yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
You can switch the U Sprint firmware to the U1 and then to the U AT&T firmware, but that will not change the SIM lock to the original carrier. Get your device permanently SIM unlocked before flashing. Flashing to the AT&T firmware not not allow you to use AT&T's WIFI Calling because AT&T locks those features to devices only sold by AT&T through the devices IMEI.
[Samsung Galaxy Note 8 Guides, News, & Discussion] w8wca:
That is the key you need to do first just in case you are missing it.

You May be able to contact the Cell Company the phone was purchased from and get them to unlock it.
[Samsung Galaxy Note 8 Guides, News, & Discussion] Dragon1278:
I did, they needed the username and password of the previous owner (I dont have) or I can sign up for a 90 day contract after that they will unlock it. They say thats the only 2 ways of doing it. I guess I am screwed out of money for buying a phone that wasn't already unlocked.
[Samsung Galaxy Note 8 Guides, News, & Discussion] black96ss:
I would think it's a good sign, means it's actually connecting to the server to check for the update. Like you said the question now is whom the update coming from? Keep me updated
[Samsung Galaxy Note 8 Guides, News, & Discussion] foreverbeta:
I just got off the phone with T-Mobile tech support. My unlocked Note8 was not receiving the latest N950USQU2BQJA firmware file (just saying my phone was up to date). T-Mobile explained that the software update query is made to Samsung. Samsung checks to see if there is a match based on your CSC scheme. For the unlocked phone the third CSC is XAA which means it was sold as an unlocked variant. T-Mobile did not verify their software for this variant and so there is no software available. It is uncertain if they will and I am guessing that they won't. All signs point to manually updating via Odin.
[Samsung Galaxy Note 8 Guides, News, & Discussion] biggboii:
Worked for me... switched from Xfinity to T-Mobile. Good job.
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
So based off this all updates will have to roll through Samsung, unless it's a carrier specific update in which case Samsung doesn't care. This unlocked phone BS from Samsung doesn't sound like such a great deal if you're on ATT. No Wifi Calling, no VOLTE, no updates, and I'm sure there are a few other things I missing. Might just flash back to XAA and sell it for the ATT model.
[Samsung Galaxy Note 8 Guides, News, & Discussion] borijess:
I have unlocked and flashed the ATT firmware. I get VOLTE and visual voicemail. WiFi calling and video calling doesn't work.
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
Did you flash the USERDATA and CSC over the XAA firmware? That didn't work for me but I think I might have done it wrong. So I flashed the entire carrier ATT firmware and got everything working.
[Samsung Galaxy Note 8 Guides, News, & Discussion] borijess:
I flashed the entire ATT firmware.
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
How about a full data wipe from recovery?
[Samsung Galaxy Note 8 Guides, News, & Discussion] borijess:
Did that multiple times
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
Got me then. I might flash back to XAA and sell it for the ATT version.
[Samsung Galaxy Note 8 Guides, News, & Discussion] consulrotger:
help

im tryin to do all the process but i cant...any help
[Samsung Galaxy Note 8 Guides, News, & Discussion] consulrotger:
hey my friend how do you change de imei?
[Samsung Galaxy Note 8 Guides, News, & Discussion] renegaderon:
I'm having the exact same problem, I hope y0u figure it out.
[Samsung Galaxy Note 8 Guides, News, & Discussion] purchasedPhone:
If you took the update you can not downgrade, the bootloader is changed and you can not go backwards. So if you are on the second version of the bootloader you are stuck there for now. I'm not sure which versions of android are hosted here, first or second revision
[Samsung Galaxy Note 8 Guides, News, & Discussion] consulrotger:
yes i took the update.....and there is no solution for that?
[Samsung Galaxy Note 8 Guides, News, & Discussion] purchasedPhone:
I'm no expert, I'm just sharing what I saw in the root discussion. Samsung updated the bootloader to try and patch the root method, the smart guy, me####, says he is working on a new method, if he discovers one, a downgrade is a possibility. You may still be able to flash another carrier version as long as it uses the new bootloader and not version 1

---------- Post added at 04:42 PM ---------- Previous post was at 04:40 PM ----------

I always forget to quote people. Look up ^
[Samsung Galaxy Note 8 Guides, News, & Discussion] consulrotger:
thanks my friend if you find something please pm me ....thanks a lot
[Samsung Galaxy Note 8 Guides, News, & Discussion] phenix3030:
I need help, I flashed my Note 8 back to original stock I used XAA, I was using VZW firmware, but this firmware is more for Sprint, I even have a notification said "Sprint OMADM" that can't take it off, please I need to know the right firmware.
[Samsung Galaxy Note 8 Guides, News, & Discussion] taikoboi:
Unable to Flash to Unlocked from Sprint

