Foxflash read Citroen 2018 ok but when try to write and says error unlock password. How can i do to unlock?
You dont, this ECU has new Trot, probably dealer update, the password cannot be read for bench, you could try Tricore password and BSL.
Have to open ecu and do in boot mode.
You have to decode the tprot in your editing suite before writing flash. or car will not start.