Unlocking K610i and if required firmware upgarde

Hi,

It is my first post on this forum so please excuse me for my ignorance.

I have K610i which is 3 UK locked. It had CID49 and REEJ001 firmware. I need to unlock it. I'm unable to find K610_R1EJ001 firmware for CID52 so can't upgrade it. Vesrion valable on this site doesn't work and is giving error HDR BLOCK failure ...see below

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.

FILE RECOGNIZED AS CUSTOMIZATION PACKAGE.
PACKAGE CONTAINS SIMLOCKS ! USE WITH CARE !
CDA:CDA102497/46
MODEL:K610i
VARIANT:HUTCH_1
LANGUAGE: EN
LANGUAGE: DA
LANGUAGE: DE
LANGUAGE: IT
LANGUAGE: SV
ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:49
Speed:921600
OTP LOCKED:1 CID:49 PAF:1 IMEI:35381301184590 CERT:RED
FLASH CID:49 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:897E
Flash props sent ok
writing C:\Users\Raman\Desktop\JDFLASHER\anycid\K610_R1EJ0 01_CID52\K610_R1EJ001_MAIN_GENERIC_RI_RED52\K610_R 1EJ001_MAIN_GENERIC_RI_RED52.mbn
CURRENT FLASH FILE CID:52
SSW uses complete hash, hash len is:9100
HDR block not accepted,error:19
Elapsed:25 secs.

Just to prove and try if I can be able to unlock with CID 49 itself, as I understand it is not possible to unlock under CID49, I have upgraded firmware with K610_R1EJ001 CID49 Chinese version and that worked fine but I was not able to unlock phone. See log below

Will backup GDFS now.
ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:49
Speed:921600
OTP LOCKED:1 CID:49 PAF:1 IMEI:35381301184590 CERT:RED
FLASH CID:49 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:897E
Flash props sent ok
CSloader version:
070410 1557 HANCXC1250562_DB2020_CSLOADER_R3A009
loader startup: executed
loader GDFS startup: executed
stated number of vars:1274
Found:829 variables
Found:407 variables
Found:38 variables
GDFS read all done, GDFS_35381301184590.BIN written
Phone detached
Elapsed:32 secs.
ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:49
Speed:921600
OTP LOCKED:1 CID:49 PAF:1 IMEI:35381301184590 CERT:RED
FLASH CID:49 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:897E
Flash props sent ok
phone CID not supported in that mode
Elapsed:7 secs.
ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:49
Speed:921600
OTP LOCKED:1 CID:49 PAF:1 IMEI:35381301184590 CERT:RED
FLASH CID:49 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:897E
Flash props sent ok
phone CID not supported in that mode
Elapsed:1 secs.
ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:49
Speed:921600
OTP LOCKED:1 CID:49 PAF:1 IMEI:35381301184590 CERT:RED
FLASH CID:49 COLOR:RED
LDR:061201 1314 HANCXC1329129_DB2020_FLASHLOADER_R2A005
Flash ID check:897E
Flash props sent ok
writing C:\Users\Raman\Desktop\JDFLASHER\anycid\K610_R1EJ0 01_MAIN_TAIWAN_TH_RED49\K610_R1EJ001_MAIN_TAIWAN_T H_RED49.mbn
CURRENT FLASH FILE CID:49
SSW uses complete hash, hash len is:9100
Will flash 455 blocks...
SSW loading returns:0
Going to execute VKP script....
Enable alternative security bypass !!!
Starting to process VKP patch script: C:\Users\Raman\Desktop\Setool2lite V1.11\qamaker\quick_access_K610_R1EJ001.vkp
VKP script loaded OK. Lines: 1637
Patch structure created OK. Determining blocks to read...
New block #0000 added: $44140000
New block #0001 added: $45BC0000
Blocks selected OK. Reading blocks: 2
Block @ $44140000 read error. Have only: 00000000 bytes
Elapsed:404 secs.

Can someone please help if I am doing something wrong and/or from where I can get correct forware for K610_R1EJ001 CIS52?

Any help would be appreciated.