[SOLVED] Can i downgrade my Samsung a5 2017 Oreo back to Nougat?

[Shendelzare]

I have updated software 1 night before i updated last security patch( i updated phone 4 days ago) which came in on august 1st and it says that the current version is A520FXXSBCSH4/A520FOJVBCSF1/A520FXXSBCSG2 i was trying to find 7.0 Nougat version of some of these firmwares but the only versions i found were Oreo 8.0.When i had 7.0 Nougat installed was this firmware version " A520FXXSBCSH4/A520FOJVBCSF1/A520FXXSBCSG2" same like this or back then were different these? i am asking because i am confused about which firmware i need for ODIN

 

[Alabalcho]

I have used this site to download Samsung firmware files. It was quite a while ago, I don't know what they host now.