please help me

Can anybody tell me what are "Custom Files", "Firmware", "SFA". I want to Flash my phone but I'm really confused which file to download :eek: . And by the way I read somewhere that before flashing u have to back up ur GDFS which is unique to ur phone. Out of above 3 names what is GDFS. I'm using w350i pnx \ cid 53 phone.

Also Please tell me is there any way to back up original FS on my phone

hi
first to flash your phone you need :
a software:FARmanager+JdFlasher plugin (To flash CID53) and:
MAIN file
FS file
and a CUSTOM file
and before, for more security do a GDFS backup (use xs4.1 for linux: you are CID53)
for more and detailed informations have look in Tutorials - Top Sony Forums
and also generaly in 'Mark forum read'
;)

And GDFS is some kind of EEPROM area where have calibration data security and other data .
GDFS contain Security RSA zone who is unique for each phone