yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S8+ Guides, News, & Discussion] alex.do:
I'm currently using G9650/DS HK variant. Snapdragon. Unlocked. Then I went back to VN for work. Sammy doesnt allow me to use Samsung Pay here. Well yes but I gotta use HK card and I have to cover all transaction fees (nonsense). So I've been looking for a way to switch to XXV see if Samsung Pay works here with my local card. That's why.

I tried the flashing combination file method but looks like it doesnt work (I was pretty sure I used the matching combination file). I was able to open Factory IME but dialing the code *#243203855# didnt bring any menu. I think this variant's CSC is hard coded with TGY. I hope I'm wrong.

I know with this unlocked variant I could just flash TWRP and Magisk and get it done with root. But samsung pay will probably stop working and knox gone forever. So I'm not willing to lose knox..... yet.

If you know anything abt it, please help :(
[Samsung Galaxy S8+ Guides, News, & Discussion] JeffATL:
On XAS with Sprint and can't Calling Plus to work. Wondering if it is possible to flash the SPR rom on top while using Home CSC to keep data, or is this a definite data reset. I don't care if csc shows xas still as long as some of the Calling Plus features get added
[Samsung Galaxy S8+ Guides, News, & Discussion] dallas4u:
Hate asking, but I've been trying to make this work and it keeps failing. I have a g955u locked to AT&T (carrier unlocked). I am trying to carrier switch first. The current bootloader is a v3. So, I downloaded a May 2018 T-Mobile g955u firmware. I was trying to find a factory binary v3 combo file, and found COMBINATION_FA70_G955USQU3ARD1. Seemed like the newest I could find... so I followed directions, using this file. When I get to the point of using princecomsy ODIN, and installing the home_csc, I choose the T-Mobile one from the firmware unpack. This fails with a "model dismatch fail".

The T-Mobile csc is G955UOYN3CRE2. WHat am I doing wrong??????

Thanks for ANY help I can get on this
[Samsung Galaxy S8+ Guides, News, & Discussion] Misha326:
I went from ATT firmware to TMB (TMobile) firmware and never did any carrier switching (as it wasn't in the instructions I used). It worked fine and added the TMobile app and a visual voicemail app. Maybe there was more I missed out on, but I never had to do all that adb stuff ;)

Preparing to go from TMB to Cricket on the 30th so I will prolly just go to the unlocked firmware.

Note: was on TMB for a whole 8 weeks and had to call csr 7 times due to people saying "Sure, no problem" and then not getting what we asked for. Also got charged a full month for only 1 day of service. Just don't even bother if you like human help. Wish I stuck with AT&T at this point. Would have saved a butt-load in cancellation fees :(

---------- Post added at 10:21 PM ---------- Previous post was at 10:15 PM ----------

I noticed this too in the instructions link - v1 or v2... My hubby has v3 also. The link for the v2 was to a Galaxy Note. The ending part after the G955U is the model specific part. For example, my base is G955USQS3CRE2 and hubby's is G955USQU3CRD4. Both S8+ and purchased at same time from local store. Mine was carrier unlocked; but, they couldn't get his to carrier unlock for whatever reason (even AT&T didn't know why it wouldn't unlock). So make sure the base numbers match after the G955U part (or G955U1).

Good luck!
[Samsung Galaxy S8+ Guides, News, & Discussion] tneot01:
Guys I need help. I want to flash the unlocked XAA firmware (G950U1) on my carrier unlocked TMB G950U with baseband CRE2 on Bootloader v3 (the 4th X is a 3). Firstly, can I do this without bricking the device because I have seen many places that this will brick the device. If this is not true, then secondly I want to know what I would need in terms of Odin to do this successfully and which firmware. I think I need to use the one with baseband G950U1UES3CRE2 at https://updato.com/firmware-archive-select-model?q=SM-G950U1&exact=1&r=&v=&rpp=15

