tutorial for flashing EMUI 3.1/Android 5.1 beta build | B108sp01 on 701 version

hi all
my x2 model is gem-701L ,and people here always talk about 702 and 703
is EMUI 3.1/Android 5.1 can be flashed on my device
if yes
i cant understand steps to do that
can any one help me with tutorial to flash
thanks for help