Need help SE w580 language change/add

Hi,,,
Trying to change or add support for Spanish lang to my W580:
Platform: DB2020
OTP CID: 49
EROM CID: 49
EROM Color: Brown
IMEI: 00460102xxxxxx
Phone ID: W580
Region: EUROPE_4
CDA: CDA102568/13 R8A
Firmware Version: R8BA024
EROM: R3A022
etc...

Tried almost every prog/tool:

XS++ 3.1(darwin) error when tring to upgarade CID49 to CID52
Sending db2020_red49_cs_r3a009.bin...
Binary acknowledge failed with: 89
Command: Error 0x89

SeTool 2 lite v1.11 error when using script to upgarde CID49 to CID52
CID not supported

Far manager and jdflasher error when connecting
Cant find device info in xml (49brown)

SESU no upgarde possible, latest software bla.bla

I have both FW files and extracted .lng .t9 files but CID49 in combination to my phones
IMEI: 00460102xxxxxx not allowing me to flash/change anything.

Pls help, I'm missing some steps or I'm completly out of luck? My phones is detected in all cases. Sorry for long text, had to explain it all!

EROM Color: Brown


All "normal" Sony Ericsson phones are RED, but your is BROWN ( test version ).
You must change BROWN certificate to RED.