Upgrading from Kodi v20.2 to Kodi v21 (Omega) using Flatpak?



Is there are way of upgrading from Kodi v20.2 to Kodi v21 (Omega) without using Flatpak?
If not, how would I modify the LightDM.conf file to automatically run the new KODI 21.0 with the existing KODI profile.

Using this setup I am able to autoboot Kodi 20.2 but I am unsure how to modify this to work with the new upgrade.

This is my setup…

add-apt-repository -y ppa:team-xbmc/ppa
apt-get -y update
apt-get -y upgrade
apt-get -y install lightdm
apt-get -y install kodi
apt-get -y install –install-suggests kodi
apt-get -y install kodi-inputstream-adaptive
apt-get -y install libbluray-bdj

## Creating KODI Profile for autoboot (without password)
adduser –disabled-password –disabled-login –gecos “” kodi
usermod -a -G cdrom,audio,render,video,plugdev,netdev,users,dialout,dip,input kodi
echo [Seat:*]>/etc/lightdm/lightdm.conf
echo autologin-user=kodi>>/etc/lightdm/lightdm.conf
echo autologin-session=kodi>>/etc/lightdm/lightdm.conf

Thank you…