Hello everybody. I read all of these posts, and I am little bit confused. I am importing 2012 Lancer with MMCS 261UM (US version). Is it possible to rewrite it with 261EM in order to get EU firmware and EU maps? And if it is possible, what are the steps? Thank you very much for your help guys......

 

Maps- yes, most likely. Entire firmware - no. US version has NTSC while EU version has PAL.

Get EU maps (they're available, just google), unlock HDD, write new maps.