The Huawei Honor 6 is now being updated to Android 6.0 Marshmallow. Users in India are reporting receiving the OTA update, which weighs in around 700MB and updates the build number to H60-L04C675B810 and the OS to the newest major release of Android.
The update is rolling out slowly for now and may not be available to all devices, particularly locked units which should get the update a bit later. You should check your phone to see if the update is available on your device.
go to settings and find system update download update and it will install automatically
Can I have marshmallow to B324
How I can update my honor6 b523 in pakistan