Haven’t worked with 13xx, but are you trying to debug the code that is loaded to the flash?
In that case try to connect to the serial bootloader and erase flash memory (and all the protection fuses that can be deleted that way).
Haven’t worked with 13xx, but are you trying to debug the code that is loaded to the flash?
In that case try to connect to the serial bootloader and erase flash memory (and all the protection fuses that can be deleted that way).