eror fs flas w810

hi i have a w810i cid50
i flashed main file
when i want to flash fs
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setool2
CDA:CDA102555/109
VARIANT:M_EAST_N_AFR
LANGUAGE: EN
LANGUAGE: AR
LANGUAGE: FA
LANGUAGE: FR

ChipID:8040,EMP protocol:0301
NEW SECURITY MODEL DETECTED
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:50
Speed:921600
OTP LOCKED:1 CID:50 PAF:1 IMEI:35657301911843 CERT:RED
LDR:060712 1520 HAN_DB2012_FLASHLOADER_R1A002_CXC1250695
Flash ID check:2019
Flash props sent ok
writing C:\Documents and Settings\Administrator\Desktop\New Folder\main\W810_R4EA031_MAIN_GENERIC_HN_RED50\W81 0_R4EA031_MAIN_GENERIC_HN_RED50.mbn
CURRENT FLASH FILE CID:50
SSW uses complete hash, hash len is:6880
Will flash 344 blocks...
SSW loading returns:0
writing C:\Documents and Settings\Administrator\Desktop\New Folder\fs\W810_R4ED001_FS_M_EAST_N_AFR_RED50\W810_ R4ED001_FS_M_EAST_N_AFR_RED50.fbn
CURRENT FLASH FILE CID:50
SSW uses complete hash, hash len is:3140
Will flash 157 blocks...
verify block error
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xs++
Sending db2010_db2012_cid50red_flash_r1a002.bin...

20:24:55| Applet ID: 060712 1520 HAN_DB2012_FLASHLOADER_R1A002_CXC1250695

20:24:55| This is a FLASH loader

20:24:55| Now flashing firmware main...

20:24:55| Flashing c:\documents and settings\administrator\desktop\new folder\main\w810_r4ea031_main_generic_hn_red50\w81 0_r4ea031_main_generic_hn_red50.mbn

20:24:55| Header type: BABE

20:24:55| 344 flashblocks

20:24:57| Binary acknowledge failed with: 15

20:24:57| Command: Error 0x15

20:24:57| Failed sending flashblock 1. Returnvalue 0xFFFF250B

20:24:57| Finishing flash

20:25:56| Error: Flashing failed

20:25:56| Disconnected... Unplug the phone

20:25:58| Shutting down...
last blk:45960000,00010000
Elapsed:264 secs.
Abort all operations.
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plz help me

You have wrong FS ( MAIN and FS must be the same ). I hope you do backup GDFS before flashing , but first try do full flash ( you need a custpack for finalization )

Thanks
my main is r4ea031
the same fs is not exist
only r4ed001 finde in frimware

so use another firmware version...
fs and main MUST BE THE SAME!