Thanks for your help!
[Samsung Galaxy S8+ Guides, News, & Discussion] darkgiant:
I just want to make sure, I had the unlocked variant of the Galaxy S8+ (SM-G955U1) and had flashed instead of the SM-G955U variant of the T-Mobile firmware (as the SM-G955U1 firmware with T-Mobile wasn't working), and now my device model number is designated as "SM-G955U". I just wanted to make sure, was simply flashing all the fields via Odin enough? I also wasn't sure if I had to do carrier switching as one of the file names was "Canadian" and I live in the United States. Also, when it comes to the regular updates, I should automatically receive them OTA, correct?
[Samsung Galaxy S8+ Guides, News, & Discussion] noiofnine:
I was getting fails all day trying to flash a Verizon s8+ to ATT. Keep on failing at the stock firmware flash.

I was trying to flash 3CRE2 repeated it several times with different version of Odin, Comsy Odin, and Odin 3B.

Finally on the last try and last straw I was able to give up when I decided lets go down to 3CRD4.

It worked!!! May it just has to do with incremental flashes, if you guys are getting fails ob alb or phone mismatch, try going down to an earlier build.
[Samsung Galaxy S8+ Guides, News, & Discussion] roig.jason83:
Hi,

I'm stuck on Step 9, under "Carrier Switching".

"9) Click on the "AP" box and navigate to the extracted Factory Binary folder. Double click on the file the starts with "COMBINATION""

I click on the "AP" box, but apparently the "COMBINATION" file is not a supported extension, so it doesn't appear. The extension appears as ".tar.rar.". Only "AP" (.tar, .md5, .smd, .gz, .tgz) extensions appear when you click on the "AP" button. I'm confused as to why this is happening. Do you have an idea what to do next?

Thank you
[Samsung Galaxy S8+ Guides, News, & Discussion] shaggyskunk:
Yeah you can't Flash a .tar.rar file with Odin or anything else - a file ending with "rar" is zipped ?

Sent from my SM-G965W ??
[Samsung Galaxy S8+ Guides, News, & Discussion] Aakash Gupta:
Hi guys. I have an exynos variant of s8+ from Singapore and I want to change its csc to the one that is for US.

I want to do this I will be staying in US for a year or so and this way I will be able to get Samsung US offers on spay.

I do not know the US csc code. From what little knowledge I have it seems here there are many csc here.

I have a global model G955FD.

Can anyone help me out or point towards correct thread.
[Samsung Galaxy S8+ Guides, News, & Discussion] littlebo:
Anyone tried CSC switch trick with ver5 boot ?
[Samsung Galaxy S8+ Guides, News, & Discussion] CLKeenan:
[MENTION=8352198]Mike15678[/MENTION] I'm walking through steps 32-33 of changing my carrier. When I get to the install screen after typing in the *# code, all I have available to me is 'GCF' as the Sales Code. No other ones are listed. Any ideas what I could've done wrong here? Could this be because I'm already outside of the US/Canada and have a UK SIM card in my device?
[Samsung Galaxy S8+ Guides, News, & Discussion] littlebo:
Ok , ill answer my own question , its still possible to change csc with ver5 boot , all the same , combination + home_csc from W fw and so on. I was able to convert U to W to get voLTE and wifi calling on freedom.
[Samsung Galaxy S8+ Guides, News, & Discussion] avo1213:
Hey, could you possibly post some links to the firmware you used. I have an unlocked U ver5 s8+ and want to switch it to virgin canada from sprint
[Samsung Galaxy S8+ Guides, News, & Discussion] derektm.:
This should be added to the first post! The modded prince comsy verison doesn't work anymore to flash unlocked to latest Verizon devices. Thanks!
[Samsung Galaxy S8+ Guides, News, & Discussion] lentm:
A question here.

I have an unlocked T-Mobile S8+ on Sprint, and firmware update check keeps failing.

I had to insert my wife's T-Mobile sim card and restore it back to T-Mobile firmware to upgrade to RH1, then re-insert my Sprint sim.

Now it shows as XAS/XAS/TMB where it was before SPR/SPR/TMB.

Still getting error with update checking.

