2026/09/06

OBDSTAR G3 Unlock Citroen 2023 MD1CS003 ECU in Boot

OBDSTAR’s recent big upgrade adds PSA locked MD1CS003 ECU boot glitch unlocking feature.

Here comes a user report:

Just tried one Bosch MD1CS003 from a Citroen Berlingo 2023, worked first try.

It’s done in boot mode. OBDSTAR X300 Classic G3 unlocked in boot glitch mode.

Need to have soldering skills.

Open ECU, remove 1 resistor and solder C4-06 adapter.
Requires G3 with ECU Flasher license activation and connecting MP001 programmer.

DC706 and ECU Master will do the same.

Automatic checksum correction with G3.

Adblue off ok.

OBDSTAR G3 Unlock Citroen 2023 MD1CS003 ECU 1

OBDSTAR G3 Unlock Citroen 2023 MD1CS003 ECU 2

OBDSTAR G3 Unlock Citroen 2023 MD1CS003 ECU 3

OBDSTAR G3 Unlock Citroen 2023 MD1CS003 ECU 4

OBDSTAR G3 Unlock Citroen 2023 MD1CS003 ECU 5

OBDSTAR G3 Unlock Citroen 2023 MD1CS003 ECU 6

 

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