So, I can flash another firmware version ?

I found these files elsewhere as i dont have the privilige of access to the download area.

Code:
W850_R1ED001_MAIN_GENERIC_CY_RED52
And
W850_R1ED001_FS_S_ASIA_LEVAN_RED52
Now if i flash using those, I will have asian language right ?

Is there a tutorial for changing firmware versions ?