I was trying #1 for a new mac I bought second hand. These are the new ones I guess, because to enter in the recovery mode it's not with "Boot into recovery mode using command + R. ", but just boot and keep pressing the power button until it shows up.
regardless, when reaching step 2: "Disable internet connection on initial setup.", I don't seem to have that option. I just have an 'Activate Mac' screen that says to "Select a Wi-Fi network from the menu or attach a network cable to proceed". I don't have an option anywhere to proceed without a connection, I think. Any ideas?
Jonah