The files you mention there are all oscam configuration files - it's the oscam executable/binary you need to update: leave those config files alone for now.
How did install oscam/oscam-emu in the first place? If it was by plugin/repository, then you may be be able to update it by the same means you installed it. "Dreambox" alone is not enough to identify the binary file you need eg yours could be a box with MIPS, or ARM CPU.
And it might even be possible that you already have a sufficiently up-to-date oscam-emu. It would be helpful to know your curent emu version number. You can either catch the oscam live log text *very* early into start-up, or if you miss that, & have the emu reader enabled, go to the webif "Readers" page. Click on your emu reader's "i" info icon towards the right. Then you can reveal the emu version by clicking the "Show" button below the "Serial" column heading on the left side of the page.