Used OBDSTAR H108 to do Citroen cluster calibration via OBD perfectly and easily, what I need to do is do what the screen display tells me to do.
Plug OBDSTAR H108 to the Citroen BSI.

Select”Cluster Calibrate”.

Citroen

Select “BSI”.

Auto select

If auto select failed, select “manual select”.

Select “JC BSIO4EV-KOX”.

Switch ignition on

Select “Read EEPROM”.

Please enter a filename to save, press the “ENT” button.

Operation success

Press the “ENT”.

Read Flash…

Press the “ENT” button.

Read Flash success.

Press “ENT”.

Press “ENT”.

Press “ENT”.

Input a new value.

Success.

Done.
Perfectly, I am very happy with this OBDSTAR H108, it doesn’t let me down. I highly recommend it.