Hi I've been trying to flash my Sprint Note 8 (with the recent update from few days ago) to the unlocked version but I keep getting an error. Either fail auth or sha256 from odin. I wonder if the latest update from sprint somehow is not letting me flash. If anyone can help I'd appreciate it.
[Samsung Galaxy Note 8 Guides, News, & Discussion] wooddd:
Question.... I have the Note 8 Tmobile version (sm-n950U) - it is unlocked. I am using consumer cellular. I was on their TMobile towers and could use wifi calling, but have switched to the ATT towers and now cannot use wifi calling. I'm trying to figure out if there's a way to do that. If I update the FW to the ATT version FW here will that allow me to use wifi calling? What about a hard factory reset? (don't think that will, but have to ask!). Any other thoughts? Thanks!!
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
Unfortunately, no. AT&T blocks devices not sold directly from them from using things like WiFi Calling. They do so using the devices IMEI.
[Samsung Galaxy Note 8 Guides, News, & Discussion] wooddd:
Ah..... okay. Could I do something like switch to AT&T and have them turn it on? And then switch back?
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
Yes, but their system automatically scans for device changes at least twice a week. If you switch it to an AT&T device, then call Support and ask them to lock that device in because you regularly switch devices for work or something but need your WiFi Calling when you are at home using your AT&T device. They might lock it in so the device doesn't update in their system.
[Samsung Galaxy Note 8 Guides, News, & Discussion] wooddd:
Thanks so much for your time!
[Samsung Galaxy Note 8 Guides, News, & Discussion] DericHensel:
I am currently trying to do this, and none of the combination files he has listed for carrier unlock match what i have, all the files he has wont work with android pi (9). ive been searching for about an hour and its incredibly difficult to find the files i need to follow this guide. any help would be appreciated and ill provide more info if needed.
[Samsung Galaxy Note 8 Guides, News, & Discussion] waninoko:
This forum has been so helpful!! Thank you. I've got a question @mustang7757 -

I flashed from U1 to U

AP>AP, BL>BL, CP>CP, Home CSC < CSC, no userdata.

My version also shows TMB/TMB, TMB/XAA

Build Number: SP1A.210812.016G998USQU4BUK7 (Android 12, One UI 4)

I have all the tmobile features including RCS, eSIM, etc.

My question is, will I still get OTA updates and will they be the carrier path OTA or the Unlocked path OTA from now on?
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
You will get OTA's normally, but for the TMB firmware.
[Samsung Galaxy Note 8 Guides, News, & Discussion] waninoko:
No issue with using HOME CSC?
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
Using the Home CSC, you prevent a proper conversion. More than likely, you will not get updates that will install at all or correctly if you used the Home CSC.
[Samsung Galaxy Note 8 Guides, News, & Discussion] waninoko:
Can I just reflash everything, this time with CSC to fix it?
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
Yes. Just make sure you wipe data/factory reset after the flash.
[Samsung Galaxy Note 8 Guides, News, & Discussion] k-Tracker:
Hi, I'm a bit lost here finding a proper files for switching from VZW to XAA on N950UOYN8DUE1:

Model: SM-N950U

AP: N950USQU8DUE1

CSC: N950UOYN8DUE1

CP: N950USQU8DUE1

Country: VZW

Would you please suggest where to find it?
[Samsung Galaxy Note 8 Guides, News, & Discussion] Mannymaa:
I'm stuck at step 16 of the switch Carrier. I found all related firmware matching my phone but can't get the Home_CSC right.

My model number is N950USQS8DTJ1. I tried all of your Home_CSC files on Ordin (Prince Comsy) but it fails every time.

My phone is stuck on downloading mode.
[Samsung Galaxy Note 8 Guides, News, & Discussion] xcutnr1:
There is a combo firmware for bootloader v8. Can this be used with it?
[Samsung Galaxy Note 8 Guides, News, & Discussion] JayeDohe:
deleted
[Samsung Galaxy Note 8 Guides, News, & Discussion] SRCP:
Can I follow the guides here to get a N950U1 on N950U to get it working? Even if WiFi calling doesn't work?

