Flash K750c (chinese) to W800 (also chinese)

[daddo]

in the guide to add a language, there is a step that says:
"5) you will need to find and edit the allowed_language.txt...." and add "it"
i went to the dowload section and downloaded the file u said and extract IT.lng and IT.T9 and put them in FS/tpa/preset/system/language
deleted lng.lst and lng.dat
and replace the original customize.xml (FS/tpa/preset/custom) with the one you gave me.
then disconnect and restart... but no italian language in the phone nor in sms writing language...

i noticed one thing, in the FS/tpa/preset/system/language there is en.t9 and zs.lng but no en.lng or zs.t9
why italian w800_Language_EUROPE_5 contain 2 italian files? (IT.lng and IT.T9)

then i downloaded W800_R1N035_FS_EUROPE_5_RED36.rar from firmware download section and i tried to extract the files using main2raw (or babe2raw, or gextract) & SEFStool4 (i didnt find any other software for this step... i tried with version 4.4 and 4.7 but didnt work..)
but SEFStool4 give me a fatal error coz cant open file version 23....

i tried to extract with some other software (read3150.exe) but i couldnt do it....
any idea how to do it?