upp and ibrakalifa, If you get an error during installation, try to: 1. Try to close all other app and try to install again or 2. reboot your phone and try to install again or 3. uninstall previous version and try again About backup: 1. you need to create backup only once (upp, you don't need, because you have my) 2. You don't need create backup when you install updates 3. from the first post: