flashing emmc and still waiting for usb device
 

Need help..
First i start to flash software and then intrenal memory but when i start flashing the internal memory it disconnects n900 and writes waiting for usb device.. What's the problem? What did i do wrong? I use normal flasher-3.5 commands to flash it but every time i do this its show the same...
Can't find any solutions to sucessfully flash internal memory. So any help with that? Will be very thankfull for good reply waiting to flash that bastard