Unlike modern smart devices, the BDVD 8310 does not have an on-screen setup wizard. All initial configuration—from aspect ratio (4:3 vs 16:9) to TV system (PAL/NTSC)—is done through a text-based menu that is nearly impossible to navigate without a reference guide.
Information on file compatibility for USB media can be brief depending on the specific manual version. Bush Bdvd 8310 User Manual
If your player is not behaving as expected, try these common fixes: Unlike modern smart devices, the BDVD 8310 does