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[Guide] How to root N20 Ultra (N986B)(N9860)

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elmor0

Senior Member
Mar 20, 2009
627
103
Samsung Galaxy Note 20 Ultra
Why is rooting this device relatively complicated?
(I'm comparing to OP7T Pro & ROG phone 3 which I'm currently using).
BL unlocking was pretty straightforward for N9860.

Can we not just root by Magisk patched boot.img?
Or something Samsung-related that rooting has to be done as per OP instructions?
 

elmor0

Senior Member
Mar 20, 2009
627
103
Samsung Galaxy Note 20 Ultra
Need Root & TWRP help/ advice please. For N9860 (SnapDragon; starting with Android 11 BRI region FW).

- BL is unlocked (OEM unlocking toggled on + greyed out; USB debugging is enabled).
- Magisk patched "AP_[device_model_sw_ver].tar.md5" & flashed via Odin fine (Is this step still necessary in reference to post no. 337?).
- Odin flashed TWRP fine (I've tried TWRP as per Dr Ketan's link as well as alternatively mentalmuso's Note 20 Ultra TWRP version).

Problem: Unable to boot into (TWRP) recovery mode via VOL up + Power button combo as soon as I power-off from Download mode.
(I've tried several times both with USB cable left connected to PC & without connection).

It just keeps resulting in start-up screen with IMEI barcode @ bottom of screen & several message lines on top of screen e.g. FRP lock off; void x 01 etc.
I end up needing to Odin flash stock BL/AP/CP/CSC to get out of this hitch & start all over again......
 

elmor0

Senior Member
Mar 20, 2009
627
103
Samsung Galaxy Note 20 Ultra
And now my Internal storage shows total capacity 32 GB only!! (it is a 256 GB model; and no, it is not a fake device).
WTH!!
Did some partitions mess up.....?
=======================
Update: 256 GB storage back after stock FW Odin flash.
Still unable to install TWRP............
 
Last edited:

elmor0

Senior Member
Mar 20, 2009
627
103
Samsung Galaxy Note 20 Ultra
Some more clarifications please:
- Where does flashing vb_meta disabler fit into the rooting steps? (no mention of this in OP.)
- What file do I ODIN flash in the USERDATA field, if at all? (If I want TWRP recovery option.)
- Is ODIN flashing of Magisk patched [AP_.... _.tar] file needed? (was mentioned in OP but no longer mentioned in updated OP post #337.)
- Do I have to reboot @ each & every stage of rooting process steps?
 

elmor0

Senior Member
Mar 20, 2009
627
103
Samsung Galaxy Note 20 Ultra
Just to update. Finally managed to root & install TWRP!!!

Will add my 2 cents worth (some steps may be unnecessary/ repeated same as OP); but this is what worked for after several frustrating failed attempts following some of the guides).

Started with: N9860 stock FW (BRI) Android 11

[1]
Unlock Bootloader.
[2] Download correct stock FW --> extract 'AP..._.tar' --> Place this in phone's internal storage. Also place multidisabler.zip & latest Magisk.zip files onto phone's internal storage.
[3] Install & open Magisk app --> via (top) Magisk option, patch the above mentioned 'AP..._.tar' file --> place the Magisk patched 'AP..._.tar' file (from phone's Downloads folder) onto your PC.
[4] Boot phone into Download Mode via PC connection. Keep phone connected to PC from now on.
[5] In ODIN (auto re-boot always unselected) install vbmeta_disabler via AP option (link taken from Sac23's Note20 ultra ROM thread).
[6] Reboot phone to Download Mode again --> ODIN flash the Magisk patched 'AP..._.tar' from step 3 via AP option.
[7] Reboot phone to Download Mode again --> via AP option ODIN flash TWRP (c2q version via Mentalmuso).
[8] Reboot into TWRP (remember keep connected to PC) --> TWRP flash multidisabler.zip
[9] Format Data via TWRP (this does not delete phone's internal storage files).
[10] Reboot into TWRP again --> TWRP flash the Magisk.zip file from step 2.
[11] Reboot to System.
 

elmor0

Senior Member
Mar 20, 2009
627
103
Samsung Galaxy Note 20 Ultra
Important : Once you root device, it is highly recommended to immediately make EFS IMEI backup of device and keep it to safer place other than device itself.
.
I'm guessing this is via the TWRP back-up option for EFS? (Pardon my ignorance, but I don't see IMEI in TWRP options.....).

