A big thank you to kostia111, he provided the correct password for us to recover our bricked ECU saving buying and programming another. FYI there is no other way of calculating the password other than from the label itself. EEPROM/Flash etc are all useless.

We have come across a few instances of needing the password, usually quicker to program a donor ecu to car. Would love to revive the few dead ecus we have.