Xiaomi Redmi 1S is another device which can be updated to Android 6.0 Marshmallow via CyanogenMod CM13 custom ROM. This is an unofficial way of updating your device but as we know that it is going to take long time till the official update is available for the device, and may be the device does not get the update due to some reasons.
So, if you own a Xiaomi Redmi 1S then instead of waiting longer for the official Android update to be available, you can try out this AOSP custom ROM from CyanogenMod. It is much stable, but as this the first release it might have some bugs which will be eliminated in further updates.
Now, those who wish to update their device can follow the step by step procedure below.
Preparing your Phone
- This instructions are only for Xiaomi