i have two xt910 phones one is Razr and other is Razr maxx

i use bmm in razr and i formating my system for install pacrom after restart my phone dosent boot !!
i go to ap fastboot than i conected to rsd lite than i see rsdlite dosent know my phone !!!
i coneccted my razr maxx and everthing was ok
so how to fix my razr ?