Customization = Changing or replacing original content of the phone, like ringtones, wallpapers, icons, themes, that come with branded or unbranded phones. It's nothing more than first default configuring of the phone after flashing FS file. Usually the process is:
1. Writing customize.xml and server&java certificates in tpa/preset/custom in sonics folder to tpa/presest/custom folder in the phone's internal file system
2. When the phone starts after flashing, it parses that xml file, puts settings written in that xml into the phone's gdfs and works out certificates (some go to Trusted certificates, some got Java certificate etc)
If you open customize.xml you can change almost any initial settings like time zone, date, internet profiles etc.
Branded Phones = Some network providers place their own ringtones, themes, icons, links etc within phone's software. (eg. vodafone, orange, t-mobie, rogers, cingular etc.) Debranding means removing all this content and restoring phone to it's original factory SONYERICSSON condition. This will not damage phone in any way! You will loose Operator Icons, and links, WAP, and MMS settings however these you can get via
Sony Ericsson - Sony Ericsson
select Region ---> Country ---> Support ---> PHONE SETUP
Finalization = Completing flashing operations and storing basic settings that phone needs to properly operate [i.e. security certificates, (and this is why phone displays "configuration error" if it is not properly done)].
Firmware has two parts:
1. FS: It contains languages, images, sounds, animations, settings, etc. Anything that isn't pure software.
2. Main: It contains the software.
Note: MAIN and FS HAVE to be the same software version
MAIN R1BC002
FS R1BC002
Customization has to be same region as FS, in this case
FS = EU5 (EUROPE_5)
Customization =CDA102338/50 ( EUROPE_5 Sunrise Switzerland)