Once you have a Marshmallow ROM installed, you might find that basic apps like the are missing. Most custom ROMs do not include Google Apps for licensing reasons.
These smaller packages are designed to transition a device from one specific software version to the next (e.g., Android 5.1.1 to 6.0). They require a specific baseline firmware version to install successfully. android 6 download zip file top
Download the correct TWRP image for your specific device model. You will flash this to your recovery partition using a computer and commands. Step 4: Transfer the Zip File to Your Device Once you have a Marshmallow ROM installed, you