[XPERIA X10 Q&A, Help & Troubleshooting] cmross13:
as you will see, i tried it twice, with no luck

WotanClient 3.2.0 - www.WotanServer.com [3002000]

Microsoft Windows 7 Home Premium Edition Service Pack 1 (build 7601), 64-bit ENU (ENU)

[APPSTART] checking version for WotanClient.exe...

[APPSTART] Filename: WotanClient.exe

[APPSTART] Local hash: A0E30E60BB942D2A80AC1C324AC8069F2A98EB98

[APPSTART] Remote hash: a0e30e60bb942d2a80ac1c324ac8069f2a98eb98

[APPSTART] checking version for data/data3.zip...

[INET] saving http://storage.wotanserver.com/version/data3.zip as data3.zip

[INET] connecting server...

[INET] getting file info...

[INET] filesize: 460 KB

[INET] downloading...

[INET] done.

[APPSTART] ZIP: unpacking data...

Connect your phone pressing "C"...

phone found: DCU-60 @ PORT01

initializing...

IDENT: PROT_VER="01";DATE="20100119";TIME="17:24:00";VER="R8A013";UNIQUE_DEV_ID="B465230A21F33504282A5C2DFFDA4C295092BEC2";CXC="1226-2253";TYPE="S1_EROM";SEC_LOCK_STATUS="LOCKED";HASH_PUB_KEY="00000000000000000000000000000000";EROM_AID="0001";LOADER_AID="FFFF";SW_AID="FFFF";CUST_AID="FFFF";SIM_LOCK_AID="FFFF";IMEI="00000300000000";MSN="CB511LKDCJ";SIN_VER="0001";SIMLOCK_TAMP="";AID_TAMP="NOT_TAMPERED";LOADER_ROOT="S1_Loader_Root_f851";EROM_ROOT="S1_EROM_Root_b15e";SW_ROOT="S1_SW_Root_ac12";CUST_ROOT="S1_Cust_Root_5789";SIM_LOCK_ROOT="S1_SL_Root_f20d";HW_CONF_ROOT="S1_HWConf_Root_ee5d";

S1 QSD8250 platform detected

done.

X10a (1237-3761_R38A)

PLATFORM DB0101

IMEI: 00000300000000

MODEL: X10a

OTP: N/A CID 00

EROM: N/A CID 00

SIMLOCK: NO

CDA: 1237-3761_R38A N/A (N/A)

FIRMWARE: R2CA016

Importing settings...

Settings imported.

short name: [X10]

phone found

>> Downloading necessary files...

SELECTED PHONE: X10

SELECTED FW: 2.0.2.A.0.24

SELECTED CDA: Generic Trade US (2.1.1) (X10a)

>>	RXBfbd888ad4208b88e5f2ba20fe8a73c29

>>	downloading...

[INET] saving http://storage.wotanserver.com/RXBfbd888ad4208b88e5f2ba20fe8a73c29 as RXBfbd888ad4208b88e5f2ba20fe8a73c29

[INET] connecting server...

[INET] getting file info...

[INET] filesize: 32 MB

[INET] downloading...

[INET] done.

Filesize: 34040005

>>	File ready and CRC is OK

>>	RXCaee1e90a00ca8f9d45d19440da4a41d6

>>	downloading...

[INET] saving http://storage.wotanserver.com/RXCaee1e90a00ca8f9d45d19440da4a41d6 as RXCaee1e90a00ca8f9d45d19440da4a41d6

[INET] connecting server...

[INET] getting file info...

[INET] filesize: 84 KB

[INET] downloading...

[INET] done.

Filesize: 86063

>>	File ready and CRC is OK

>>	RXDbc3fac0b6cc7dd5d9c1109bf3940f893

>>	downloading...

[INET] saving http://storage.wotanserver.com/RXDbc3fac0b6cc7dd5d9c1109bf3940f893 as RXDbc3fac0b6cc7dd5d9c1109bf3940f893

[INET] connecting server...

[INET] getting file info...

[INET] filesize: 243 MB

[INET] downloading...

[INET] done.

Filesize: 255556425

>>	File ready and CRC is OK

>> download completed.

>> Booting phone...

ERROR: file header write failed!

ERROR: file header write failed!

Connect your phone pressing "C"...

phone found: DCU-60 @ PORT01

initializing...

IDENT: PROT_VER="01";DATE="20100119";TIME="17:24:00";VER="R8A013";UNIQUE_DEV_ID="B465230A21F33504282A5C2DFFDA4C295092BEC2";CXC="1226-2253";TYPE="S1_EROM";SEC_LOCK_STATUS="LOCKED";HASH_PUB_KEY="00000000000000000000000000000000";EROM_AID="0001";LOADER_AID="FFFF";SW_AID="FFFF";CUST_AID="FFFF";SIM_LOCK_AID="FFFF";IMEI="00000300000000";MSN="CB511LKDCJ";SIN_VER="0001";SIMLOCK_TAMP="";AID_TAMP="NOT_TAMPERED";LOADER_ROOT="S1_Loader_Root_f851";EROM_ROOT="S1_EROM_Root_b15e";SW_ROOT="S1_SW_Root_ac12";CUST_ROOT="S1_Cust_Root_5789";SIM_LOCK_ROOT="S1_SL_Root_f20d";HW_CONF_ROOT="S1_HWConf_Root_ee5d";

done.

S1 QSD8250 platform detected

X10a (1237-3761_R38A)

PLATFORM DB0101

IMEI: 00000300000000

MODEL: X10a

OTP: N/A CID 00

EROM: N/A CID 00

SIMLOCK: NO

CDA: 1237-3761_R38A N/A (N/A)

FIRMWARE: R2CA016

Importing settings...

Settings imported.

short name: [X10]

phone found

>> Downloading necessary files...

SELECTED PHONE: X10

SELECTED FW: 2.0.2.A.0.24

SELECTED CDA: Generic Trade US (2.1.1) (X10a)

>>	RXBfbd888ad4208b88e5f2ba20fe8a73c29

>>	found cached, checking integrity...

Filesize: 34040005

>>	File ready and CRC is OK

>>	RXCaee1e90a00ca8f9d45d19440da4a41d6

>>	found cached, checking integrity...

Filesize: 86063

>>	File ready and CRC is OK

>>	RXDbc3fac0b6cc7dd5d9c1109bf3940f893

>>	found cached, checking integrity...

Filesize: 255556425

>>	File ready and CRC is OK

>> download completed.

>> Booting phone...

ERROR: file header write failed!

ERROR: file header write failed!