Hi person. My name is Straight Talk Lindsay. We cannot upgrade the phone’s operating system. However, Google will send a notification once an updated version of your phone’s operating system is available. Thanks.
Yes you can update your current model to mashmallow by following steps given in Motorola MOTO E Manual- guideusermanual.com/product-name-moto-e-manual&po=505898&lang=English. This might surely work for you.