i can't flash fs (w810)

ChipID:8040,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:49
Speed:921600
Trying to launch embedded bootloader...
Embedded flashloader:
COMPACT_ID_LOADER_CRIPPLED_SETOOL2_R2
Flash ID check:2019
Flash props sent ok
FOUND: R4EA031_CXC1250316_GENERIC_HN
Restore from:R4EA031_CXC1250316_GENERIC_HN
writing E:\Documents and Settings\xp\Desktop\W810_R4EA031_MAIN_GENERIC_HN_R ED49.mbn
CURRENT FLASH FILE CID:49
SSW uses dynamic hash, dynamic hash len is:344
Will flash 344 blocks...
SSW loading returns:0
writing E:\Documents and Settings\xp\Desktop\W810_R4EA031_FS_EUROPE_2_RED49 .fbn
CURRENT FLASH FILE CID:49
SSW uses dynamic hash, dynamic hash len is:161
Will flash 161 blocks...
Abort all operations.
llbug: can't get all data, got:0 expected:5641
verify block error
last blk:459E0000,00010000
Elapsed:272 secs.

Clean the cable connectors and the phone's fastport and try again. Maybe it will help.

Or maybe your battery discharged during flashing process. Also check with "Babeck" if the FS is not corrupted.

try to flash with another program

try flash with xs++. you can download it from topsony.com site...