Problem with HPS40

I have an HPS40 with 060301720 serial number( at work). During a simple measure (0-5V), display changed and most characters was replaced with black band. I switched off and on but didnt boot correctly(velleman sigla doesnt appear)and in all views are corrupted characters and the measuring circuit didn work. I suppose the flash memory is corrupted. Im engineer from Romania. It exist a reload procedure?

This probably happened due to an overvoltage at the input.
The unit is not user servicable. Please return it for inspection/repair to:

Velleman Instruments Repair Dept.
Legen Heirweg 33
9890 Gavere