US customers have been waiting quite a bit for their unlocked Galaxy S7 to get updated to Oreo, but finally there it is. Firmware versions available are G930UUEU4CRG2 for the Galaxy S7 and G935UUEU4CRG2 for the Galaxy S7 edge. The update is rolling out over-the-air as we speak, so if it is not available for you now, it should be soon.