how to flash xt-907

how to flash motorola xt-907 when it is hang on logo and how to identify which firmware i install with rsd ,boot loader also locked
here detail
ap fastboot
10.9b(*)(sha-1e9f557,2012-10-21 17:10:35
emmc info:8gb
device is locked, status code:0

thanks in advance

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how to flash xt-907