You should not start synctool after connection with your usb-stick.
After starting your unit you must connect your usb-stick which you did prepare as it was described on page 10 from ASD255 to USB1 from your unit,
After a short time your unit will reboot into the testmode.
At the menu point File Maintenance you can enter the Filesystem and navigate to the folder speedcam from linuxroot to copy the SpeedcamUpdates.spd into this folder.
The filename must be exactly written as i did it.
After this you have to disconnect your stick and reboot your unit.
Caution, do not erase anything to prevent a brick of your unit.
If you are not strong in managing filesystems let do this better by an IT-specialist.
Hi Bernd,
i found in speedcam folder(unit) a spud file, should i leave it or remove it?
thanks