from your carrier. That's pretty much the only difference.