From the fault messages observed I would suspect a explosive device in the fwd galley area carts/cannisters. The explosion has breached the RHS of the aircraft causing the windshield heat controller, flight warning computer/air data fault, avionics smoke and in turn lav smoke faults. The explosion in that area also behind the flight deck circuit breaker panels 121VU etc ... very sad
But you're missing the most important and obvious message? There is no "Cabin Pressure" message, right? At FL370 any breach of the pressure hull is going to bring a cacophony of warnings and messages. But there are none. And those would be well before any smoke messages if your bomb scenario were true.
Now, if you change your device to something incendiary... maybe?
- GY