cant read net header????

i want to flash my w910i but it not happenening coz as whenver i insert cable and click on file system after sometime reading its show cant read net header? what is the solutuon for this?
its show like this:

ChipID:C802,EMP protocol:0401

PHONE STATE: "RETAIL"
FLASH CID: 0052
OTP LOCKED:1 CID:52 PAF:1 IMEI:35739202515497 CERT:RED
LDR:2008-07-23 12:03 CXC1250843_DB31XX_CS_LOADER_ACC_SDRAM_R2A065
LDR CAPS:SYSTEM FLASH SIGNATURE AUTH
LDR:2008-07-23 12:03 CXC1250780_DB31XX_CS_LOADER_APP_SDRAM_R2A065
LDR CAPS:SYSTEM FLASH GDFS FILESYSTEM TA
can't get NET header
Elapsed:185 secs.

plz help me..as i m new to this...