You can also run Multiman, Irismanager or any other syscall-dependent homebrew: they will all complain about an “unsupported” or “unknown” firmware version It should give you an error complaining about cfw syscalls not found and it will display the current idps and psid values (called PSN IDPS and PSN PSID). If the system beeped, it means that the cfw disabling was successful.
Run psnpatch keeping CROSS pressed until you ear 1 beep and got back to XMB (or press 元+R3+R2 from the XMB if you are using the PsnPatch plug-in). Put it in the root of a usb stick and place it in the rightmost ps3 usb port. (If spoofing IDPS/PSID) edit psnpatch.cfg to define new idps and psid. If you want to be sure psnpatch works in your system: = TESTING IF PSNPATCH WORKS WITH YOUR SYSTEM: Here it is from the discussion thread on psx place:
