V.4.2 shuts down while connecting BB-8
I use the very first iPadmini with app v.4.0.2 to connect my BB-8 which was fine and fun. But now I can use app v.4.2 only without BB-8. When I get close to my BB-8, it shuts down while connecting, no matter I re-install app or powering down my iPadmini and restart. How can I get old app v.4.0.2 back? I turn off app auto-update immediately.