Reflashing k800i to k810i

[j_koulis]

hello my friend ,
I have a Sony Ericsson k800i and when I connected to the XS+ utility shows the following:

Baseband ID: 9900
11:55:51| Protocol Version: 3.1
11:55:51| Warning: IMEI name does not match GDFS name (IMEI:NULL GDFS:K800)
11:55:51| ...using GDFS name
11:55:51|
11:55:51| Profiling SEMC phone...
11:55:51| Platform: DB2020
11:55:51| OTP CID: 51
11:55:51| EROM CID: 53
11:55:51| EROM Color: Red
11:55:51| IMEI: 35427102xxxxxx
11:55:51| Phone ID: K800
11:55:51| Region: VFE_LIVE_1
11:55:51| CDA: CDA102511/30 R15A
11:55:51| Firmware Version: R8BF003
11:55:51| EROM: R3A022
11:55:51| Ready for operation!


Software characteristics from the phone:
version information:
R8BF003
prgCXC1250211_VODAFONE_WI R8BF003

EROM: R3A022
prgCXC1250616_EROM_DB2020_HB106GENERIC_FOTA_SIMLOC K_FLAFLA_SIBLEY_SEMCUSB

Customization:
CDA102511/30 R15A
cxc1250490 R8BF003
VFE_LIVE_1



a few days before I tried to flash it with the same version(XS+ utility) but i couldn't...it is probably cid53?
Please give me some instructions for my phone....how to debrand it and to reflash as k810i...
I saw the guide...but i cannot understand which files Must i download for ''MY'' k800i...please help me


Setool2 image: