Default [q] moto x xt 1058

Hi ,

I have bought a MOTO X 1058 from US and was using in india, delhi without any issues, however recently i had downloaded the latest firmware 4.4.2 on the phone, after which the phone is switching on and apps are getting started and after 30 secs it switches off again.

there is no error message, just phone is switching on and off. guys can you please help..i ahve shown it to service station in delhi but they cant help

someone was saying to dwonload RSD light, and then flash it... i am new to this thing so can someone please detail it out how to do so my MOTO X is live again...

thanks for the help

cheers