The French Simracer Lap Timer V2 Mode D'emploi page 9

For starting a firmware update, you must use the
folder "Firmware". You need to know the COM port of your laptimer v2.
Upload time : 16 minutes
Firmware update
To know the COM port determined by your computer, make
sure that the
ports already registered
will have a new element in the list,
dedicated to the laptimer v2 by deduction
Flash_TFS_LapTimer_v2.tft
Open the Device Manager
Laptimer v2 is disconnected, note or retain the
then connect your laptimer
in the
v2, you
so you have the port