Remote control your Telekom / T-Systems Entertain Media Receiver 303 with your PC, Raspberry Pi, FHEM, OpenHAB ...
- root your Android-device
- install Entertain RC on Android-device and connect the app with the receiver https://play.google.com/store/apps/details?id=com.t_systems.ctv.android
- get apk-file /data/app/com.t_systems.ctv.android-1.apk from Android-device
- unpack the apk and extract the classes.dex with dex2jar from https://github.com/pxb1988/dex2jar
- read companionId and key from /data/data/com.t_systems.ctv.android/shared_prefs/ctv_prefs.xml from Android-device and put them here
- compile this file with "javac MediaReceiverRemote.java -cp classes-dex2jar.jar:."
- run it with "java -cp classes-dex2jar.jar:./ MediaReceiverRemote command poweron" and your receiver should start
- Play stationId