AT&T Note 8 - purchased directly from AT&T
Stock - no changes/modifications
Baseband Version: N950USQU4CRD7
Build number: R16NW.N950USQU4CRD7
Android Security Patch: April 1, 2018
Looking at AT&T's updated history logs, my Note 8 seems to be stuck with the last update being the May 15, 2018...