If I want to ODIN to just upgrade to next version with keeping data when it comes out,

do I ODIN it with TMB firmware or SPR? Which HOME_CSC file do I use to keep the data?

Thanks a bunch!!
[Samsung Galaxy S8+ Guides, News, & Discussion] iPedrow:
I want to try this but the CSC firmware that I want have BL 2, but mine is 5. I think is obvious that I should wait for the carrier (TCE) Mexico to update its firmware to newest bootloader wich is 5. That's correct right?

Or any ideas to flash G955F firmware (BL 2) in a G955U BL5, so I can activate voLTE and anti spam filter?
[Samsung Galaxy S8+ Guides, News, & Discussion] alirz:
So to convert my g955u1(it was originally g955w) which is on the latest Oreo September patch, back to W fw, I have to use the old factory binary and the home csc from the current/latest W fw and follow the same steps to revert back to g955w?
[Samsung Galaxy S8+ Guides, News, & Discussion] alirz:
So i took it upon myself to get the combination files from a paid site for the s8+. To help the community here are BL5 combination files for G955U1 and G955W.

G955U1: https://mega.nz/#!qLgy2YjK!Vceu7HxMhfY4mEPILgu3GsKG0EOeD0aAj-TNwpip3GY [COMBINATION_FA70_G955U1SQU5ARH8_CL12542406_QB19531 954_REV00_user_mid_noship_MULTI_CERT.tar.md5]

G955W: https://mega.nz/#!zWgEzSQY!oLCxYkzJziTlrb9Yq-PkVWX8jk543aL8zzX4asdQq8I [COMBINATION_FA70_G955WSQU5ARH8_CL12542406_QB195319 54_REV00_user_mid_noship_MULTI_CERT.tar.md5]
[Samsung Galaxy S8+ Guides, News, & Discussion] intrepid9:
This would work for G955U as well right?
[Samsung Galaxy S8+ Guides, News, & Discussion] maxshop:
Hello,

Noob question....I am currently on the T-Mobile ver. G955USQU5CRIB. What is the best way for me to switch to the AT&T G955USQU5CRIB?

Thanks
[Samsung Galaxy S8+ Guides, News, & Discussion] Wing00w0:
I also have exynos TCE its supposed to be a unlocked Mexico version that it's the MXO but to flash it only put in Odin all except the CSC if you put the HOME CSC you will have the problem that the setting menu it's all expanded and some of the options does not work and fails.

Its supposed(because I go back to TCE) that if you flash the CSC (not the home) it will work fine and setting will be ok

I will in this weekend flash it but with no CSC to see what happens,but I know that India INA its unlocked and exynos it has Spanish keyboard so I will check it later
[Samsung Galaxy S8+ Guides, News, & Discussion] Darkshades:
Hi, I've been with ATT for my entire life and as such my S8+ was purchased as the ATT variant at launch. Tomorrow I'll be switching to TMobile. Are there any pros/cons to using a TMobile sim on an unlocked ATT variant? Would you guys recommend I follow the carrier switch? Under ATT I enjoyed using the Wifi calling and voicemail app, I presume these won't be options using the ATT firmware with a TMobile sim? My G955U is the latest OTA firmware provided by ATT.

I appreciate any and all comments, feedback and suggestions! Thanks!
[Samsung Galaxy S8+ Guides, News, & Discussion] ukcats82:
G955USQU5CRIB Anything Possible?

