Samsung S9 upgrade path

/e/OS Devices Samsung
4

https://samfw.com/firmware/SM-G960F
If your device already have latest Samsung Software available (android 10) installed as a base, and a custom-recovery installed, you can boot to recovery mode, and freely install :

e-1.7-q-stable https://images.ecloud.global/stable/starlte,
or
e-1.7-q-dev https://images.ecloud.global/dev/starlte.

OR
simply accept the e-1.7-q-dev update proposed by the system updater

There is no upgrade yet,