[Samsung Galaxy Note 9 (Exynos) ROMs, Kernels, Reco] jult:
Yes, and while you're at it; It's rarely written aptly without mistakes, so here we go, for the Windows users:

- Download SAMSUNG_USB_Driver_for_Mobile_Phones.zip from https://developer.samsung.com/galaxy/others/android-usb-driver-for-windows

unpack, run the exe and install.

- Download Odin 3.13.1 (or newer) from https://techbeasts.com/download-odin-for-samsung-galaxy-all-versions/

and unpack it in a folder you can find later.

- Download Team Win Recovery Project for CrownLTE from https://xdaforums.com/galaxy-note-9/development/recovery-twrp-galaxy-note-9-exynos-t3833933

and put the TWRP*.tar.md5 file in the folder where Odin*.exe is

- Download the latest BootLoader file, watch out for the matching characters in the name.

- Download the latest Modem file, watch out for the matching characters in the name.

- Make sure you have back-ups of your valuable data and keys stored outside of your internal Samsung storage, on an external micro-sdcard or remote server, or cloud option. Back up your DCIM folder and other data you've stored on your device. Check the chat back-up options within WhatsApp (store it at Google if you trust them with it), and also do backup inside the Signal app if you use that. If you use Titanium Backup make sure you don't have your back-up directory on internal storage, make a copy elsewhere, store it on Google Drive, or use Google Backup to have your apps and settings up there before you switch roms.

- Enable Developer Options (Settings > About phone > Software information - Tap 7 times on Build number to activate the Developer options at the bottom of the Settings menu)

- Under Settings > Biometrics and security switch OFF [ Google Play Protect ] (apart from the open holes in their security setup, you'll see Google shows if an app is 'Verified in the Playstore' anyway whenever you install a new app..)

- Under the Settings > Developer options;

switch off [ Auto update system ]

switch on [ USB debugging ]

switch off [ Verify apps via USB ]

switch on [ OEM unlock ]

If you haven't rooted your Note before it will prompt you this will Factory Reset the device. Let it do this.

On your PC fire up the Odin*.exe you've downloaded earlier, then in Odin under "Options" untag "Auto reboot". Don't connect your USB cable to your phone just yet !

Put your Note in 'Download mode'. To achieve that state follow this carefully, you have to perform near acrobatic stuff, so be careful not to drop your phone:

- Power down your phone. Wait a second.

While keeping both [Volume down] + [Bixby] buttons pressed,

put in your USB cable with Odin running on your PC

(putting in the cable powers up the phone),

the phone boots with a light-blue screen. Release the buttons, and then

press [Volume up] to allow Downloading.

Odin will tell you it [Added!] your device.

In Odin click on [ AP ] and select the TWRP tar.md5 file, then click [ Start ]

Check if TWRP recovery was successfully flashed onto your Note, Odin will say "Passed!"

Patch the BL and Modem files using Odin (as mentioned in the post above), and do it *before* you update the ROM.

Then boot with TWRP recovery, in order to do so, again, some acrobatics are required:

- Disconnect the USB cable from the phone,

hold [Vol down] + [Power] buttons until it powers down,

but don't let go off the [Power] button! It has to remain pressed.

As soon as the screen goes black let go of the [Vol down] and immediately

press both [Vol Up] + [Bixby] buttons (while [Power] remains pressed)

this will make it boot into the great TWRP.

or, if you've already accidentally booted:

- Press [Power] button, press and confirm (Restart) on screen,

while it's showing the shutdown animation press the [Power] button,

keep it pressed! Immediately after the screen goes dark

press [Vol Up] + [Bixby] buttons. It should then boot into TWRP.

- In TWRP swipe right to allow modification. In the main TWRP screen, Select WIPE - Then FORMAT DATA - You need to type 'yes' to perform the wipe. This will erase all data including Internal Storage from your device. This part is required so the /data partition is no longer encrypted. After the format completes, go back to the main TWRP screen and click Reboot and then 'Recovery', This will reboot to TWRP again.

- Connect your USB cable if it is no longer connected. After your device booted into TWRP again on your PC you should see "omni-crownlte" and under that [Internal storage]. Upload your ROM zip into the root of your device's internal storage.

Now flash as described by the rom dev.