How to install?
How to install Speedy Quark VPN – VPN Master 1.6.7 (No Ads)?
Before start: Download and install XAPKS Installer (if you haven't install it).
1. Download the file Speedy Quark VPN Original_v1.6.6_ApkModo.apk.
2. Open XAPKS Installer.
3. Tap Install -> Select Speedy Quark VPN Original_v1.6.6_ApkModo.apk.
4. Tap OK.
5. Follow the steps on the screen.
How to update APK without lose the data
If you uninstall the old version before installing the new one, you will lose all your data. To preserve your data, never uninstall old versions. Just install the new version overriding it.