The replacement file used in the Prof IoT post is attached to this article.
There is an incompatibility between IAR Embedded Workbench for Synergy 7.71.3 and the J-Trace. When attempting to use the SEGGER J-Trace with this version, developers will receive an error that states "User Error: No trace frequency measured. Check the trace connector". This incompatibility has been resolved in later versions, but if 7.71.3 is still being used, this R7FS7G2x.dmac file can be pasted into the <EWSYN 7.71.3>\arm\config\debugger\Renesas folder. This will replace the existing file and resolve the issue.