Installation of the rom aborted topic

I am using an Atrix HD with CM 10.2. I tried to install CM12 for MB886 but it says that my phone is XT925. It's strange because the CM 10.2 I have installed was for MB886. BTW I tried to install CM12 for XT925 but the installation is still aborted but now because of the bootloader. What should I do to install CM12?

Thanks for the reply!