Param.sfo

PARAM.SFO

SFO (System File Object) file format can be also found on PSP, PSVITA, PS3.

Internal Structure

Header SFO

This is the Header of a SFO file.

Offset	Data	Length	Notes
0x0	0x00505346	0x04	PSF Magic
0x4	0x01010000	0x04	Version
0x8	-	0x04	Value Start
0xC	-	0x04	Params Start
0x10	-	0x04	N° of params/values

Parameters Descriptions

APP_VER

param_fmt: utf-8
param_max_len: 0x8 (8 bytes)
param_len: 0x6 (6 bytes)

Used by: PS4 Game Data

The format is XX.YY where "XX" and "YY" are numbers, and the point "." is included in the string, e.g: 01.00 for the first stable version released.

ATTRIBUTE

param_fmt: uint32_t
param_max_len: 0x4 (4 bytes)
param_len: 0x4 (4 bytes)

Used by: PS4 Game Data

Contains a maximun of 32 flags that can be turned on/off to activate/deactivate special boot modes and features of the content.

CATEGORY

param_fmt: utf-8
param_max_len: 0x4 (4 bytes)
param_len: 0x3 (3 bytes)

Used by: PS4 DISC, PS4 Game Data

CONTENT_ID

param_fmt: utf-8
param_max_len: 0x30 (48 bytes)
param_len: 0x25 (37 bytes)

Used by: PS4 Game Data

Content Identificator: The format is:

FORMAT

param_fmt: utf-8
param_max_len: 0x4 (4 bytes)
param_len: 0x3? (3 bytes)

Used by: PS4 DISC, PS4 Game Data

obs

PARENTAL_LEVEL

param_fmt: uint32_t
param_max_len: 0x4 (4 bytes)
param_len: 0x4 (4 bytes)

Used by: PS4 Game Data

It is a scale to rate the content for the different users based in user profile settings and international rating systems as: PEGI, ESRB, CERO, etc...

TITLE

param_fmt: utf-8
param_max_len: 0x80 (128 bytes)
param_len: variable

Used by: PS4 Disc, PS4 Game Data

Default "title of the game" for all languages.

TITLE_ID

param_fmt: utf-8
param_max_len: 0x10 (16 bytes)
param_len: 0xA (10 bytes)

Used by: PS4 Disc, PS4 Game Data

Identifier of the content, in the format WXYZ12345.

TITLE_xx

param_fmt: utf-8
param_max_len: 0x80 (128 bytes)
param_len: variable

Used by: PS4 Game Data

Same than TITLE but for localized languages.

An .SFO can contain several TITLE_xx where xx is a number for a regional code.

The "default" TITLE is always present when other "localized" TITLE_xx are used.

VERSION

param_fmt: utf-8
param_max_len: 0x8 (8 bytes)
param_len: 0x6 (6 bytes)... or 0x3 (3 bytes) when used in trophy

Used by: PS4 Game Data

Version content of the game: Disc revision, or Package revision. The number increases when the content is re-released or re-packaged for whatever reason that doesn't affect the main executable (e.g. when a disc game reaches platinum sales, or "game of the year edition" including extra contents).