Post graduation or new technology?

Question

Hello,my name is pulkit, currently working in MNC as a senior software engineer with an experience of years in DoT Net. My learning is process is stagnant now days. So, i am thinking of pursuing master's so that i can become capable enough to understand and design solutions to real time problems.I am in dilemma whether i should go for masters from abroad or learn latest technologies like angularjs with MEAN stack. And if master's then in which course i should go for.