Does it have to be backed-up immediately after 1st time root? Or okay to back-up after Magisk/ EdXposed etc?

How & in what context can we then use this back-up?
 

bobbykurvar

New member
Dec 22, 2020
4
0
Hi, I followed this procedure and everything went fine till booting to recovery. I attached the recovery.img from twrp in userdata section of odin as instructed. The instruction provided was not working so I tried adb reboot recovery. Now I'm stuck at 'phone bootloader is unlocked press power key to continue." I tried holding the power key to restart and to put it into download mode but none of them are working. Its stuck in this screen for now. Can someone pls help
 

elmor0

Senior Member
Mar 20, 2009
627
103
Samsung Galaxy Note 20 Ultra
Hi, I followed this procedure and everything went fine till booting to recovery. I attached the recovery.img from twrp in userdata section of odin as instructed. The instruction provided was not working so I tried adb reboot recovery. Now I'm stuck at 'phone bootloader is unlocked press power key to continue." I tried holding the power key to restart and to put it into download mode but none of them are working. Its stuck in this screen for now. Can someone pls help
In download mode, start again with ODIN flashing of vbmeta, AP.tar, TWRP etc (1 by 1, all in AP option of ODIN - not USERDATA, and reboot into download mode @ every step until TWRP flashed - therefore phone needs to be connected to PC throughout the process).
 

bobbykurvar

New member
Dec 22, 2020
4
0
In download mode, start again with ODIN flashing of vbmeta, AP.tar, TWRP etc (1 by 1, all in AP option of ODIN - not USERDATA, and reboot into download mode @ every step until TWRP flashed - therefore phone needs to be connected to PC throughout the process).
Thank you for your response. I panicked and for the time being, I flashed stock files. I wasnt able to reach download mode from that orange state. So I waited till the battery dried up and then putting the phone into download mode worked. I had earlier downloaded stock files and then I flashed them all. when restarted it went to stock recovery and asked me to factory reset which I did and then it booted normally. I shall try to root it some other time. I'm a newbie such experiments.
 

madyinwhich

Member
Jan 27, 2013
18
8
Hi,

I have now rooted my Note 20 Ultra SM-N9860 successfully. But I have a problem with the galaxy wearable app. It is possible to pair the phone with the watch but without setting up the watch. Inside the left side panel I see the watch but no chance to connect with the watch. The wearable app seems to have no internet access as well.

Does have anybody else this issue? Is the a way to fix it? Thanks for any help in advance.
 

dr.ketan

Recognized Developer / Recognized Contributor
Hi,

I have now rooted my Note 20 Ultra SM-N9860 successfully. But I have a problem with the galaxy wearable app. It is possible to pair the phone with the watch but without setting up the watch. Inside the left side panel I see the watch but no chance to connect with the watch. The wearable app seems to have no internet access as well.

Does have anybody else this issue? Is the a way to fix it? Thanks for any help in advance.
Read my post here

 
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Calamityx1

Senior Member
Jun 6, 2013
81
1
Hello,

I've made this post on the TWRP thread but I haven't had any responses so I thought I'd try my luck here

I have the N986B Note 20 Ultra; I've flashed TWRP 3.5.2.

Odin flashes it just fine; decrypter and Magisk runs smoothly. But I reboot into system, it doesn't succeed--I'm just kick back into TWRP.

I have no idea why this is happening and I really would appreciate any kind of help available.
 

hamzanikoo

New member
Jun 3, 2021
1
0
i did everything as you said it only the twrp i cant download it the thread you linked doesnt have a working download link so i used another twrp recovrey img from another site and flashed it as you instructed tried to enter recovrey after the power off from dowload mode i missed so i booted normally found magisk did what you said reboot then gone to ian twrp magisk thread did that now i can only enter recovrey when getting out of download mode and the magisk master and multidisabler dont flash they give me errors :p im only rooting my device for some apps like youtube vanced..etc soo can i live without flashing the multidisabler and the rest ?
 

