[Amine13]

la procédure est décrite ci dessus.
Source TACHOSOFT Mileage Calculator 20.1:


Car type: Peugeot 307 (Dash+BSI) - 68HC912DG128 - 2002 year
The mileage is stored in the next lines:
Dash manufacturer is Sagem, BSI is made by Valeo
0670: xx xx xx xx xx xx xx xx FF F0 AD CF xx xx FF F0
0680: AD CF xx xx FF F0 AD CF xx xx FF F0 AD CF xx xx
0690: FF F0 AD CF xx xx FF F0 AD CF xx xx FF F0 AD CF
06A0: xx xx FF F0 AD CF xx xx xx xx xx xx xx xx xx xx
where the next bytes:
FF F0 AD CF - is a mileage

Instruction: read the 68HC912DG128 chip from the BSI (Valeo), and
edit the mileage as shown here. Then connect dash to the connectors .
on the car WITHOUT the BSI. Put the key to the ignition, but do not start!!!
just power on the dash. Dash value will self deletes.
After this connect the BSI and km value will be automatically loaded from BSI to dash.