POS PSIM 2.0 is compatible with Axxon PSIM 2.0. For the detailed information about the compatibility of product versions, see here.
You can download the current version of the POS PSIM 2.0 distribution package from the AxxonSoft official website or request it from technical support at support.axxonsoft.com.
When you update from an older version of POS PSIM, you don't need to uninstall the previous version, as the new version is installed over the old version. For details, see Installation.