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Odin error downgrading from Android 9 to 8

I have a Samsung Galaxy J7 Refine and I hate Android 9 on it. I keep trying to downgrade to Android 8 using Odin. I even tried an older version of Smart Switch with the emergency software recovery. 


Is there a tool other than Odin I can use to flash it to a lower version other than whatever it's complaining about?


I don't have logs. Other PC. I can try to get them.


Phone is Sprint SM-J737P -- Network locked -- currently active