Thank you ... i managed somehow to find out which firmware is for my phone.
I have already changed erom cid from 51 to 52 with xs++ 3.1 darwin
erom color is red.
I have also done with backup of gdfs for my w880 phone,
i have db2020 model so my i reset my lock code to '0000'
now i need to flash phone with 3 firmware files and i know what 3 i need for
1-main firmware file
2-fs firmware file and
3-cust pack

Only when i go to download > firmware > select the desired one
it gives me message i need to pay for them....
is there any chance to download these files as freeware...
or you need to pay to download them?