Press Sauté; heat oil in Instant Pot®. Add pork; cook about 6 minutes or until browned. Remove to plate.
Add onion to pot; cook and stir 3 minutes or until softened. Add tomatillos, garlic and cumin; cook and stir 3 minutes, scraping up browned bits from bottom of pot. Stir in beans, chiles, salt, pepper and pork; mix well.
Secure lid and move pressure release valve to Sealing position. Press Manual or Pressure Cook; cook at high pressure 8 minutes.
When cooking is complete, use natural release for 10 minutes, then release remaining pressure. Stir in cilantro.