DO NOT DELETE "USBD.IRX" AND "USBHDFSD.IRX" FILES ! ***{Advanced Users Only}*** You can replace it with equivalents, they both will be copied to "mc0:/SYS-CONF" folder by installer and will be used by the Free McBoot Loader. You can put your eXtended modules ("XSIO2MAN", "XMCMAN", "XMCSERV" and "XPADMAN") in this folder, the installer will use it to provide compatibilty with SCPH-10000 ps2. ~~~~UPDATED IRX ~~~~ The drivers used by uLaunchELF v4.39 are updated for better USB compatibility, so i have replaced the original IRX files from the Free McBoot 1.8b release for this package.