It is the same installer for both Lightroom CC and Lightroom 6. Since you have activated with a serial number the update installation will install accordingly.
My installed standalone LR6 (not cc version) stays as version 6. I need to read Sony RM-10 raw files. Try update. It went to install cc.
Download v6.6.1 here and apply the update - Install Photoshop Lightroom
I am not a Sony user, but my search shows the RM 10 to be a remote commander. Exactly which camera files are you trying to view?
You can view a list of cameras supported by Lightroom here: Cameras supported by Camera Raw
I am not a Sony user, but my search shows the RM 10 to be a remote commander.
It is probably RX-10 ??? version unknown but probably II or III if they need Lightroom v6.x