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[Guide] - eSim Firmware Flash/ Odin Upgrade/ Flashing and N986U to N986U1 & Vice Versa

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JeffATL

Senior Member
Oct 10, 2009
831
71
So it worked and the phone appears to be working great, however I noticed that my service provider info is now listed as

TMB/TMB,TMB/XAA

Is that normal or OK?
Can you post your exact steps, with sim removal and specific roms?
I am stuck. I tried flashing a bunch of times yesterday on a new N20Ultra Unlocked but I cant get away from XAA/XAA/XAA/XAA. I tried with Userdata, without . I have T-Mobile Sim On Connect plan.

LTE not currently working

Also is your Note new? I am wondering if they change anything

I must have flashed 20 times without success. Once you enter intitial setup if T& C is with Samsung instead of T-Mobile does that indicate failure?
 
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warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,432
336
Somewhere Amazing
HTC One (m7)
LG V10
Can you post your exact steps, with sim removal and specific roms?
I am stuck. I tried flashing a bunch of times yesterday on a new N20Ultra Unlocked but I cant get away from XAA/XAA/XAA/XAA. I tried with Userdata, without . I have T-Mobile Sim On Connect plan.

LTE not currently working

Also is your Note new? I am wondering if they change anything

I must have flashed 20 times without success. Once you enter intitial setup if T& C is with Samsung instead of T-Mobile does that indicate failure?
Did you follow everything correctly ? Did you use the patched Odin provided here in the first post ? from what i have seen it is pretty easy and seamless unless you are doing something wrong. May be your are flashing wrong ROM. Can you hare details, what ROM version you downloaded and what Odin you used.
 

JeffATL

Senior Member
Oct 10, 2009
831
71
Did you follow everything correctly ? Did you use the patched Odin provided here in the first post ? from what i have seen it is pretty easy and seamless unless you are doing something wrong. May be your are flashing wrong ROM. Can you hare details, what ROM version you downloaded and what Odin you used.
Thanks. I was using modded Odin. I tried both 1.3 and 1.4 I ended up getting it to work finally. This was my procedure and the only procedure that worked for me :
 
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warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,432
336
Somewhere Amazing
HTC One (m7)
LG V10
Thanks. I was using modded Odin. I tried both 1.3 and 1.4 I ended up getting it to work finally. This was my procedure and the only procedure that worked for me :
Surprising, well i am glad you got it working but there is too much going on there. I have gone from U to U1 back and forth without any hassle not sure whats going on there. I usually flash without the sim inserted.
 

JeffATL

Senior Member
Oct 10, 2009
831
71
Surprising, well i am glad you got it working but there is too much going on there. I have gone from U to U1 back and forth without any hassle not sure whats going on there. I usually flash without the sim inserted.
Have you been doing this with the latest DUH4 rom? Also, is it possible that they changed something in phones that were purchased more recently? There are several threads concerning the same topic and there are a few others also posting being stuck on XAA.
 

warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,432
336
Somewhere Amazing
HTC One (m7)
LG V10
Have you been doing this with the latest DUH4 rom? Also, is it possible that they changed something in phones that were purchased more recently? There are several threads concerning the same topic and there are a few others also posting being stuck on XAA.
Hmm I have done it on DUH3 on U1 to Latest Tmob U and back. Only change I know is the bootloader version change. May be there is something, haven't had a chance to investigate.
 

rjcf82

New member
Apr 11, 2020
3
0
Hello everyone,
Great thread. It just doesn't seem to be clear if the t-mobile sim card is necessary. My phone must be carrier locked (bell, canada), but it's ok because I want to use the esim feature with 2 numbers from same carrier.
Would following this post work for me?
Thanks
 

tommytep

Member
Jul 13, 2021
12
1
Hello everyone,
Great thread. It just doesn't seem to be clear if the t-mobile sim card is necessary. My phone must be carrier locked (bell, canada), but it's ok because I want to use the esim feature with 2 numbers from same carrier.
Would following this post work for me?
Thanks
mine doesnt work, the esim still greyed out. i dont have T-mobile simcard. I think it works on old firware, especially if you're still on Android 10 or early 11. Hope beta Android 12 would make it for esim fan.
 

warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,432
336
Somewhere Amazing
HTC One (m7)
LG V10
mine doesnt work, the esim still greyed out. i dont have T-mobile simcard. I think it works on old firware, especially if you're still on Android 10 or early 11. Hope beta Android 12 would make it for esim fan.
It works on Android 11, however if it works without t-mobile sim or not I can't check. I suggest use t-mobile sim once the feature is activated get back to using what you have.
 

waninoko

Member
Nov 17, 2021
5
0
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?
 

warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,432
336
Somewhere Amazing
HTC One (m7)
LG V10
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?
You should get OTA and it would be carrier path OTA.
 
