Yeah, its missing. It only talks about Odin. As mentioned in by someone in the forum https://community.e.foundation/t/samsung-galaxy-a52s-5g-a52sxq-documentation-suggestions/63349/9 you need heimdall 2.1 from gimler which is crashing while building AUR package with error code “an error occured - cancel process”
I just wanted to give it a try to see how it works for me, but I think I stick to the original and give it a try someday again
Okay, I made it. So here is my solution under arch linux.