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Note 20 Ultra eSIM update is here!! (T-mobile USA)

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JeffATL

Senior Member
Oct 10, 2009
840
72
Thanks dadmi for all the help and suggestions and pointing to a thread where I found the start of solution buried in a single post by pimpmaneaton

After 30 flashes I am happy to report success!!!!! Could never get the TMO splash nor get XAA/XAA/XAA/XAA to change to anything else. I did try Aseras method, maybe the roms were not exactly the same but nothing got me off XAA until the below method


This was the post that worked (post #41), combined with a flash of latest TMobile rom afterwards

So I download a rom version where both the same last 4 letters exist for U and U1, DUE1 from https://forum.xda-developers.com/t/...re-for-n986u-and-n986u1.4143833/post-83222267 I also downloaded the latest T-Mobile firmware DUH4 from Frija

1. Using modded Odin, flashed TMB DUE1 using all 5, regular CSC, I think I used USERDATA too , not sure if that matters
2. Went through fast setup, still on xaa/xaa/xaa/xaa, 2nd imei greyed, no sim mgr, insert tmo sim, got service but no prompt to reboot
3. Powered off (I dont think I did a factory reset but I dont remember I have done this so many times) and rebooted to download mode. Flashed only CSC file from the U1 version of DUE1, all other Odin fields were blank
4. After flash, phone rebooted to recovery instead of setup, chose factory reset from the recovery menu
5. Still no TMO splash, went through fast setup, inserted TMO sim, now on tmb/tmb/xaa/xaa, 2nd sim still greyed, no sim card mgr, ota update does not work
6. Flashed DUH4 from Frija (did not factory reset), finally got TMoblie splash , and TMO T&C at end of setup. Inserted sim card. Rebooted. Now on TMB/TBMB/XAA/XAA - have sim card manager, 2nd imei not greyed - YAY - 🤑🍻🎉🎈

Note: I flashed DUH4 a bunch of times in a bunch of combinations, this was only time getting the TMO splash and TMB CSC in service provider - not sure if the specific DUE1 but thats what the pimpman posted so I followed it.

Now I have Visible unlimited as physical sim, $25 a month, and $15 Connect Plan on eSim as backup.
 
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Thanks dadmi for all the help and suggestions and pointing to a thread where I found the start of solution buried in a single post by pimpmaneaton

After 30 flashes I am happy to report success!!!!! Could never get the TMO splash nor get XAA/XAA/XAA/XAA to change to anything else. I did try Aseras method, maybe the roms were not exactly the same but nothing got me off XAA until the below method


This was the post that worked (post #41), combined with a flash of latest TMobile rom afterwards

So I download a rom version where both the same last 4 letters exist for U and U1, DUE1 from https://forum.xda-developers.com/t/...re-for-n986u-and-n986u1.4143833/post-83222267 I also downloaded the latest T-Mobile firmware DUH4 from Frija

1. Using modded Odin, flashed TMB DUE1 using all 5, regular CSC, I think I used USERDATA too , not sure if that matters
2. Went through fast setup, still on xaa/xaa/xaa/xaa, 2nd imei greyed, no sim mgr, insert tmo sim, got service but no prompt to reboot
3. Powered off (I dont think I did a factory reset but I dont remember I have done this so many times) and rebooted to download mode. Flashed only CSC file from the U1 version of DUE1, all other Odin fields were blank
4. After flash, phone rebooted to recovery instead of setup, chose factory reset from the recovery menu
5. Still no TMO splash, went through fast setup, inserted TMO sim, now on tmb/tmb/xaa/xaa, 2nd sim still greyed, no sim card mgr, ota update does not work
6. Flashed DUH4 from Frija (did not factory reset), finally got TMoblie splash , and TMO T&C at end of setup. Inserted sim card. Rebooted. Now on TMB/TBMB/XAA/XAA - have sim card manager, 2nd imei not greyed - YAY - 🤑🍻🎉🎈

Note: I flashed DUH4 a bunch of times in a bunch of combinations, this was only time getting the TMO splash and TMB CSC in service provider - not sure if the specific DUE1 but thats what the pimpman posted so I followed it.

