I know about etacsdecoder.com but was wondering if there's a free solution out there.

 

Wow bummer. I haven't used it in a about a year, but I didn't know they charge now. @vadimus can you confirm that there is no free version of this?

 

Diagbox could still be used for many Mitsubishi models. As far as I remember it is not working on the 3rd generation Outlander though. The installation is not plug and play and one must be extremely careful not to allow the program to reset factory specifications and attempt to communicate via Internet with the Service Center (Remember, Diagbox was developed for French clones of Mitsubishi vehicles, for example Peugeot 4008 = Citroen C4 Aircross = Mitsubishi ASX/RVR/Outlander Sport; Peugeot 4007 = 2nd generation Mitsubishi Outlander etc.)