I actually don't have dios mios,do I need to turn that off?And would this be easier if I were to put them in my SD card instead?
leave it be and your syscheck tells me DIOS MIOS is installed, so you're fine, you should be able to boot the games with USBloader gx no problem . There isn't a separate app for dios mios. you're just using it with usbloader gx .
Just make sure in the USBloader gx, its set to use DIOS MIOS, (its installed on your NAND already). It just gets used off the NAND, you're fine