Any hope doing anything with this G955USQU5CRIB? I have a Sprint S8+ with Android 8.0. ANy help would be appreciated.
[Samsung Galaxy S8+ Guides, News, & Discussion] deadedge7:
COMBINATION_FA70_G955WSQU5ARH8_CL12542406_QB195319 54_REV00_user_mid_noship_MULTI_CERT.tar.md5

download not available?
[Samsung Galaxy S8+ Guides, News, & Discussion] waa2398:
Guys, quick question... Is it possible to downgrade my bootloader? My Galaxy S8+ has the latest carrier update which is G955FXXU4CRJL and I want to downgrade to G955FXXU2CRF7. Unfortunately, as you will see bootloader in the new version is 4 and the one before was 2. Any help will be greatly appreciated.
[Samsung Galaxy S8+ Guides, News, & Discussion] Wing00w0:
No i'ts no possible , once you update your bootloader you can only flash updates from that bootloader, so if your original carrer is still in bootloader 2 you will have to wait until they release a booltoader 4 update
[Samsung Galaxy S8+ Guides, News, & Discussion] rperfetti:
Thanks dbpaddler! Your suggestion sounded to good to be true but it works like you said. The instructions on the first page are very outdated. I was trying to change Galaxy S8+ from ATT to T mobile (Mint Mobile) so that WiFi calling would work again. The only thing that worked for me was the standard firmware flash but could not change the carrier to T-Mobile. Wow, was preparing to spend weeks figuring this thing out. Ran the "Flashing Unlocked Firmware" as outlined in the first page of this thread as you suggested and it worker without issue.

Phone is working with unlocked firmware. Carrier switch happened automatically. WiFi calling is working again. Thanks for the tip!
[Samsung Galaxy S8+ Guides, News, & Discussion] dbpaddler:
I was wondering when this would get a mention. I kept telling people on slickdeals with various Samsung deals about doing this, and people let giving me crap, yet I've done it with an S8, S8+, S9+, Note 8 and Note 9 from Tmo, Verizon and unlocked going to Tmo, Sprint, Verizon and AT&T (via Unreal). It's really a great leap ahead in being carrier agnostic. And it's about time.
[Samsung Galaxy S8+ Guides, News, & Discussion] John Rippert:
I have a new, not refurbished or unlocked, S8+ that I bought off Ebay recently. It is at Android 7.0 and it says there are no software updates for it. I went into the blue screen to check the carrier and it is ATT. I am using the T Mobile sim card from my previous Sony smartphone. In order to change the carrier to T Mobile and be able to upgrade my firmware to the 8.0 that T Mobile has available do I need to do a carrier switch or just load the standard T Mobile firmware? Or do I have it all wrong and need to do something else?
[Samsung Galaxy S8+ Guides, News, & Discussion] yablokosmonaut:
Hello all - I have an S8+ with sprint firmware that already has firmware with what seems to be a Rev 5 bootloader. I can find nothing about that specific bootloader but I would like to check that the general rule works - If I use a G9557U1 firmware that also has a Rev 5 bootloader, should there be no issue? I have found one and I am downloading it, but I want to confirm.

The G955U1 firmware I found ends 5CRF5, and my phone's current G955U firmware ends with 5CRK1 (November 1 security update).

If it's a simple fact that it doesn't matter which BL version as long as they match, then I am ready to pull the trigger in Odin to cut out some useless system services.
[Samsung Galaxy S8+ Guides, News, & Discussion] AhmedKhan123:
GgvI flashed U1 firmware on my G955U. Now when I reverted back to stock G955U firmware, it shows me XAA/XAA/SPR. I want to get it to SPR/SPR/ SPR. I've flashed stock firmware multiple times but each time without USERDATA as i don't want any Sprint bloatware or bootanimation. Is there any way to get SPR/SPR/SPR without getting bloatware?

Thanks in advance.
[Samsung Galaxy S8+ Guides, News, & Discussion] Schmoeletor:
Hi

To flash a unlocked firmware, do i need to follow carrier switching first?

I have a ATT G955U on baseband G955USQU5CRIB (bootloader 5 right?)

And i dont want the ATT bloatware, y find the following firmware for the G955U1 i supose to be unlocked G955U1UES5CRL2 (also bootloader 5) any risk if i flash this firmware?

Can i follow the guide section to flashing a unlocked firmware? or i miss any step on the guide?

By the way do you know how can i get combination files for bootloader 5?

Sorry for my newbie cuestions, but is my first Samsung Phone .

