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

[JeffATL]

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?

 

[warriorvibhu]

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]

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 :

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

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 :)

forum.xda-developers.com

 

[warriorvibhu]

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 :

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

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 :)

forum.xda-developers.com

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]

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]

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.

 

[muzhik]

flashed tmob DUH4 yesterday from U1 (DUH3), no issues.. see my post

 

[warriorvibhu]

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.

 

[rjcf82]

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]

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]

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]

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]

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.

 

[waninoko]

You should get OTA and it would be carrier path OTA.

Awesome! No issue with using the HOME CSC?

 

[samuel rodrigues]

Hello. I am buying the n986u1 in brazilian, and I intend to do this process to active esim, but like know if it will work in brazilian, or will I need a american SIM?

 

[Sword Fish]

Oops, replied to wrong thread

 

[Ducter]

Hello. I am buying the n986u1 in brazilian, and I intend to do this process to active esim, but like know if it will work in brazilian, or will I need a american SIM?

Little late and I can't say for certain but I'd believe it to work fine now. The sim requirement was for converting to the T-Mobile firmware, they've since released it officially in the beta that works for the U1.

 

[JeffATL]

Is stable released for U1 Android 12?
I flashed TMB U to get dual sim, now that its avail is it worth it to switch back?

 

[warriorvibhu]

Is stable released for U1 Android 12?
I flashed TMB U to get dual sim, now that its avail is it worth it to switch back?

Stable is not released yet for U1 (Unlocked devices).
Personal opinion if you bought your device unlocked U1 then totally worth it to flash back to Unlocked firmware. I am using that on mine and using esim and really like the fact that I don't have bloatware.

 

[JeffATL]

Stable is not released yet for U1 (Unlocked devices).
Personal opinion if you bought your device unlocked U1 then totally worth it to flash back to Unlocked firmware. I am using that on mine and using esim and really like the fact that I don't have bloatware.

I bought mine unlocked U1. Are you using beta? I'm wondering if I will have any difficulty switching back and if I can keep data. I had a lot of difficulty getting the CSC to stick when switching to TMB , I had to do soe roundabout method requiring multiple flashes