Dead K610i

Help required
My K610i has died while trying to unlock it.
Initially I flashed new main firmware R1GB001, because my firmware was RCD001, and I could not find a copy of that in order to create the unlock patch. I also changed from cid49 to cid52 (which apparently I needed to do before unlocking).
At this stage everything had worked fine.
I then tried to unlock using SeTool_2_Lite1.11 and SIMLockPatchGen_v2.2 and it failed with a dead phone.
Log is
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:52
Speed:921600
OTP LOCKED:1 CID:49 PAF:1 IMEI:35381301060499 CERT:RED
FLASH CID:52 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:897E
Flash props sent ok

CID52 BYPASS PROCEDURE STARTED
Processing part1...
CSloader version:
070410 1557 HANCXC1250562_DB2020_CSLOADER_R3A009
Processing part2...
Processing part3....
OTP LOCKED:1 CID:49 PAF:1 IMEI:35381301060499 CERT:RED
FLASH CID:52 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:897E
Flash props sent ok

REMOVE CABLE FROM PHONE
REMOVE BATTERY FROM PHONE, THEN INSERT IT BACK
THEN PRESS "READY"

HOLD "C" BUTTON AND ATTACH PHONE

CID52 BYPASS PROCEDURE FINISHED

ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:52
Speed:921600
Trying to launch embedded bootloader...
INT LDR:DB2020_PRELOADER_FOR_SETOOL2
LDR:DB2020 LOADER FOR SETOOL2
Flash ID check:897E
Flash props sent ok
writing C:\Documents and Settings\Tamara\Desktop\Sony Ericson\Attempt 2\K610_R1GB001\K610_R1GB001_MAIN_GENERIC_TH_RED49. mbn
CURRENT FLASH FILE CID:49
SSW uses complete hash, hash len is:9100
Will flash 455 blocks...
verify block error
last blk:44160000,00010000
Elapsed:386 secs.
Any help would be very useful.
Thanks in advance

just reflash the main on it let us know it fixed it

Hi
Thanks for that. I had a problem initially because (I think) my Firmware was for CID49, but I had changed the phone in XS++ to CID52. But I downloaded some CID52 Firmware (R1KG001), flashed it, and my phone is now back in the land of the living. Now I will have another go at Unlocking.