It was disconnected due to the shutdown.
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
What do you mean by, "to get it working"? Converting to the AT&T firmware will not get WiFi Calling working unless your device was actually sold to you by AT&T. The U1 firmware is the most universal, especially if you plan on changing carriers in the future.
[Samsung Galaxy Note 8 Guides, News, & Discussion] FireKris:
With the shutdown of 3G on AT&T, the N950U1 unlocked devices no longer make calls since AT&T did not enable VoLTE on N950U1 but the N950U model did get it unlocked. I believe that they are asking if following this guide and switching to the N950U firmware will enable VoLTE for their U1 model.
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
No. Flashing to an AT&T firmware will not enable VoLTE. AT&T uses the device IMEI to verify if the device was sold by AT&T to a customer. If the device is not purchased from AT&T, it will not be able to use VoLTE on AT&T.
[Samsung Galaxy Note 8 Guides, News, & Discussion] surgemanx:
I have a Note 8 U1 myself on AT&T and it won't enable VoLTE either.I thought about switching to the U firmware,and was following this post.I do want to say this,and I did this on an LG V60 from U.S. Cellular and AT&T has the IMEI of that device.I cross flashed it with a LUNS AT&T firmware in Qfil and it's been rolling since March 18th when they did the shutdown in my area.It has full VoLTE and VoWifi working 100%.I've been expecting the system to catch it,but knock on wood still going.Another odd thing I noticed as well.The phone doesn't even show up in my account period since I did the cross flash?So with that being said,it's not IMEI specific it's their sh** software is what their system is looking for.Here's what it looks like in my account.LOL....
[Samsung Galaxy Note 8 Guides, News, & Discussion] surgemanx:
I'm trying to do the same exact thing.I have the N950U1 and it's an original AT&T device.I have run the IMEI number,and verified it's a true device from them.This is another puzzle I have run in to with this 3g shutdown.For some odd reason they whitelist the N950U but not their own n950U1?And yet again,a software issue with them and not supporting certain devices.
[Samsung Galaxy Note 8 Guides, News, & Discussion] realIK1724:
Waiting for the sm n950u1 firmware to download so I can apply it to my sm 950u device. Does anyone know how to unlock the bootloader? Unlocking the volte is great, but I'd rather use android 12 than 9. I visited sampwnd's website but it has been closed.
[Samsung Galaxy Note 8 Guides, News, & Discussion] Clearlee:
GUIDE All US Firmware Switch Carrier Flash Carrier/Unlocked]SM-N950U & Verizon. Hello, 2022 new year hear. Bootloader 8 pie & "smn950u squ8dvb1". I am desperatly seeking att cross flash? is this still possible now on pie and bootloader 8?​

I raelly to get the big awful RED ball off me ..HELLO, yak. TY​
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
The best way to do so would be to flash to the U1 first, then flash to the AT&T U. The bootloader versions for each flash would have to start with the same number, so if your device has bootloader v8, then what you are flashing has to have a v8 bootloader as well. WiFi Calling and VoLTE will not work on AT&T because AT&T uses the devices IMEI to verify whether or not it was sold by AT&T to enable or disable these features. They will cite it as a compatibility issue, which is pure b/s.
[Samsung Galaxy Note 8 Guides, News, & Discussion] Clearlee:
Thank you for your kind reply. I used the online version of Odin and now i have an AI "OMADM"aka Sprint's Chameleon running and a custom ROM from Net10/Verizon and I must say everything is getting fixed by remote service. "NO BLOAT" AND I CAN CHOOSE WHAT i WANT IF IT GOES ON IT GOES ON OR OFF. bUT i CAN'T COMMUNICATE WITH THE THING! mY PHONE IS RUNNING AT 90% ON WIFI RIGHT NOE TOO! JusT wIlD ...WTF over?????
[Samsung Galaxy Note 8 Guides, News, & Discussion] surgemanx:
I need to do this as well for my other halfs Note 8.It's an original AT&T variant,but won't make and receive calls because it's a U1 version?I have a 3rd party app I'm using to enable VoLTE every time I reboot it..lol...
[Samsung Galaxy Note 8 Guides, News, & Discussion] Clearlee:
It's all KOREAN and it works ???? smfh...NEXT!
[Samsung Galaxy Note 8 Guides, News, & Discussion] dave678:
If I insert my Verizon sim card into a unlocked Sprint Note 8 running Nougat then flash the Verizon firmware it should work right and give me Advanced Calling and wifi calling? Or do I still need to follow this guide?
[Samsung Galaxy Note 8 Guides, News, & Discussion] shabtab:
I am getting this error MDM Mode. Can't download (Pit).

