Program external memory
IAR Embedded Workbench has disabled external memory programming by default. The SMIF region in the *.board file must be enabled manually for PSOC™ 6 devices. To do that:
Open the Options dialog and select the
Debugger
item under
Category
.
Click the
Download
tab and select the
Override default .board file
check box.

Identify the default .
board
file currently used for this project.
Click the
Browse […]
button, then navigate to and select the same .
board
file that also includes "SMIF".
Click
Save
.
Click
OK
to close the Options dialog.