SiemensBenq EF51 can not write flash! help

[nguyenms]

COM3 selected
Device: BenQ EF51
Checking data, wait...
Action: Flash write
Skip: Firmware
Skip: Flex
Write: Language Pack
Skip: Eeprom
Boot...
Phone should be Switched OFF !
Press Power button now !
Connecting...
Boot Done
Check Connection...
Check Connection Done
Set Baud...
812500
Set Baud Done
Check Flash...
Check Flash Done
Check Parameters...
Check Parameters Done
Check Space...
Flash: 001C:00C8001C00C8
flash: Mitsubishi B 8Mb
Check Space Done
Check Data...
Check Data Done
Erasing...
erase operation not required
Erasing Done
Writing...
Write: Language Pack
Flash: 001C:00C8001C00C8
flash: Mitsubishi B 8Mb
Err: error flash command
try#1 to recover write error at 01230000
Err: flash end
try#2 to recover write error at 01230000
Err: answer#20
try#3 to recover write error at 01230000
.................. ...... ....
try#5 to recover write error at 0123E000
Err: answer#20
try#6 to recover write error at 0123E000
Writing Fail
Finished, time used: 37 sec
Remove/Install battery now !
-------------------------------------------
READ flash ok
Set Baud...
812500
Set Baud Done
Check Flash...
Check Flash Done
Check Parameters...
part 1 of 2...
Reading...
Flash: 001C:00C8001C00C8
file saved: backup_full_part_1_of_2_20071004-121153.91X.bin
part 2 of 2...
Reading...
Flash: 001C:00C8001C00C8
-------------------------------
Help, thanks

[InfinityHelp]

hello!

full charge battery and use slower speed, like 115200

[nguyenms]

I will try , thanks