I have a PSP Slim with 3.71 M33-3 CFW and IRShell 3.8, which is compatible with slim. When I select "Toggle USBHost" I get this message: "Error: Can't connect to USB Host Click any key to continue" What am I doing wrong? =S
USB host is only for people with wireless USB data storage. You need a special wireless router for that. To connect via wired USB, you click High-Speed Data Transfer (I think its called that...). Anyway, the symbol looks exactle the same to the one on a USB cable, so there you go.