Xbox SoftMod with psp

Ok i saw on here that i could mod with my psp so i got it all runnin, i mean kinda. I connected to the xbox and erased everything went fine next i went to get all the programs Ar and usbview got all that stuff the only thing is is tha when i open AR the AR light blinks green and gives me the error report thing send or dont send. i unplug the psp and AR stays on but as soon as i plug it in it goes down. i really dont have the money to buy a usb because i just lost my job.