I do not have the software for any of the Rontan products, sorry. I even checked all my files just to make sure I didn't download it by chance. I only have the ICM40 manual because our local police department was purchasing the Winglux lightbars and ICM40 interface modules for a little while.
You might try to contact RadioPhone
http://www.radiophonepse.com/contact-us They use to be a distributor, according to the website, and might still have a copy of the software.