Thanks in advance
[Samsung Galaxy S8+ Guides, News, & Discussion] Adnan65:
[sir i m in big problem my s8+ shows g955w in everywhere in my phone like in about phone and i checked through imei info the website says my phone is g955u and also samsung info app from playstore shows my csc code is xac which is a canadian version and g955u is us version now plz tell me what to do bcz i want to install g955u1 for reason of one ui plz help me thanks in advance]
[Samsung Galaxy S8+ Guides, News, & Discussion] ComradeZ:
So is this guide out of date? All I see are Bootloader 1 and 2 stuff. Arent we on v5 already? Am I just wasting time asking questions in yet another abandoned S8+ thread?
[Samsung Galaxy S8+ Guides, News, & Discussion] knickfan8:
I'm trying to flash the latest unlocked SM-G955U1 firmware on an S8+ Verizon phone so I can remove bloat & unlock tethering.

Will the aforementioned steps still work on the baseband I have?

If not can anyone help with the latest steps to make this happen. Thanks! Below are the details of my phone.

Specs:

Phone Model: Verizon Samsung Galaxy S8+ (SM-G955U)

Baseband: G955USQS5CSB1

Android Version: 8.0.0

Android Security Patch level: February 1, 2019
[Samsung Galaxy S8+ Guides, News, & Discussion] folusmile:
I think the method is long past..jst google
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
I replied to you in my S8 guide.
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
First, insert a T-Mobile SIM card so your CSC can change to "TMB". That's easier than following the "Carrier Switching" section (the only reason you can skip "Carruer Switching" is because your CSC is set to "XAA" which is unlocked). Then follow the "Flashing Standard Firmware" section.
[Samsung Galaxy S8+ Guides, News, & Discussion] kanchyhemboy:
Thing is, I bought the phone in the US but I am using it in India, so a T-Mobile SIM is not available. Any other alternatives? Thanks a lot for the reply btw.
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
If you have a U.S. carrier, check with them to see what plans they offer. But I recommend that you buy a SIM card from India and put it in your phone, as those plans are cheaper.
[Samsung Galaxy S8+ Guides, News, & Discussion] kanchyhemboy:
I am using a sim from India, but thing it it's a VoLTE only network and that's why I need VoLTE....so will flashing T-Mobile give me VoLTE on my Indian sim? Sorry about the misunderstanding, I wasn't very clear I realize :D
[Samsung Galaxy S8+ Guides, News, & Discussion] Mr. Orange 645:
Apparently you can't. From everything I've read, that last CSC code is hardwired into the phone. It doesn't matter, it only tells you which firmware was originally loaded on the phone.

I.e. I bought mine unlocked from Samsung.com, so it was XAA. I've since flashed the T-Mo firmware and it reads TMB/TMB/XAA. Whereas my wife's S8+ is a T-Mo version and reads TMB/TMB/TMB even though we're running the same software.
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
Thank you for your clarification. I knew that the original CSC was hardwired into Download Mode, I just never wrote about it. I figured people wouldn't care.
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
Try flashing firmware for the Indian carrier, which you can find at fw.updato.com. To flash, you need to follow the "Flashing Standard Firmware" section. Remember to insert the carrier's SIM card so your CSC can change (because you're on "XAA", which is unlocked).
[Samsung Galaxy S8+ Guides, News, & Discussion] kanchyhemboy:
Haha and there lies the main problem I have the Snapdragon version and the Indian version is Exynos....so no Indian version is there to flash for this device :(. Your advice is much appreciated tho, I have been scouring XDA since day one and your post was very good.

