Its not that simple as you put it out, there is no software out there that will open all maps for you. You get the software ex:Winols(to buy it you need to have a company), and then learn how to use it, you may purchase mappack for you file, load it into winols and you have all maps needed to tune with factors/offsets...., Still you need to know what to change and to what value, whats positive, whats negative, maps that are related with each other.
As for free software you can try
http://www.tunerpro.net/If you are looking to a one time tune to your car, i suggest you ask a pro tuner to tune your car, if you want to DIY, start reading on the forum, know how a modern diesel works, then look at some file, try find its maps and understand what map is responsible for X function of the engine.