Please help me I tried factory data reset but nothing works
[Samsung Galaxy Note 8 Guides, News, & Discussion] Hexagon8:
Hello,

I originally purchased factory unlocked note 8 then flashed latest or last Tmobile firmware successfully. Now I want to switch back to unlocked firmware but not getting through, do you know which file I need? I tried latest version from sammobile.com but not able to do it and it says failed. I tried all the steps from xda guide but no luck. Does it mean I cannot switch back now to unlocked firmware? Really appreciate your help
[Samsung Galaxy Note 8 Guides, News, & Discussion] treysky54:
Use Frija for your firmware downloads.

Releases · SlackingVeteran/frija

Contribute to SlackingVeteran/frija development by creating an account on GitHub.

github.com
[Samsung Galaxy Note 8 Guides, News, & Discussion] Hexagon8:
Thank you for the response. Currently the Tmobile version is 9 and baseband version is N950USQU8DVC5.

I will try as you said but when I tried upgrading the latest OS 9 patch from sammobile.com using Prince Comsy's Odin it just says failed 1 and nothing else. I am checking all four options AP, BP, CSC and CP
[Samsung Galaxy Note 8 Guides, News, & Discussion] treysky54:
Let's make sure you have the right rom as step one. Just type in what the screenshot shows and dl that rom and try it first. Other that that, just seems like an access issue but the log would be useful, along with the steps/settings you're using to flash the phone. The BL version should all be the same, so I can't see that being the issue.
[Samsung Galaxy Note 8 Guides, News, & Discussion] Hexagon8:
I downloaded the file and Using Prince Comsy's Odin, added AP, BL, CP and CSC and it failed with below logs:

I have tried different USB ports and made sure USB debugging is enabled too.

<ID:0/004> Added!!

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<ID:0/004> Removed!!

<ID:0/004> Added!!

<ID:0/004> Odin engine v(ID:3.1203)..

<ID:0/004> File analysis..

<ID:0/004> SetupConnection..

<ID:0/004> Initialzation..

<ID:0/004> Set PIT file..

<ID:0/004> DO NOT TURN OFF TARGET!!

<ID:0/004> Get PIT for mapping..

<ID:0/004> Firmware update start..

<ID:0/004> SingleDownload.

<ID:0/004> abl.elf.lz4

<ID:0/004> Complete(Write) operation failed.

<ID:0/004>

<ID:0/004> Complete(Write) operation failed.

<OSM> All threads completed. (succeed 0 / failed 1)
[Samsung Galaxy Note 8 Guides, News, & Discussion] Hexagon8:
This is fixed after multiple tries and using patched version of Odin 3.13.1
[Samsung Galaxy Note 8 Guides, News, & Discussion] faisalb4:
@jcsww Hi i am facing the same issue of not getting OTA updates on my S916U AT&T device which has been unlocked through CPID I followed your instructions and flashed it with U1 firmware build with XAA CSC manually through PC using ODIN and fully flashed by not using HOME CSC as you had mentioned currently my phone is upto date on september software but after flashing i am still facing the same issue Whenever i tap on software update it says connecting to server and then Server registration failed appears can you guide how can i receive the OTA update on my device
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
If your device is up to date and flashing a full firmware hasn't resolved the issue. Are you sure you are connected to Wifi when checking for updates? Did you buy the device directly from Samsung or AT&T or online through a site like Ebay? Are you located in a region, like China, that might block access to servers located in the US?
[Samsung Galaxy Note 8 Guides, News, & Discussion] faisalb4:
@jcsww Yes i am connected to wifi , i am outside USA and I didn't Purchase the phone from AT&T directly , My phone is unlocked through Samsung CPID Server so i am able to use any carrier sim card as per my choice with out any hassle the only thing happening is OTA updates i saw many posts suggested to flash U1 firmware to resolve this issue is there any way OTA updates can be received or i have to update it manually everytime
[Samsung Galaxy Note 8 Guides, News, & Discussion] jcsww:
Have you tried a VPN connection to a US server to see if you still get the same error? Devices used overseas might not be affected by a blacklist, which is why most stolen or devices that never were fully paid off are sold to overseas buyers. You might want to check and see if the device is not blacklisted, just to rule that out.

swappa.com/imei
[Samsung Galaxy Note 8 Guides, News, & Discussion] joshpaynee:
stay away from tmobiles QJA update it stops you from being able to switch firmwares
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
Which Odin did you use?
[Samsung Galaxy Note 8 Guides, News, & Discussion] drlepore:
So, if this is true, it may be more than T-Mobile. I have a SIM-unlocked Sprint Note8 with baseband N950USQU2BQJA and the carrier switch procedures fail in Odin v3.12.7 and in PC Odin. I've tried every which way and it fails.
[Samsung Galaxy Note 8 Guides, News, & Discussion] taikoboi:
Software update

The latest updates have already been installed.

