nokia 6708 problem

[sallupat]

i have one nokia 6708 which only show nokia so i try to flash it with "nokia 6708 service tool" but every time there is error massage shows that" download fail" at 42% to 45%


here is more detail

DT Version: V6.004
Battery Cap. : 98% ,Battery Tmp : 32,Battery Vol. : 4100
Module ID: KONB2A006223154622
Use Default SIB Setting
Downloading:C:\Program Files\NOKIA6708\Nokia6708_ServiceTool_V1.8_with_do cument\Nokia6708_ServiceTool_V1.8\image\KONB2A1330 14.img
Downloading:C:\Program Files\NOKIA6708\Nokia6708_ServiceTool_V1.8_with_do cument\Nokia6708_ServiceTool_V1.8\image\KONB2A1330 14.cb1
cb1 Download fail!
------------------------------------
ERROR:USB_ACCESS_FAIL
Possible Reason:
1)can not access specific USB disk,
PC may lose connection with device



i also change cable & computer also


Thanks


salim