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  • 1
    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?
    You should get OTA and it would be carrier path OTA.
  • 5
    WARNING - Samsung has upgraded to Bootloader 2, if you are on bootloader 2 you can not flash U to U1 or U1 to U without losing data until a solution is found - Instructions are updated to get eSIM
    INTRODUCTION - Firstly sorry for posting this as this is common knowledge for many. I still see so many people asking the same questions again and again and i do want to help so decided to write a guide.
    If you have Odin Flashing questions please ask here. I have converted a device from U to U1 (just for fun) so i know this works, many other users have confirmed this too.
    SECTION1

    Pre-Requisites - PC / Laptop, USB Cable, Phone
    Switch on USB Debugging from Developer options. To turn on developer options go to Settings>>About Phone>>Software Information>> Then tap the build number 7 times - Developer options will appear at the bottom of Settings Menu.

    HOW TO - N986U to N986U1 and or Flash ATID or Flash Any Odin compatible ROM
    1. If you want to flash or update to One UI 3 Beta then Download the ATID Firmware here. (This point is old when people were on Android 10 not relevant now)

    1. For changing Carrier locked device to Unlocked Firmware (N986U to N986U1) Download the firmware for U1 from OTA Thread or by using Frija
    OR​
    1. For changing unlocked device to Carrier locked Firmware (N986U1 to N986U) Download the firmware for U from OTA Thread or by using Frija - This is usually being done to get eSIM Capability on your phone

    If you are Flashing One UI 3 Stable download the appropriate firmware. (This point is old when people were on Android 10 not relevant now)

    There are many resources for downloading firmware, there is a thread in the N20 Ultra forums, there are tools like Frija and SamFW and more, then there are various websites. Where you are downloading from is your outlook just ensure you download Odin compatible ROM.

    2. Download Patched Odin here
    3. Unpack/Unzip what you downloaded in Step 2 (Odin Compatible ROM) and put in a folder. Lets call the folder "Flash"
    4. Run Odin, click on BL, Browse to the "Flash" folder, add BL file from there, Do the same for AP (click on AP, Add AP file, this will take some time), Same for CP (click on CP, Add CP file)

    NOTE ATTENTION CAREFUL To get eSIM Capability on your phone if you are on bootloader version 2 please see step 5a and Skip Step 5
    5 . Click on CSC, Add the file with the name starting with Home_CSC). If you use Home_CSC your phone will not get formatted and data will remain Intact
    USERDATA Stays empty.
    5a. Do the same for CSC (click on CSC, Add the file with the name starting with CSC. This will format your phone and your phone will factory reset. You will lose your data and would need to setup your phone like it was new. USERDATA Stays empty.

    6. Now connect USB cable to your laptop (Only laptop and not the phone)>> Turn off your phone >> Press volume up and volume down keep them pressed and plug in the USB type C into your phone.
    7. You should be in download mode now, press volume up. In Odin you will see that phone is added.
    8. Press start in Odin. Wait for it to finish and let the phone restart (it will happen On its own).
    9. Done

    SECTION 2
    HOW TO - N986U or N986U1 Latest Security Patch or Firmware upgrade / downgrade
    1. Download the firmware for Corresponding device - For example if you are on SM-N986U1 then download for U1. If you are N986U locked to TMB, VZW, SPR etc etc download the firmware for U device and your Own CSC from OTA Thread or by using Frija or SamFirm tool.
    2. If downloaded using Frija or SamFirm Tool it will be in a compressed folder (ZIP). Extract the firmware files in a folder, lets call it "Flash"
    Follow the rest of the steps from Step 4 Above.
    SECTION 3
    Going from one carrier locked device to another one like from ATT to TMob - Use the same instructions as in SECTION1 - just download the appropriate firmware.

    FAQ
    Can I get E-Sim with this ?
    Yes, I have updated the instructions in this post.

    If you are doing this to get E-Sim capability that t-mobile just added
    here is a post from someone who converted their phone to T-Mobile version (Old Post can be ignored)


    WARNING - If for some reason you use ODIN to Flash back to Android 10 after being on Android 11, YOU WILL LOSE YOUR DATA
    This is not a guide for Downgrading by whole Android Iteration as in Going from Android X to Android (X-1) or Android (X-2) ____ Versions
    3
    flashed tmob DUH4 yesterday from U1 (DUH3), no issues.. see my post
    Thank you for writing that post, you reminded me that many people are now doing this to get eSIM, when I wrote this post the need was to get OneUI 3 Beta (Android 11). I have updated the first post for eSIM.
    3
    yp, same here. on TMB it has IED greyed out, sim manager missing and cannot connect to mobile data. Have to stop trying now after dozen of flash and wait for new workaround to be discovered.
    Was able convert U1 to TMob version yesterday and activated Tmobile esim with no issues. Firmware used was the one linked in the first post.

    2
    Another reason to switch to U1 firmware is the ability to get access to features that are disabled on carrier versions.
    I went to U1 firmware so I could enable "Call and text on other devices" and get rid off the carrier bloat.
    This is disabled on AT&T and Verizon versions... not sure about T-Mobile/Sprint devices.
    2
    I've been using the u1 version on my u from att after like a month and it's been working great. I also got the april security patch on the 1st so it's definitely being great.