"To power the handset" means to provide the necessary electrical energy or charge needed to operate a mobile phone or any electronic device used for making calls. Full definition
This is a quad core powered handset with 4G LTE support. (gogi.in)
It is a dual core powered handset with dual speakers that are uniquely placed on either side of the screen. (gogi.in)
But, even though the firmware isn't yet available, you can still apply the same on your device if you choose to manually install it on your Android powered handset. (android.gs)