This is strange, because I tried to install several versions and I didn't encounter any problems.
According to your error message, it keeps showing that some dependent packages cannot be installed. This is could be likely related to your network.
My suggestion:
1. Reinstall S32 Design Studio for ARM 2018
2. Try some new networks and then try to install the IAR plug-in agian
If it still doesn't work, you can try to install S32 Design Studio for ARM v2.2, and then try to install the IAR plug-in
This is strange, because I tried to install several versions and I didn't encounter any problems.
According to your error message, it keeps showing that some dependent packages cannot be installed. This is could be likely related to your network.
My suggestion:
1. Reinstall S32 Design Studio for ARM 2018
2. Try some new networks and then try to install the IAR plug-in agian
If it still doesn't work, you can try to install S32 Design Studio for ARM v2.2, and then try to install the IAR plug-in
I tried to install EMF 2.13 as you suggested, still I have same trouble. Its showing operation can't be completed due to some missing requirement. details are given below snapshot.
In the link you provided, you can see such description.
Manual installation using the "Install New Software..." dialog
The plugins can also be installed directly using the Install New Software... dialog, without using the plugin manager. To do this, you need to first lookup the update site to use which is compatible with your version of IAR Embedded Workbench version. When you have the correct update site, proceed with the normal Eclipse plugin installation procedure. Please refer to Eclipse documentation for additional information.
Attaching the error message:
Please try to install EMF 2.13 than try again, seem it also useful on myside.