Threx71

Senior Member
Jan 1, 2016
63
12
I have the N985F which is LTE exynos variant, if I'm not mistaken it SHOULD have mostly the same firmware but I want to ask first, has anyone tried this method on this specific variant?
 

farou2

Senior Member
Need Help....
I went through all the step but I couldn't find the TWRP link because the link isn't working.. long story short.. someone sent me the link and I flashed both files.. Once Odin finished (Passed) I tried to get into the recovery screen but I cant.. my phone boots normally but I cant access the recovery screen. I even tried to flash the stock recovery same thing.
 

dr.ketan

Recognized Developer / Recognized Contributor
Need Help....
I went through all the step but I couldn't find the TWRP link because the link isn't working.. long story short.. someone sent me the link and I flashed both files.. Once Odin finished (Passed) I tried to get into the recovery screen but I cant.. my phone boots normally but I cant access the recovery screen. I even tried to flash the stock recovery same thing.
TWRP no more maintained on linked thread. You can find latest TWRP on my ROM thread donload page.
 
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  • 24
    Here is Patched kernel to root N986B Note20 Ultra (N986B_TH3)

    NOTICE :

    Before you move further, make clear that rooting device -
    - Your warranty will be void
    - Some of functions may not work on rooted device, some function may get back with un rooting, some may never.
    - All your data on device will be lost
    - Flashing custom binaries may brick (Usually soft but can be hard brick too) your device, so follow it on your own risk!

    If you are ready with condition, move further -


    A.Preparing Root files

    You need to patch file to flash using Odin to root device.
    1. Download stock firmware for your device (google search will give you many sites to download it) some common are e.g. Sammobile, Samfirmware tool)
    you need to download file according your region and model (Dial *#1234# will give you details of existing firmware, download accordingly)

    2. Once you finish download, extract files and keep all files on PC. From extracted files a file with name AP_[device_model_sw_ver].tar.md5 copy to your device.

    3.Download Latest Magisk Manager and Install to your device

    4.Open Magisk Manager - Magisk (first one) - Install - select to "Select and Patch file" - Navigate file you have copied to device (AP_[device_model_sw_ver].tar.md5)

    5.Magisk Manager will patch the whole firmware file and store the output to [Internal Storage]/Download/magisk_patched.tar

    6.Copy patched file magisk_patched.tar to Your PC - THIS IS FILE ONE YOU NEED TO FLASH, Now prepare second file.

    7.
    A.Patching Kernel : This is required only If you want to root device without installing custom recovery (TWRP). In case you want to root + have TWRP then skip this step and move to step B

    Open magisk_patched.tar with 7zip and extract/pull boot.img from tar - Copy boot.img to device and patch it using Magisk manager same as you patch AP file in step 4 - Now you will have Magisk_patched.img file in download folder - Copy that file to PC. Rename that magisk_patched.img to boot.img (Name must be exact same). Make sure your PC have 7-zip installed, If not get and install it. Rt click on boot.img and select 7zip - select "add to archive" - select archieve format as 'tar' - and name it Patched_Kernel (it will be like Patched_Kernal.tar). Don't keep space in name. This will create a Odin flashable patched kernel and This is FILE TWO YOU NEED TO FLASH

    B.Preparing TWRP :
    Download TWRP for your device from Here. Extract recovery.img from TWRP file you have downloaded. Make sure your PC have 7-zip installed, If not get and install it. Rt click on recovery.img and select 7zip - select "add to archive" - select archieve format as 'tar' - and name it TWRP_file (it will be like TWRP_file.tar). Don't keep space in name. This will create a Odin flashable patched kernel and This is FILE TWO YOU NEED TO FLASH

    If above link for TWRP not working/Updated :
    You may find latest TWRP ready to flash on my ROM thread download page.

    8.Download latest Odin (one is attached to end of this post) and extract to a folder on PC (I recommend on desktop)

    Now next step is to modification on device

    Unlocking Bootloader

    This is a basic step to root device. Go to settings - about phone - Software Information - tap multiple times on "Build number" - This will open developer option.
    Now in settings at the end, you will have new option "Developer options" - look for OEM unlocking - Enable it.

    (PS : If you don't see this option then you may need to wait up to 7 days or more to appear or may be on some operator you will get it never. Without this option you can not root your device, sorry!)

