Converting to CID52 (Z550a)

[a123456789]

I have tried SEUS, it does not work.

The indetify log of XS++ is following:

15:26:23| TURN OFF PHONE!
15:26:23| Hold 'C' button on phone and connect phone NOW.
15:26:23| You have 30 seconds...
15:26:23|
15:26:24| Baseband ID: 8040
15:26:24| Protocol Version: 3.1
15:26:24| NEW SECURITY PHONE DETECTED! SWITCHING...
15:26:24| Phone name detected!
15:26:24|
15:26:24| Profiling SEMC phone...
15:26:24| Platform: DB2010
15:26:24| OTP CID: 51
15:26:24| EROM CID: 52
15:26:24| EROM Color: Red
15:26:24| IMEI: 35350501xxxxxx
15:26:24| Phone ID: Z550
15:26:24| Region: ROGERS
15:26:24| CDA: CDA102731/14 R10A
15:26:24| Firmware Version: R6GA004
15:26:24| EROM: n/a
15:26:24| Ready for operation!

The identify log of SEtool is following:

Welcome to SEtool2 ( LITE edition ) v 1.11
supported DB2010/DB2012 CID49/50/51/52, DB2020 CID49/51/52
Loaded 51 flash descriptors

if you like LITE edition - please visit Index of ./ and buy FULL.

ChipID:8040,EMP protocol:0301
NEW SECURITY MODEL DETECTED
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:52
Speed:921600
Flash ID check:897E
Flash props sent ok
OTP LOCKED:1 CID:51 PAF:1 IMEI:3535050******* CERT:RED
FLASH CID:52 COLOR:RED

Model:Z550a
MAPP CXC article: R6GA004 prgCXC1250583_GENERIC_ML
MAPP CXC version: R6GA004
Language Package:ROGERS
CDA article: CDA102731/14
CDA version: R10A
Default article: cxc1250506
Default version: R6GA004

When I try to flash it by CID51's mbn, fbn, I got the following error:

Welcome to SEtool2 ( LITE edition ) v 1.11
supported DB2010/DB2012 CID49/50/51/52, DB2020 CID49/51/52
Loaded 51 flash descriptors

if you like LITE edition - please visit Index of ./ and buy FULL.

ChipID:8040,EMP protocol:0301
NEW SECURITY MODEL DETECTED
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:52
Speed:921600
OTP LOCKED:1 CID:51 PAF:1 IMEI:3535050******* CERT:RED
LDR:061205 1354 HAN_DB2012_FLASHLOADER_R2B012_CXC1326738
Flash ID check:897E
Flash props sent ok
writing C:\CellPhone\Sony\MyWork\R6GA004_RED51\Z550_R6GA00 4_MAIN_GENERIC_ML_RED51.mbn
CURRENT FLASH FILE CID:51
SSW uses complete hash, hash len is:6780
HDR block not accepted,error:2
Elapsed:8 secs.