Tested in PurE2 (Zgemma H7S), writing from memory... :)
0) install PurE2
1) MENU > Plugins > green button > Extra > install it and EXIT...
2) MENU > Plugins > green button > CamDs (first section) > OSCam Emu latest
3) then, from the same place, "OSCam Emu Config Mario" and edit the 3 main files with your specific details
4) MENU > Plugins > CamDs > Softcam.key downloader > Exit...
Go to Plugins > Keys files are downloaded via SoftCam.Key downloader -> they go to /etc/tuxbox/config folder.
Note: sometimes they change keys often, so it may not always be up-to-date, sadly... we all have lives, ergo we do it whenever we can... Usually one can find fresh keys online... ;)
Once you choose a PV channel you may need to wait a little, sometimes up to 5 mins to start working - after that it's cool...
Both AFN at 9E and the 4.8E work without having to go to a FTA channel in between changes and so on...
Praise be to Mario! ;)
Edit the XXXXXX, if you are using the files I attached to this post, which are edited by me, after some testing...:rasta2bigsmoke0gf1:
P.S. Zgemma H9x/H9.2x line works with AFN at my end but not on 4.8E - at least the channels that I have signal for... :rasta2bigsmoke0gf1: