Hello Saragani,
I have succesfully restored the PLC.
I used Visilogic Version 7.
Downgraded the PLC, only this time complete including the bin lib and boot.
From here I downloaded an empty application.
This took several retries and reboots, but eventually the empty program was in.
After this I went back to Visilogiv Version 9.4.
I upgraded the PLC to the current bin, boot and OS.
From here the PLC was working again.
Thanks,
Stefan.