How to go back to original stock rom

[AC Question]

I have new samsung galaxy j510fn, when i turned it on i missclick to update the android to latest version(J510FNXXU2AQD2).
I didnt want this new version.
What i did: i downloaded the stock original rom for this phone(J510FNXXU1APCA), but when i try to downgrade it with odin it says that the bootloader is older and i cant install older bootloader.
Is there anyway to disable this restriction and be able to install old bootloader?
I think if this restriction is gone the rest process of uploading the older android will be just fine.
Thanks for your time !

 

[Mooncatt]

Typically no, you can't roll back system updates, nor can you avoid them without doing some deep level work. There may be ways to do what you want, but it's one of those things that's very phone specific (I.e. A different method based on which carrier you're on, even if it's the same phone) and can brick it if you mess up. This kind of stuff is typically beyond the skill level of the members here, myself included.

I'm generally not a fan of updates because they tend to break functions I use, but they are an evil we have to deal with. Calling them necessary is debatable. Lol