Have a look at Pre-installed S7: Nougat or Oreo?
My understanding is that
- nougat will stay at 0.11-n-2020083170819 (no more updates)
- it is not possible to upgrade from Nougat to Oreo through OTA (Parameters - System Updates), it must be done manually.
I went trough the process described there: (“Update must be done manually” section) [HOWTO] Update /e/
My phone is a refurbished S7 from eShop and everything is fine so far.
I downloaded the build at https://images.ecloud.global/dev/herolte/e-0.11-o-2020082870470-dev-herolte.zip straight on the phone.
Since then, I have had to make subsequent update manually …
See https://gitlab.e.foundation/e/backlog/-/issues/209
For the time being, OTA update is broken.
Good luck!