Do you have busybox installed? If not you'll need that and I personally recommend and app called busybox on rails. Also try uninstalling the app. Then take the apk, put it in the system/app folder. Change permissions and restart. After that go to the app drawer and select Viper. You must have some internet connection. Viper will ask to update and reply yes and answer the other questions it ask. Then restart again. And it should be working. Also I'm sure you know that it requires root. Hope this helps.
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