Hello everyone, today I did the test that it could be used to activate Poweramp again first, the APK of Fiio, save it on the memory card and also download this version Poweramp-2.0.10-build-588-uni.apk Build 588 also in the memory card, first install the old version of Poweramp and already installed install the APK of Fiio and now it works again, I hope it works for you too. sorry for my writing. I'm not good with English.