To the untrained eye, devdata.dat looks like any other generic data file. But inside, it is a structured database—a hybrid between a configuration script and an encrypted spreadsheet. This file controls hundreds of "under-the-hood" parameters that EA developers used during testing and debugging, but which were never meant to be exposed to the average player.
: Double-click OEMName and change the value data to a controller that is fully supported by the devdata.dat file natively, such as Logitech Dual Action . Method 2: Manually Editing Devdata.dat Devdata Dat Fifa 09 19
and beyond), this tool would allow players to import their custom To the untrained eye, devdata
| Game | Mod Name | Key devdata.dat Change | Result | |------|----------|--------------------------|--------| | FIFA 09 | "Ultimate Arcade+" | SHOT_POWER_MAX = 200 (was 100) | Rocket shots from 40 yards | | FIFA 09 | "Realistic Career" | CONTRACT_NEGOTIATION_HARD = 1 | AI rejects unreasonable offers | | FIFA 19 | "No Scripting Patch v2" | MOMENTUM_DISABLE = 1 | Removes comeback logic | | FIFA 19 | "Classic Camera Pack" | CAM_BEHIND_GOAL_ANGLE = 35 | Broadcast-style replays | | Cross-Gen | "09 Physics on 19" | BALL_AIR_RESISTANCE (09 values) + PLAYER_MASS (19 values) | Hybrid ball trajectory | : Double-click OEMName and change the value data
The most notorious problem fixed by devdata.dat is the “EMPTY” button issue. When FIFA does not recognize your controller, several key functions—often through balls, lob passes, or skill moves—appear as “EMPTY” in the control configuration screen. These buttons cannot be assigned. Manually editing devdata.dat to include a properly formatted entry for your controller resolves this permanently.
Here is a complete walkthrough to get any gamepad working in FIFA 09 through FIFA 19 using devdata.dat .