Hello Claudio,
At first, please, try to connect the board by a procedure below:
1. connect the hardware with PC
2. start "Hiwave.exe"
3. go to menu Component -> Set Connection and select PE multilink -> OK

4. go to menu HC12MultilinkCyclonePro -> Set Derivative and select your MCU
5. go to menu HC12MultilinkCyclonePro -> Connection check connection -> Connect
6. menu File -> Load Application and import .s19 file.
Note: for the first time after point 3. I have seen an error, but after that, I can select the right MCU.
I hope it helps.
Best Regards,
Diana