Honored Contributor
Honored Contributorfrom one of the engineers:
A couple of issues here: If the CFI drivers required modification to work with his setup, then the flash programmer probably won't work either. The error he's getting isn't a "firmware can't talk to the flash" error. It's what happens when the flash programmer host can't communicate with the target. My guess is that this person has a couple of technical issues to solve before they can attempt to program flash. This should go to an applications engineer. You should point them at whatever App note talks about Quartus "optimizing" out your EPCS programmer when it's the only thing connected to your design.
