ID:20277 The bitstream that generated by Quartus Prime software v18.0 or earlier will no longer be available on the device after you program the root key (*.qky) of the target device. Do you want to continue the operation?

CAUSE: The Quartus Prime software is asking whether or not you want to program the root key of a device. The bitstream that generated by Quartus Prime software v18.0 or earlier will no longer be available on the device after you program the root key of the target device.

ACTION: Click Yes to program the root key, or click No to cancel the operation.