Weird??? My w660 r8bb001 bec0me CID51

Hy everyone,, please help me.
my w660 is have erom CID53 (after SEUS)
for a few week ago is suddenly dead !!, mean I can't boot SEMC usb like ussually by press + hold c button.
I bring to the repairman and not long its alive again. So its fix my problem for a while.
But when identify with setoollite, my phone become CID51.
here's is the log :

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 http://www.setool.net and buy FULL.

ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:51
Speed:921600
Flash ID check:897E
Flash props sent ok
OTP LOCKED:1 CID:51 PAF:1 IMEI:35958401xxxxxx CERT:RED
FLASH CID:51 COLOR:RED

Model:W660i
Brand:Sony Ericsson
MAPP CXC article: R8BB001 prgCXC1250448_CHINA_FY
MAPP CXC version: R8BB001
Language Package:C_ASIA
CDA article: CDA102568/7
CDA version: R8A
Default article: cxc1250839
Default version: R6AD001

Operator: 000-00

Elapsed:10 secs.

PLEASE HELP HOW TO BACK MY CID BECOME CID53 AGAIN???
CAUSE I WANT TO TRY APPLY SOME PATCH,, CID51 NO PATCH AVAILABLE !!!

PS: my english not good enough