It's not disabled, that is the (group of boards) heading for that section of the list. Same as the Arduino AVR Boards one at the top of the list. You've picked the correct option, the first of the three in that list. Be warned though, if you have flakey internet or wifi, that option *will* result in your Oak rebooting into config mode where it will wait for you to tell it what access point to connect to. You may want to consider the manual config mode option, where it only goes into config mode if the code crashes and it can reboot it's way out, or if you connect P1 to GND.
