D-Client error - HELP!

Help me out! I got this error while trying to flash my K850i, I got the Firmwares and input it following the D-Client guides, but it did not work! What should I do, plz HELP ME OUT!


D-Client v1.61 (0021)

Turn off the phone.
Hold its C-button and connect it to the cable within 30 seconds.

EPI opened & EPI thread started.
ASIC: db3150
Boot mode: EROM
Color: Red
Cid: CID52
Phone: K850i

Phone model: K850i
Phone CID: 52
Phone version: Choose from list
Phone language:
CDA:
Customize: Yes
Customize: Yes
Unlock: No
Flash file: K850_R1FA035_MAIN_GENERIC_SO_RED52.mbn
Flash file: K850_R1FA035_FS_AMERICA_RED52.fbn

Sending CS loader...
Sending CS loader...
Flashing file...
Please wait...
Phone is off.
Error occured...
EPIUSB connection closed


Program finished with error. Disconnect cable and remove battery from the phone.
Connecting to server...
Server version: 2.55

Credit: 0.5
Special Credit: 0
Unlock free: 0
Prepaid days: 0day(s) 00:00:00
Block days: 0day(s) 00:00:00

Connection closed.

---------------------------

(017B1FBA)
(4CDAEA1A)
(13FCD63B)
Error occured during sending flash. (428030E7)