Thanks AC.
There’s been a huge search using surface, air, and orbital methods, and nothing has turned up, despite the false alarms and some fakery. It’s difficult to put the plane in the Maldives at low altitude if it were running with autopilot all the way, unless it were about to crash into the Indian Ocean (iow, almost out of fuel). And if it were, the tip was from a couple days ago, and a narrower search has also failed to turn up any sign.