Just tried that, same result...
Welcome to SEtool2 ( LITE edition ) v 1.11
supported DB2010/DB2012 CID49/50/51/52, DB2020 CID49/51/52
Loaded 51 flash descriptors
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ChipID:9900,EMP protocol:0301
BOOTROM MODE DETECTED
Speed:921600
OTP LOCKED:1 CID:51 PAF:1 IMEI:35282601692502 CERT:N/A
FLASH CID:52 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:2019
Flash props sent ok
writing D:\Documents and Settings\Administrator\Desktop\FlashFiles\W850_R1K G001_MAIN_GENERIC_RED52_RECOVERY.mbn
CURRENT FLASH FILE CID:52
SSW uses complete hash, hash len is:9200
HDR block not accepted,error:15
Elapsed:7 secs.
ChipID:9900,EMP protocol:0301
BOOTROM MODE DETECTED
Speed:921600
OTP LOCKED:1 CID:51 PAF:1 IMEI:35282601692502 CERT:N/A
FLASH CID:52 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:2019
Flash props sent ok
writing D:\Documents and Settings\Administrator\Desktop\FlashFiles\W850_R1K G001_MAIN_GENERIC_RED52.mbn
CURRENT FLASH FILE CID:52
SSW uses complete hash, hash len is:9200
Will flash 460 blocks...
SSW loading returns:0
writing D:\Documents and Settings\Administrator\Desktop\FlashFiles\W850_R1K G001_FS_CENT_EUROPE_RED52.fbn
CURRENT FLASH FILE CID:52
SSW uses complete hash, hash len is:4740
Will flash 237 blocks...
SSW loading returns:0
Elapsed:359 secs.
ChipID:9900,EMP protocol:0301
BOOTROM MODE DETECTED
Speed:921600
Flash ID check:2019
Flash props sent ok
OTP LOCKED:1 CID:51 PAF:1 IMEI:35282601692502 CERT:N/A
FLASH CID:52 COLOR:RED
Model:W850i
Brand:Generic
MAPP CXC article: R1ED001 prgCXC1250200_GENERIC_CY
MAPP CXC version: R1ED001
Language Package:EUROPE_1
CDA article: CDA102295/7
CDA version: R2A
Default article: cxc1250489
Default version: R1ED001
Operator: 234-30
Elapsed:5 secs.