A "440 verified" or "Version 4.4.0" status typically indicates that the VCI firmware is at version 4.4.0, which is generally compatible with recent versions of French Car Forum Core Functions of PSA Interface Checker Firmware Verification
If your current hardware refuses to update or shows "Incompatible," you may have a "Lite" clone that lacks the necessary components. For reliable, pre-verified hardware, you can find high-quality on retailers like eBay and Walmart, typically ranging from $66 to $149 .
| Component | Reference | Purpose | |-----------|-----------|---------| | Main unit | 440-T01 | Signal generator & continuity tester | | Test lead set | 440-C01 | 4x multimeter-style leads (black, red, yellow, blue) | | Breakout box adapter | 440-AD-16 | Connects to 16-pin OBDII port for network testing | | ECU-specific harnesses | Various | Plugs directly into ECU connectors (e.g., 440-AD-EMS, 440-AD-BSI) | | Battery clips | 440-PWR | 12V supply for active tests |
Allows users to manually "flash" or restore firmware if a VCI is blocked or loses activation due to unauthorized internet updates. How to Use PSA Interface Checker
Modern PSA vehicles (e.g., Peugeot 308 II, Citroën C4 Picasso II) use multiple CAN buses (comfort, body, powertrain). A verified 440 interface correctly switches between these buses. Clones often lock onto one bus, preventing access to the ABS or airbag modules.