Windows Phone Marketplace demand for WP 7.5

Microsoft has announced that from now on App Store requires Windows Phone Marketplace for installation in smartphone operating system, Windows Phone 7.5. This OS update from Microsoft was released last fall and is available for all models of machines with OS Windows Phone. If this version of the OS is not installed on your smartphone, a user may not be able to download new applications or updates are already installed. At the same time to enter the app store itself is quite succeed, but do none of the above queries will fail. At the same time it is worth noting that the reasons for refusal to upgrade the operating system is negligible and most of the current devices on the market out of the box is Windows Phone 7.5.