[Samsung Galaxy Note 20 Ultra ROMs, Kernels, Recove] alpha.83:
get vbmeta from telegram - I'm attaching it here, but if I'm asked by the dev to remove it I'll comply.

Below I pasted the steps I used to move from latest clean, unrooted stock (N986BXXSAHXD1 - polish, XEO) to Vulcan (links are guides I followed):

1. Rooting - magisk:

https://xdaforums.com/t/guide-how-to-root-n20.4147023/

Instructions for stock non rooted ROM!

- Use either samfirm.js, Frija, or Samloader to download the latest firmware zip of your device directly from Samsung servers.

- Flash it with Odin,

- Unzip the firmware and copy the AP tar file to your device. It is normally named as AP_[device_model_sw_ver].tar.md5

- Install Magisk apk

- Press the Install button in the Magisk card

- Choose “Select and Patch a File” in method, and select the AP tar file

- When done, copy patched file to PC

- Reboot to download mode. Open Odin on your PC, and flash magisk_patched.tar as AP, together with BL, CP, and CSC (NOT HOME_CSC because we want to wipe data) from the original firmware.

- Your device should reboot automatically once Odin finished flashing (to samsung menu with factory reset option). Agree to do a factory reset if asked.

- Install the Magisk app you’ve already downloaded above and launch the app. It should show a dialog asking for additional setup.

- Let the app do its job and automatically reboot the device. Voila!

2. Recovery - TWRP:

https://xdaforums.com/t/recovery-of...-galaxy-note-20-note-20-ultra-exynos.4441695/

Odin (Windows)

Prerequisites: Samsung USB drivers, Odin v3.14.1

If you already have the bootloader unlocked you can skip to step 6.

- Make sure OEM Unlock is ON in developer settings;

- Turn off the phone;

- Use vol up + vol down + usb cable plugged to a pc to start the phone in download mode, short press vol up to confirm you want to go to download mode;

- * If by any chance you see RMM state=Prenormal or KG state=Prenormal, redo from step 5!

- Download appropriate TWRP .tar file according to your device

https://twrp.me/samsung/samsunggalaxynote20ultra.html

- Download AVB disabled vbmeta .tar

- Open Odin v3.14.1 and place the downloaded TWRP .tar file in AP tab [twrp-3.7.0_11-0-c2s.img.tar], downloaded vbmeta.tar file [vbmeta.tar - from telegram.tar] in CP tab and click

- Start - once you press start grab the phone and press vol up + power to force it boot straight in TWRP after flashing

!! Only if coming from full stock (magisk patched) firmware

- In TWRP home screen press wipe - format data - yes. DO NOT REBOOT IF INSTALLING VULCAN!

#### Only if you'd like to stay on stock - no Vulcan

#### reboot to recovery again

#### Download and flash multidisabler-samsung-3.* zip to disable security and encryption.

3. Vulcan rom:

https://xdaforums.com/t/vulcan-rom-one-ui-6-port.4658874/#post-89368788

- After formatting data, navigate back to the TWRP home screen. Select "Reboot" and then "Recovery"

- Flash Vulcan ROM:

- Transfer the downloaded Vulcan ROM zip file to your device.

- In TWRP, navigate to the "Install" section and locate the ROM zip file. Select it and proceed with the flashing process.

4. Post-installation Setup N986B Only - [TBH I first downloaded vulcan rom update V1.1 and vulcan updater V2.0 and flashed them after last step in #3]:

- Once the ROM installation is complete, reboot your device.

- Upon booting into the newly installed ROM, navigate to Settings > Software Update. Here, install any available tweaks or updates to enhance your experience as per your preferences.

5. Bonus - enabling magisk/zygisk:

- After booting to system install magisk apk and open it. It'll ask to reboot - do it,

- Open magisk again, gear icon (upper right corner), switch "zygisk" to ON. Exit settings,

- Go to modules (lower right corner), "install from storage", choose lsposed, reboot,

- Profit! (? ;])

Attached:

- TWRP from the official site (link above),

- vbmeta.tar - from the dev's telegram,

- latest magisk,

- latest lsposed