Current version: N950USQU2BQJB/N950UOYN2BQJB/N950USQU2BQJB

It should be sprint

---------- Post added at 07:38 AM ---------- Previous post was at 07:37 AM ----------

The two from OP on this thread.
[Samsung Galaxy Note 8 Guides, News, & Discussion] joshpaynee:
I have tried every way possible to mine was originally att now stuck at tmobile because over the air update from tmobile

---------- Post added at 04:43 PM ---------- Previous post was at 04:40 PM ----------

Need a away to downgrade lol
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
Ouch, that blows.

I just reflashed back to the unlocked XAA, which is what it came with anyway. I had flashed to ATT and it worked just fine for weeks but got nervous with updates rolling out and with Oreo around the corner figure I better jump back.

Edit: After flashing back to XAA and setting up, I get a notification there is a software update to QI5, not sure if I should take
[Samsung Galaxy Note 8 Guides, News, & Discussion] black96ss:
switching firmwares meaning you can't downgrade or do you mean carrier switch? you should still be able to carrier switch long as theyre on the same BL versions
[Samsung Galaxy Note 8 Guides, News, & Discussion] joshpaynee:
Blows very much lol

---------- Post added at 04:58 PM ---------- Previous post was at 04:57 PM ----------

Every time I try nothing work in Odin I get a model mismatch

---------- Post added at 04:59 PM ---------- Previous post was at 04:58 PM ----------

Pretty sure boot loader has been changed
[Samsung Galaxy Note 8 Guides, News, & Discussion] joshpaynee:
How did you end getting it back to xaa the files won't work in Odin for me
[Samsung Galaxy Note 8 Guides, News, & Discussion] joshpaynee:
Any ideas on me getting back to att nothing I load in Odin will pass any help thanks in advance
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
Did a full factory reset then I used the other Odin and all the XAA files.
[Samsung Galaxy Note 8 Guides, News, & Discussion] joshpaynee:
I wish that worked for me lol this update really got me stuck
[Samsung Galaxy Note 8 Guides, News, & Discussion] BlueFox721:
Try different Odin versions and/or switching carrier guide to change code to ATT
[Samsung Galaxy Note 8 Guides, News, & Discussion] BlueFox721:
To get full xaa...switching carrier guide to change code to XAA without SIM in and flash XAA firmware
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
Yep, worked just fine. Now I'm getting a 81 meg software update to QI5 which I'm assuming will prevent us from switching firmwares.
[Samsung Galaxy Note 8 Guides, News, & Discussion] borijess:
Right now I have an Carrier unlocked running the ATT firmware. So if I flash back to unlocked carrier firmware. There is an update waiting for us? What odin do i use to flash back to stock XAA unlocked carrier firmware?
[Samsung Galaxy Note 8 Guides, News, & Discussion] drlepore:
I wouldn't take the update. Tried every combination I could think of to carrier switch my Sprint Note 8 or to XAA....everything fails.
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
I used the PrinseComsy version, worked 1st time no errors.

---------- Post added at 12:59 PM ---------- Previous post was at 12:56 PM ----------

It's back to the original firmware that it came with and is supposed to have on it, and I'm OK with that as I plan on selling it to get the ATT model so I can enjoy the VOLTE and other features Samsung doesn't tell you about if you buy the unlocked version.
[Samsung Galaxy Note 8 Guides, News, & Discussion] borijess:
That 81mg is a small update. Didn't the carriers update was larger?
[Samsung Galaxy Note 8 Guides, News, & Discussion] black96ss:
I thought you couldn't get OTAs if you flashed different firmwares because the original CSC wouldn't match up. Q15 is a safe update. QJA is the update you want to avoid. I used to Odin to flash the QJ9 Files minus the BL so I could revert back. So I'm running the lastest firmare and I can still go back. the BL is what keeps you from reverting not the firmware itself.
[Samsung Galaxy Note 8 Guides, News, & Discussion] joshpaynee:
Think there will be a bootloader downgrade ?
[Samsung Galaxy Note 8 Guides, News, & Discussion] gottria:
Thank you sir, updating now.
[Samsung Galaxy Note 8 Guides, News, & Discussion] borijess:
When I flash back to the XAA unlocked carrier firmware. Is it ok to flash the original stock that phone came with? Then let it update OTA the newest firmware?