How to upgrade E2 on the Amiko Alien/Alien2 models

I am newbie to Linux and spark having had Humax 5400 for years. Although still going I am interested in seeing if I can get my head around this new stuff. What can all these images provide and in particular what do they add to Amiko, esp TS Media, which I was interested in using to get more German channels other than the existing FTA such as ARD and ZDF. I wld be interested in the Amiko one tuner as it is made in Germany and has browser facilities. Thanks. Shadow007ni