    Once you have enable OEM unlock option, switch off your device and reboot to download mode.
    To put device in download mode - Press Volume Up & then Press Volume Down (Keep holding both) and connect device to PC with USB cable
    When device start to download mode,long press volume up to unlock the bootloader. This will wipe your data and automatically reboot

    Now let finish setup and again enable developer options (as said above), and confirm that the OEM unlocking option exists and grayed out!
    If it is not then you can not root device!

    Once you see this option and greyed out, you are ready to flash custom binary and root your device

    Installation (Flashing) custom binaries

    1. Switch off the device and reboot to download mode (As said earlier) and select volume up to continue

    Open Odin as administrator (Odin attached to below this post)

    A.Click AP tab of Odin and navigate to magisk patched file (AP file that you have patched with magisk manager) (One you made in above Preparing files, STEP 6)
    B. Here this step, you needs to decide, you want to install TWRP or not.

    - In case you don't want TWRP - Click on UserData tab of Odin and navigate to Patched kernel (One you made in above Preparing files, STEP 7A)

    OR

    - In case you want TWRP then navigate to TWRP file (One you made in above Preparing files, STEP 7B)

    3.From Odin option - uncheck Auto Reboot option

    4.Now start flashing and wait till it finish. When you see a PASS sign on Odin, disconnect device.

    Factory reset

    After disconnecting device, keep holding Vol down + Side key to exit from download mode.
    Here is very important - when you see device reboot As soon as the screen turns off, immediately press Volume Up + Side Key to boot to recovery partition. continue pressing the volume up button until you see the recovery screen.

    In the stock recovery menu, use volume buttons to navigate through menus, and the power button to select the option. Select Wipe data/factory reset to wipe the data of the device.
    Select Reboot system now

    In case of TWRP, you needs to select WIPE tab - FORMAT DATA - You need to type "yes' to confirm - After this - select REBOOT - REBOOT to recovery - and you have to install two files 1.Magisk zip (2.MultiDisabler (You can get it from TWRP thread) After flashing both - reboot to system

    The device will automatically reboot for the first time it boots. This is completely normal and done by design.After the device is booted up, do the usual initial setup. You shall see Magisk Manager in your app drawer; if not, Download Magisk Manager and manually install the APK you downloaded and continue to the next step.

    Magisk Manager will ask to do additional setups. Let it do its job and the app will automatically reboot your device. (You must needed to connected to internet)


    Important : Once you root device, it is highly recommended to immediately make EFS IMEI backup of device and keep it to safer place other than device itself.








    .
    7
    Guys!
    Today couple of hrs ago received my N20 ultra
    Rooted it but unfortunately TWRP is not worked while I have tested

    Good news, I have already created (blindly without device) a Odin flashable ROM couple of days ago and just tested and working like a charm.

    Stay tuned!
    5
    Root N9860 TH1 base (Snapdragon)



    - Download N9860_TH1_Patched_boot_extract_this_first.zip and extract it.
    - Unlock Bootloader as shown in OP and make sure OEM lock turn greyed out
    - Reboot to Download mode
    - Straightway flash N9860_TH1_Patched_boot.tar.md5 (You have extracted above) with AP tab of Odin
    - Reboot to recovery and format data
    Reboot to system

    In case above method doesn't work then patch AP file of stock firmware and flash that AP file with AP tab and above downloaded and extracted file with USERDATA tab of Odin
    3
    Can we expect a Dr Ketan ROM for the Ultra? If you do you'll force me to buy a new Note 20 ultra. So please don't :p
    Lol!
    (Unfortunately :laugh: ) I have already made a test rom and eagerly waiting to test myself as soon as I receive device. (pre-booked already)
    3
    Root stable Android R (TL5) N986B

    Android R stable release out now.
    If anyone wants to root stable Android R for N986B, here is short instructions. I will update OP later with detail info.

    - Unlock bootloader
    - Reboot to download mode and flash TWRP with AP tab Thanks Ianmacd
    - Reboot to TWRP - Flash multidisabler attached here. Here is OP Thanks Ianmacd
    - Select wipe - Format data - type 'YES'
    - Reboot to recovery & Flash Magisk 21.1 or latest available
    Reboot to system
    If magisk manager not installed, Manually install apk (same link as above)