Unless depressurization would both starve the fire and incapacitate everyone on board...
Plausible..
Pilots get the fire alarm, they turned back. Fire resulted in damage to electronics.
Fire also resulted in slow depressurization - starving the fire and incapacitating everyone on board
Which fire can depressurize ? LION batteries - fire than explosion causing depressurization.
Where were LION in cargo - forward or rear?
Supposedly the zigzag pattern after return is based on Malaysian primary radar - which cant be trusted - given Malaysia's past in sharing conflicting information..