Please help me for customizing c902

I HAVE SONY ERICSSON c902 BUT HE BUG WHENE I FLASHING WITH SEUS THE FIRMWERE STOPED IN THE LAST .I FLASHING WHITH a2UPLOADER WHITH VERSION C902_R3EG004AS_FS_C-ASIA_CID52_RED52 AND THE VERSION C902_R3EJ001AS_MAIN_GENERIC_AS_RED52
THIS IS LOG OF FLASHING

phone pre-boot failed,possible RECOVERY needed.
PROCEDURE WAS STOPPED BY USER
Elapsed:31 secs.
ChipID:C900,EMP protocol:0401

PHONE STATE: "RETAIL"
FLASH CID: 0052
OTP LOCKED:1 CID:52 PAF:1 IMEI:35362603553257 CERT:RED
LDR:2008-07-23 12:03 CXC1250843_DB31XX_CS_LOADER_ACC_SDRAM_R2A065
LDR CAPS:SYSTEM FLASH SIGNATURE AUTH
LDR:2008-07-23 12:03 CXC1250780_DB31XX_CS_LOADER_APP_SDRAM_R2A065
LDR CAPS:SYSTEM FLASH GDFS FILESYSTEM TA
writing "E:\portable flash\nadjeem\firmware\c902\C902_R3EG004AS_MAIN_GE NERIC_AS_CID52_RED52.mbn"
ALLOWED DOMAINS:BLUE BROWN RED
MAXIMUM CID:52
Will flash 816 blocks...
ssw file accepted
writing "E:\portable flash\nadjeem\firmware\c902\C902_R3EG004AS_FS_C-ASIA_CID52_RED52.fbn"
ALLOWED DOMAINS:BLUE BROWN RED
MAXIMUM CID:52
Will flash 696 blocks...
ssw file accepted
LDR:2008-05-23 12:10 CXC150779_DB31XX_EXPLORER_LOADER_APP_SDRAM_R2A059
LDR CAPS:SYSTEM FLASH GDFS FILESYSTEM TA
a2_startfs err:0001 ////////// HERE THE CUSTOMISED FILES NO FLASHING AND THE PHONE NO WORKING
Elapsed:457 secs.
Elapsed:0 secs.
ChipID:C900,EMP protocol:0401


PLEASE HELP ME

may be problem with the gdfs or flash chip

do you want to debrand your phone

C902 have 2 versions AO or AS - you must see when take picture in Properties > Details.

You can try with another software pack (FS, MAIN and CDA); I recommend a generic pack.
Grettings