Now I have Visible unlimited as physical sim, $25 a month, and $15 Connect Plan on eSim as backup.
Glad you got it working.
 

JeffATL

Senior Member
Oct 10, 2009
840
72
Anyone figure how to use TMobile Visual Voicemail when it is not the primary sim? When I start to the app it fails because it is using non-T-Mobile (sim 1) data
 
Just wanted to report as well that I've converted to TMO firmware to get eSIM. Got tired of waiting for Samsung to NEVER release esim for unlocked phones.

anyway.. used these instruction and latest tmobile firmware

5. Do the same for CSC (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

I did NOT select HOME-CSC, just CSC.. phone rebooted into bootloader after ODIN did it's thing. I did factory reset and reboot. All well, eSIM active.. no issues. (y)
 
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tommytep

Member
Jul 13, 2021
12
1
Thanks dadmi for all the help and suggestions and pointing to a thread where I found the start of solution buried in a single post by pimpmaneaton

After 30 flashes I am happy to report success!!!!! Could never get the TMO splash nor get XAA/XAA/XAA/XAA to change to anything else. I did try Aseras method, maybe the roms were not exactly the same but nothing got me off XAA until the below method


This was the post that worked (post #41), combined with a flash of latest TMobile rom afterwards

So I download a rom version where both the same last 4 letters exist for U and U1, DUE1 from https://forum.xda-developers.com/t/...re-for-n986u-and-n986u1.4143833/post-83222267 I also downloaded the latest T-Mobile firmware DUH4 from Frija

1. Using modded Odin, flashed TMB DUE1 using all 5, regular CSC, I think I used USERDATA too , not sure if that matters
2. Went through fast setup, still on xaa/xaa/xaa/xaa, 2nd imei greyed, no sim mgr, insert tmo sim, got service but no prompt to reboot
3. Powered off (I dont think I did a factory reset but I dont remember I have done this so many times) and rebooted to download mode. Flashed only CSC file from the U1 version of DUE1, all other Odin fields were blank
4. After flash, phone rebooted to recovery instead of setup, chose factory reset from the recovery menu
5. Still no TMO splash, went through fast setup, inserted TMO sim, now on tmb/tmb/xaa/xaa, 2nd sim still greyed, no sim card mgr, ota update does not work
6. Flashed DUH4 from Frija (did not factory reset), finally got TMoblie splash , and TMO T&C at end of setup. Inserted sim card. Rebooted. Now on TMB/TBMB/XAA/XAA - have sim card manager, 2nd imei not greyed - YAY - 🤑🍻🎉🎈

Note: I flashed DUH4 a bunch of times in a bunch of combinations, this was only time getting the TMO splash and TMB CSC in service provider - not sure if the specific DUE1 but thats what the pimpman posted so I followed it.

Now I have Visible unlimited as physical sim, $25 a month, and $15 Connect Plan on eSim as backup.
I gave up month ago since my phone got Black screen of death. Now back to this topic and glad that you're succeed at getting the esim work and i'm doing it one last time.

Urgent question:
i'm right now on the last step of flashing DUH4, which CSC did you flash at this step? the normal or the home_csc as on the 3rd step you did flash the CSC of the U1 already. Thanks and pls reply me asap.
 

tommytep

Member
Jul 13, 2021
12
1
normal csc, I didnt flash home_csc

before you flash DUH4 did you notice TMB in the Service Provider? (not all 4 but at least some)
I flashed the normal CSC and the phone boots to recovery. I chose not to factory reset and continue to boot. No TMB splash screen showed up and the esim is still greyout, Yet this time the phone gets connected to mobile network normally (other times it did not). One missing piece here i think is the physical TMB sim as i'm not living in the US so cannot get one.
 

