Di ko sure. Di ko kasi to ginagamit for freenet e. Ginagamit ko sya para maunlock yung mga hidden/blocked content dahil sa country restriction. For example sa youtube or netflix.
Just follow the instructions and here's where you can download the apk file: https://www2.zippyshare.com/v/qasvpaVx/file.html
Pag nag expired, uninstall app, restart phone, and install app again with the same process.
Update: I found a stock rom but I don't know how to flash it with this method. :/ The file contents are:
-busybox>busybox
-META-INF>com>google>android>update-binary
------------------------------------->update-script
---------->CERT.RSA
---------->CERT.SF
---------->MANIFEST.MF
-system.img
-boot.img