I was wondering tho, are the CSC files that you use in Odin model specific? Like for example, could I try flashing a USA Snapdragon firmware but change the CSC to an Exynos Indian one?
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
*sigh* I will go back with your original idea about flashing T-Mobile firmware. Follow the "Flashing Standard Firmware section completely and tell me how it goes. T-Mobile should be compatible with VOLTE.
[Samsung Galaxy S8+ Guides, News, & Discussion] kanchyhemboy:
Ya I'll do that next. Just to clarify, using the guide I'll flash the T-Mobile firmware G955USQU1AQEF which is on updato and also follow the carrier switching guide and put TMB in the last step right?
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
Don't change the CSC.
[Samsung Galaxy S8+ Guides, News, & Discussion] normanallen:
I'm guessing I can use this guide to move my phone from factory T-Mobile to AT&T by following Carrier Switching with Flashing Standard Firmware, yes?
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
Yes, just make sure that T-Mobile didn't SIM lock your phone.
[Samsung Galaxy S8+ Guides, News, & Discussion] normanallen:
Thank you. I was told by T-Mobile that I have to wait 9 more days before they will unlock the phone since I haven't had it for 40 days yet. Bummer, but I can wait a few more days :).
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
No problem. Just wait until they unlock your SIM card so you can switch to AT&T.
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
I updated the guide with information regarding the last three characters of the "XXX/XXX/XXX" sequence. Pros and Cons are coming soon. Sorry, it was my birthday today.
[Samsung Galaxy S8+ Guides, News, & Discussion] untyped:
Happy BDAY !!! :D:D:D
[Samsung Galaxy S8+ Guides, News, & Discussion] Mike15678:
Thanks.
[Samsung Galaxy S8+ Guides, News, & Discussion] sixth_element:
Pardon my ignorance as the S8+ is my first Samsung phone (I come from unlocking and flashing roms onto Nexus phones).

Is it possible to for me to enable VoLTE and Wi-fi calling on my unlocked S8+ (SM-G955U) without the added AT&T bloatware from the AT&T firmware, or do I need to just deal with it if I want these features enabled? My service provider is AT&T but I always buy unlocked phones for international travel.

Thanks!
[Samsung Galaxy S8+ Guides, News, & Discussion] Misha326:
Been Too Long (Need Help Snap S8+)

I have Samsung S8+ (G955U) SPRINT phone with TMOBILE logo and "unlocked" used phone which I am using on CRICKET (essentially ATT). I have tried searching threads for removing branding and changing carriers, et al, but I am stuck. I am wanting to remove the TMOBILE logo because they suck and I seriously cannot stand to see anything TMB - needless-to-say we had a falling out after only 3 months of service. Soooo ANYTHING BUT TMB please. I know AT&T works on CRICKET but prefer standard Android with no branding and bloatware. HELP. I have flashed with Odin before on my old S8+ to remove the AT&T crap but for whatever reason, I am unable to get TMB off of this one. It automatically updated a few weeks ago so I have the ONE UI & Android 9. I don't even care if I have to downgrade and wait for the 9 to come around again if necessary. I hate TMB that much!

So here's the basic info:

IMS registration status: Not registered

Phone Status: Official

One UI Version: 1.0

Android Version: 9

Baseband version: G955USQU5DSD3

Kernel version: 4.4.153-15480860 #2 Wed Apr 10 17:114:07 KST 2019

SE for Android Status: Enforcing

Service Provider: TMB - XAA - SPR

I think I have everything DL'd that I could possibly need and I have USB 2.0 avail for transferring. Just need to figure out why I cannot unbrand.
[Samsung Galaxy S8+ Guides, News, & Discussion] Santho07:
Can anybody kindly link me the Unlocked Firmware for (Bootloader v5)?

I live in outside usa, i have a t-mobile network unlocked S8+, now i want it to be completely unbranded. Which firmware should i flash? Help please.

Phone Info:

Bootloader version: G9555USQU5DSD3

Product code: SM2G955UZVAXAA

Firmware's CSC Code: XAA

Active CSC Code: TMB
[Samsung Galaxy S8+ Guides, News, & Discussion] rks750:
Having trouble with this method on a SC-03J (s8+ NTT Docomo ) Snapdragon phone. I am able to get to factory binary but when I flash CSC and go to IMIE screen I am not able to see the codes I only see one sales code with DCM.

Any suggestions ?
[Samsung Galaxy S8+ Guides, News, & Discussion] mhmdeveloper:
can i get home csc for Bootloader 5?