We need to wait for the report before wondering if things like EVAS would have worked in this case. No-one knows where the fire was - we know they couldn't see well if at all - but one has to concider that, depending where the fire was, it could have burned right through the avionics wiring to the flight displays. It's very well possible that even if the smoke was cleared - they would have had no instruments anyway. What time did this happen? was it night?
For the other matter - can anyone here tell us if UPS planes are equiped with EVAS devices?