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In case you are upgrading a ROM, you might or not need to install the GApps but it is always good to ensure that you have the latest package installed on your device. Please note you will have to flash the Google Apps package every time you install a new custom ROM.
DOWNLOAD GAPPS FOR CM11 ANDROID 44.4 UPDATE
If you have update a single app, you can do it easily, but if there are many updates, it is better to find the latest GApps for your OS version and flash them via a custom Recoveries program like ClockworkMod Recovery or TWRP. If any of the Google apps receives an update, your device notifies you to install the new version via Google Play store. The apps by Google are updated to implement new features and updates. Most of these apps can be downloaded directly from the Google Play Store itself. Some of the apps that form the Gapps package include the Google Play Store itself, Google Talk, Google Sync (for adding and synchronizing Google accounts), Google Backup Transport, Car Home, Gmail, Google Maps, YouTube, Google Search, Google Voice Search, Google Music, Google Currents, and Google Docs. I have gone through such a situation while using a custom ROM on my Galaxy S2 last year. Suppose you have flashed a custom ROM on your Android device and feel later that any of the Google apps is not functioning properly. There is another situation when you might need to manually flash the Google apps on your Android device. To have those Google apps, you need to flash them separately via CWM Recovery or some other custom Recovery. While most stock ROMs come with Google Apps pre-installed, it has now become a fashion among the custom ROM developers to provide a separate GApps package rather than include it inside the ROM. Well, there might be three possible reasons to do a manual installation of the Google apps package. Today it is almost impossible to imagine a happy mobile life with these apps by Google. Half of the charm of the OS lies in the fact that it integrates apps like Google Search, YouTube, Gmail, Google+, Google Maps, Google Play, Google Sync and Google what not. Being a Google-powered OS, Android lets you enjoy the amazing services from its owner on your smartphone more intuitively than on any other platform for mobile.
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