(Kingo Root) Root Razr m Having Kitkat

Go to
www.kingoapp.com/
Find the software (Windows) connect via usb debugging and start.
Voila
Done

if razr maxx can use razr slim version?

hi. i havr droid razr xt912 maxx and im using it.. its kinda bulky. and also i have a xt912 not maxx and its not working. its has a brandnew battery though i use it for a while coz the phine itself cannot open.
my question is.. if i transfer the battery of my broken razr xt912 to my razr maxx becoz though it has a 3300mah its not efficient anymore. so i want to know if i can transfer my slim battery and its back case to my razr maxx.. sory if its confusing.. TIA