Hallo,
ich hab nochmals drüber geschlafen :) und es hat jetzt funktioniert. Für alle die nach der Installation der “developer tools” keine apps/updates mehr installieren können, hab ich im folgenden meine Lösung aufgeschrieben.
If you get the error message rpc:s-7… in google play store after the installation of the “developer tools”, than please follow this steps to fix this error.
First of all, i did a factory reset on my TV to install the terminal emulator. If you have the terminal emulator on your TV installed, than you can try to enable the possibility to install apk’s from unknown source with a factory reset. (If it is not installed, than you have to do a factory reset first!)
1) Download “terminal emulator” from google play store
2) Open “terminal emulator” and paste/write this without quota “am start –user 0 -n com.android.settings/.SecuritySettings”
3) Enable unknow sources in the settings menu
Next step, follow the install guide on this site again:
4) Install “developer tools” from google play store
5) activate “USB Debugging” and “show more apps in google play store”
6) reboot the TV
7) install the “ADB Wireless (no root)” from google play store
8) enjoy and feel free ;)