firmware version

[SeaMonkey]

You can use this 3 files and do full flash (this is newest firmware for your phone):

MAIN: W810_R4EA031_MAIN_GENERIC_HN_RED49
FS: W810_R4EA031_FS_EUROPE_2_RED49 and
CUSTPACK: W810_CDA102555_11_R2A_Generic_EUROPE_2

For flashing use this tutorial - XS++ 3.1 Guide-Flashing, Customizing, Recovering - Top Sony Forums or
Flash your phone using SETool 2 Lite - Top Sony Forums

For unlocking use this tutorial - part 1 - for DB2010 Remove SIM-lock patch generator - Top Sony Forums

[alex-r]

thats great, thanks a lot, will give it a go! :D

[SeaMonkey]

If you not sure in only 1 thing - first ask and will help you