oscam version help

Yes, using subversion and apt-get:

OSCAM on Debian 9: possible?

If Oscam is already installed via svn, it will probably be enough to update it (download sources and compile).

On the Internet you will find a procedure for installing Oscam for each Linux distribution (usually the installation procedure is the same everywhere). It is best to compile your own and always the latest Oscam directly from the Streamboard server. SVN is also used for this purpose:

http://www.streamboard.tv/oscam/wiki/BuildingOscam