Re: Old news
Nope.
MH370 was a relatively old B777.
This kind of plane use "old school" avionic specific links (Arinc 429) which requires a very special kind of interface to be tampered with, and there's no way it can be connected to a W-LAN or an Ethernet network without significant interfacing HW and SW.
Even if Boeing wanted an A429-to-Ethernet converter for providing the position/speed/alt to the IFE, there's no chance in hell they added the Ethernet-to-A429 conversion (for the simplest of reasons : costs!)