According to HP KM article KM1205377, Sprinter 12.x and higher make use of port 8085 as a default, which can be changed. As you mentioned, the 11.x versions used port 8080.
Per the above article:
***Range from 9000 to 9009. If any of these ports are unavailable in your organization, some Sprinter functionality will not work. For example, when trying to connect to a mirror machine, the error message ''Could not find the machine on the network'' will be displayed if these ports are blocked.***
***About ports enable HP ALM to communicate with Sprinter. It also uses ports when in Power Mode to work with your primary machine and to communicate with your secondary machines when using mirroring feature.***
Document ID KM00482049 goes over how to change the Sprinter ports if you need assistance with that.