I have a g350-u00 device that was shipped with JB 4.1.2 but without Gapps. To add Google account, I rooted the device and copied .apk files to /system/apk from gapps package http://goo.im/gapps/gapps-jb-20121011-signed.zip. After a couple of hard resets I have a working system with Gmail and Play Store. The latter fails to install any app with toast "invalid download uri". How can I cure the system?