Secure the lid, close off the pressure valve, turn on and press manual to high pressure and press the up button until the time hits 30 minutes then let the valve naturally release (for more tender ribs) or quick release. I let mine naturally release for 10 minutes.
While the instant pot naturally release, preheat oven to broil. Line a baking sheet with foil. When the valve has released, remove ribs and brush with another 1/4 cup of BBQ sauce then place in the oven to broil and brown for 5 minutes.
Serve with BBQ sauce on the side and garnish with cilantro.