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

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shwQi

New member
May 31, 2022
4
0
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
Hi, I'd like to thank you so much for this as i wasn't able to update my Samsung galaxy note 20 ultra U to android 12 wirelessly but I did from Odin and it was my first time to do such a thing but it worked , just a question cause i really afraid to do the unblock by changing the S/N from U to U1 this device i have is ATT basedband and i don't know what version i have of the boatloader but i think it's version 2 can i proceed to flash the u1 version or it will be a risk on my device and thanks in advance
 

warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,494
376
Somewhere Amazing
HTC One (m7)
LG V10
Hi, I'd like to thank you so much for this as i wasn't able to update my Samsung galaxy note 20 ultra U to android 12 wirelessly but I did from Odin and it was my first time to do such a thing but it worked , just a question cause i really afraid to do the unblock by changing the S/N from U to U1 this device i have is ATT basedband and i don't know what version i have of the boatloader but i think it's version 2 can i proceed to flash the u1 version or it will be a risk on my device and thanks in advance
Your device will be fine, also I advise flashing same bootloader version as your current one. You can check your bootloader version in settings - - about phone - - software info.. Just look at your baseband version and the 4th number from right is your bootloader... See the attached pic... Bootloader version is 2.. Also don't get confused by the version as this is a screenshot from S22
Screenshot_20220606-072554_Settings.jpg
 

shwQi

New member
May 31, 2022
4
0
Your device will be fine, also I advise flashing same bootloader version as your current one. You can check your bootloader version in settings - - about phone - - software info.. Just look at your baseband version and the 4th number from right is your bootloader... See the attached pic... Bootloader version is 2.. Also don't get confused by the version as this is a screenshot from S22View attachment 5631485
thank you so much i did it with Odin and it has been unlocked i think! , actually i don't know if it has completely unlocked or this is just a custom Room and the device itself is still locked for ATT but the good thing is i received about 4 updates over the WIFI and it wasn't before my phone was stucked at android 11 with one ui 3.5 and now it has uploaded to android 12 with one ui 4.1
am I going to receive the updates normally now ? 😅
 

warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,494
376
Somewhere Amazing
HTC One (m7)
LG V10
thank you so much i did it with Odin and it has been unlocked i think! , actually i don't know if it has completely unlocked or this is just a custom Room and the device itself is still locked for ATT but the good thing is i received about 4 updates over the WIFI and it wasn't before my phone was stucked at android 11 with one ui 3.5 and now it has uploaded to android 12 with one ui 4.1
am I going to receive the updates normally now ? 😅
Yes you should receive updates normally now. For faster updates I always use Odin :)
 

warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,494
376
Somewhere Amazing
HTC One (m7)
LG V10
Hi, i still didn't get September update or October is it normal i i have a problem and need to do something from my side
I haven't had those on my T-Mobile note 20 ultra .. you can always check Frija and see what are the latest updates released. Since there is none released how will you get it. .. I think that Samsung has been a little delayed in this case.
 

shwQi

New member
May 31, 2022
4
0
I haven't had those on my T-Mobile note 20 ultra .. you can always check Frija and see what are the latest updates released. Since there is none released how will you get it. .. I think that Samsung has been a little delayed in this case.
my phone was ATT locked but i think it should be unlocked after using one of those unlocked firmwares i think and i actually after booting up the unlocked firmware i think for venom i received like 6 or 8 updates a in the same time 😂
i just was worrying about not getting the rest of the updates but fortunately i received September update this day a bit weird but I'm fine with it 😅
btw, I'm thinking of upgrading to fold 2 i hope i don't face any of those issues
 

warriorvibhu

Inactive Recognized Developer
Aug 28, 2007
1,494
376
Somewhere Amazing
HTC One (m7)
LG V10
my phone was ATT locked but i think it should be unlocked after using one of those unlocked firmwares i think and i actually after booting up the unlocked firmware i think for venom i received like 6 or 8 updates a in the same time 😂
i just was worrying about not getting the rest of the updates but fortunately i received September update this day a bit weird but I'm fine with it 😅
btw, I'm thinking of upgrading to fold 2 i hope i don't face any of those issues
I am on unlocked firmware too and just received September security patch.
Screenshot_20221011-180416_Software update.jpg
 
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JeffATL

Senior Member
Oct 10, 2009
851
78
I originally went from U1 to TMB U for eSim capability. Thinking of going back since eSim has been available across the board. Have a few questions first to double check
1. I am using Visible on VZW network as my primary carrier, will going back to U1 from TMB U affect band availability and improve service or no effect?
2. Is XAA the correct CSC to put in Frija? The latest firmware for U1 I am seeing is N986U1UES3FVI7/N986U1OYM3FVI7/N986U1UES3FVI7. My current baseband version is N986USQS3FV17,

All I should need to do is use modded Odin and use Home CSC to hopefully keep my data?
 

JeffATL

Senior Member
Oct 10, 2009
851
78
So anyway, I tried to return to XAA from TMB and somewhat failed. My phone model does say SM-N986U1 now however the Service Provider Software Version says TMB/TMB/TMB/XAA

Originally when I converted to TMB I had to do some crazy stuff where I had to flash DUE1 U firmare first, then flash the U1 CSC of DUE1 and then flash the TMB latest at the time which I think was DUH4 or something....

Anyway, I am trading in phone to Samsung. I hope they dont reject it because of CSC/software version - phone is in great condition
 

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  • 8
    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.