the name should be blacimg.nbh
SAFEST WAY TO FLASH YOUR ROM IS THROUGH STORAGE CARD METHOD ALSO WITH USPL:
* Copy BLACIMG.NBH into the root dir of your Storage Card.
* Be sure to have at least 30% of charge.
* Turn off your device by using the Power Button.
* Go to Boot loader mode. Push and hold Vol. Down + press Power button.
* Be sure that Device is connected to PC first before inputting the Storage card
* Input Storage card when you see USB displaying on screen.
* Now run USPL.
* If all instruction is followed device will start upgrading through Storage Card.
* Always ensure that you run USPL before flashing any rom when using USPL method.
taken from post #2 of dutty's rom thread