Critical Issue
Description
In the Quartus® II software release version 14.0, the polarity
of the chip enable signal scein in the serial flash
loader (SFL) is erroneously inverted. When compiling your SFL design,
the software will generate the following error message: "IP upgrade
is optional. If you upgrade this IP you may also need to update
this IP in your design due to a port signature change."
Resolution
This issue is fixed in the Quartus II software release version 14.0 update 2.
There is no workaround for Quartus II software release version 14.0 or 14.0 update 1.