JeffATL

Senior Member
Oct 10, 2009
840
72
I flashed the normal CSC and the phone boots to recovery. I chose not to factory reset and continue to boot. No TMB splash screen showed up and the esim is still greyout, Yet this time the phone gets connected to mobile network normally (other times it did not). One missing piece here i think is the physical TMB sim as i'm not living in the US so cannot get one.
Yeah - TMobile sim is needed I think

I flashed DUE1 then after I flashed DUE1 U1 CSC booted to recovery I factory reset

Then I flash DUH4 full rom without factory reset
 
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LukasVN

New member
Sep 24, 2021
4
1
Just wanted to report as well that I've converted to TMO firmware to get eSIM. Got tired of waiting for Samsung to NEVER release esim for unlocked phones.

anyway.. used these instruction and latest tmobile firmware



I did NOT select HOME-CSC, just CSC.. phone rebooted into bootloader after ODIN did it's thing. I did factory reset and reboot. All well, eSIM active.. no issues. (y)
My phone now has BL2 i think so can i follow your instruction to get eSIM?
Screenshot_20211015-213806_Settings.jpg
 

eng.abdul

Member
May 18, 2021
8
2
I can confirm that with the new official release of one UI 4.0 i got dual sim FINALLY

I'm outside the US with an unlocked Snapdragon processor phone

Current version: N986U1UES2EULI / N986U1OYM2EULI / N986U1UES2EULI
Security patch level: January 1, 2022

1642239117128.png Screenshot_20220115-123240_Settings.jpg
 
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  • 4
    Guys,

    FINALLY!!! Woohoo! We have eSIM support on Note 20 Ultra US Snapdragon version for T-mobile. There is an OTA you can download and then convert your physical SIM to eSIM :)
    4
    I registered just to say thanks and that I FINALLY got this to work coming from a SM-N986U1, XAA Unlocked, from samsung.
    It tried this and it failed so many times, or the esim IMEI was greyed out.

    Here's how I got it to work.

    Backup everything, you are gonna nuke the phone at least twice. Make Sure you are on U1 to start. Use Frija, get XAA CSC (U1) and TMB CSC (U)

    as of now that's (U1) N986U1UES2DUC1. Extract it to a folder. Download (U) N986USQU2DUC8, Extract it to a folder.

    Backup everything.
    Sign out of ALL accounts. You are going to lose it all.
    Remove SIM
    Factory Data reset. Nuke the device. At startup screen, Reboot, hold down volume down and power and turn it off.
    Hold Vol up and down, and plug in USB. Hit Vol up on dim screen to go to download.
    Using Odin 3.13B Patched, flash all 4 U1 ( N986U1UES2DUC1 even if you are on U1, do it ): BL,AP, CP, CSC ( NOT HOME_CSC ).

    Reboot. If it reboots to the red error screen, just choose reboot.

    When you get to setup, power off, hold down volume down and power and turn it off.
    Hold Vol up and down, and plug in USB. Hit Vol up on dim screen to go to download.
    Using Odin 3.13B Patched, flash all 4 U ( N986USQU2DUC8 ): BL,AP, CP, CSC ( NOT HOME_CSC ).

    Reboot. If it reboots to the red error screen, just choose reboot.

    You should see the Tmobile splash screen. Go through setup don't connect to wifi and just decline as much as possible. You should get a tmobile TOS and Service crap page. If yes, you are good. Finish setup and verify that both IMEI are available.

    (optional) Use ADB to clean up some of the crap..

    Install SIM, It will do a carrier update.
    Restore your data.

    Yay.
    2
    Does esim works with another carriers SIM as well?
    Yes, providing your phone is unlocked
    2
    yes. first round i did with 13.4 patched Odin, then again and again with 3.13.1patched as mentioned and follow exactly each step but still no sucess. Before flashing, my fone was on the lastest XAA june update. I even contacted T-Mobile to see if they can just unlock it for me but they ask for US citizent ID which i'm not.

    Update: the only thing that different from the guide is that i'm downloading the FW from https://samfw.com with XAA and TMB version other that Frija because i cannot get it to work. is that make something different?

    update 2: all the tutorial was all 2 or 3 months back and they mention first get back to U1 N986U1UES2DUC1 and then flash N986USQU2DUC8 over that one and I followed that process. Should I try with lastest FW update N986U1UES2DUE1? Havent try this one.
    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
    Will unlocked version of Note 20 Ultra get this update with eSim support on Tmobile?