SM-950U
R16NW.N950USQS5CRL1
But... I don't have any confidence in my ability to do this with odin. I'm not techhie. The youtube links are confusing. I think I'll just live with 8.0.
Thanks for responding though. I appreciate it.
Smart Switch says I have latest software.
SM-N950U
Android 8.0
Your device software is up to date: RL1(ATT)
I don't know anything about flashing a phone.