Yes, you can download Android Marshmallow from the Google Play Store.

Yes, you can manually upgrade your Android version by going to Settings > System > About Phone and tapping on the Version number 7 times.

Android Marshmallow is the latest version of Android and it is still supported by many devices.

Android 5.1 is still supported by many devices, but it’s not as common as Android 5.0 or 5.0.1.

Yes, Android 6.0 1 can be updated. However, it is not yet available for download from the Google Play Store.

There are a few ways to get the latest version of Android on your old phone. You can update your phone’s software using a computer, or you can use an app like Android Auto to install the latest version of Android on your phone without having to use a computer.

There are a few ways to upgrade your Android device to the latest version, Marshmallow. You can either upgrade through the Google Play Store or use a custom recovery such as TWRP.

There is no direct upgrade path from Android 5.1 to Android 6.0 on the Oppo F1s, but there are a few workarounds that may help. First, you can try downloading and installing a custom ROM, such as LineageOS or Resurrection Remix. This will allow you to use newer versions of the Android operating system without having to wait for official updates from Oppo.

Android 7.0 Nougat is no longer supported. Android 8.0 Oreo is the latest version supported.

To determine if you have Android Marshmallow, you can check the build number of your device. If the build number is MMB29M, then you have Android Marshmallow.