HELP!! C905 Italian Language Firmware

Hi there,
I've got an unlocked T-mobile UK C905 and I'm trying to update the firmware to add the italian language.
I've been trying to download any kind of firmware but i had no luck.
as long as i finish flashing the phone (with both main and fs) and i switch the mobile on, I have got an error in the start up screen (it says that there's some sort of error and i should contact my service provider to fix it).
Is this a known problem? do you know how to fix it?
can you suggest which version of firmware i should download??
my actual firmware is r1ea033 red53.

If you know another way to just add the Italian language for the t9 i would be greatful!!
tnx:a018: