The signed apk works fine, just make sure you are using a 64 bit android (emulator). I tried unsigning the signed one from blackmod, but the result is that it will only crash on startup, so it doesn't really work. I personally don't like the idea of starting over again like every update so if someone figures out a fix to the unsigned apk crash, do tell. I could not attach my unsigned version, but all I did was the regular unsign method, which is just to drag the "lib" file out of the archive, delete the one present, then replace it.