

This command gives you the option to upgrade to the latest version of macOS that is compatible with your machine. The second is to hold down Option + Command + R. This option opens the standard version of Recovery Mode and lets you install the latest version of macOS. Just press and hold the power button on your Mac until it turns off. The first is to hold down Command + R as the MacBook boots up. If you're selling, giving away, or trading-in your Mac and want to leave it in an out-of-box state, don't use the setup assistant or your previously connected Bluetooth devices, if any. After restart, a setup assistant guides you through the setup process, as if you're setting up your Mac for the first time.After joining a network, your Mac activates.To select a Wi-Fi network, use the Wi-Fi menu in the upper-right corner of the screen. You might be asked to select a Wi-Fi network or attach a network cable.

When reconnecting to a Bluetooth keyboard, you're asked to choose a language.

If the accessory doesn't connect within 30 seconds, turn the accessory off and back on. If it needs to reconnect to a Bluetooth accessory such as a keyboard or mouse, you might be asked to turn on the accessory.
