Force to load iso with pcsx?

Hi I have the actual version 1.6.3 from Playstore on Galaxy s5 with Android 6.0.1 I know that in earlier versions i was able to load psx isos after i loaded pcsx core (Load pcsx core, load Content -> iso, worked fine) Now when I try to, it shows always a list with supported cores and pcsx is not in the list. Is there a way to force the core with my selected Content?

Thanks in advance Seed

Okay I found a workaround: I just renamed the *.iso’s to *.img and they work fine this way with pcsx-rearmed.