Can I flash anything on stock?

[Mecenas91]

Hey.

I have a G955F version. I do not know what was the full version number (like ACG5J) before. I only know it is European.

Question is - can I flash any other European stock ROM via Odin (like, for example, AXJ6G) or do I need to flash the exact same version that my phone had before to avoid hard bricking it?

I tried TWRP, no luck, stuck on boot screen with Glaxy S8+ powered by Android. Need to roll back to stock I guess. Just wanna ask this question to avoid hard brick.

Thanks in advance,
Tom