Hello @Clovis, Welcome to the /e/ users forum.
https://samfw.com/firmware/SM-G960F (samsungOS a10)
Install /e/OS on a Samsung Galaxy S9 - “starlte” (/e/OS a12, /e/OS a13)
[UNOFFICIAL BUILD] WIP! Samsung Galaxy S9 (starlte) / S9+ (star2lte) / Note 9 (crownlte) for /e/OS-a15 3.1.x (/e/OS a15)
[HOWTO] Upgrade my /e/OS to major Android version without loosing /data
here i don’t understand your question.
can you precise what build are you talking about.