my friend gave me his phone
Sony Ericsson C905A
Specs :
DB3120
R1FA035
CID : 052
RED
(According to A2Uploader)

for some reason the phone got a messed up screen half screen with colors points and mostly cant see nothing

i want to upgrade to files Download Section:
R1FA035 RED CID53

will i lose the phone Sim Free Function?
can i use different FS/Main files to keep the Sim Free and keep the Hebrew too..?

Thank you