Download IAR Embedded Workbench

Install IAR Embedded Workbench

Install IAR Embedded Workbench 9.70.1 by double clicking the downloaded installer file ewarm-9.70.1.exe.
Follow the steps and at below screen, recommend to keep install directory as default.

IAR Embedded Workbench Install Path
Follow the installer instructions until the installation is complete.
Once installation is completed, Launch IAR Embedded Workbench IDE.
To configure your IAR License, navigate to the Toolbar, then select Help > License Manager

Navigate to Tools > Configure Viewers
Click the Import button
Navigate to SDK directory
Select the configuration file located at {SDK_INSTALL_PATH}/tools/iar/sysconfig_iar_setup.xml
Click OK to save changes

IAR Configure Viewer

IAR Embedded Workbench does not natively support the execution of GEL scripts. These scripts are used by Code Composer Studio (CCS) to initializing SOC, clocks and other registers during the startup of debugging session.

Workaround - Use SBL NULL for device Initialization

Flash the SBL NULL binary to the target board before loading your application program or starting the debug session.
The SBL NULL bootloader performs essential device initialization steps similar to what a GEL scripts do.
Refer SBL NULL

IAR Embedded Workbench lacks built-in support for loading and simultaneously debugging multi-core processors when using TI's XDS110 debug probe.

Workaround - Use Code Composer Studio (CCS) for Loading and Debugging

The most recommended solution is to use Code Composer Studio (CCS) for the loading and debugging, even if you prefer to build your multi-core projects in IAR.
Build your multi-core project within IAR Embedded Workbench to generate the executable output file (.out).
Switch to Code Composer Studio to load .out file onto the target device.
Refer Load and run example binaries in CCS