Delete the xemu.conf file (or move it to a safe place if you have complex custom settings). Re-launch Xemu and re-select your BIOS and flash ROM files. Advanced Fix: Re-flashing via Xiso/Dashboard
After applying the flash+rom fix:
If you are using a custom EPROM, you might need to use an EPROM editor to fix settings like PAL/NTSC or widescreen, which can prevent the system from loading, especially for PAL region games. Advanced Troubleshooting: "Flash Rom" Xemu Fix flash+rom+xemu+fix
If Xemu continues to show an error about failing to open the flash file, the program's internal settings may be corrupted. A simple reset can often fix this. Delete the xemu
