Es tan sencillo como fijarse en los ficheros XML que están dentro de la ROM.
En KitKat 4.4.4, había uno que se llamaba:RETAIL-EU_4.4.4_KXB21.14-L1.40_36_cid7_CFC_1FF.xml (o similar si es de otro país/región), y dentro hay:
[PHP]<?xml version="1.0"?>
<flashing>
<header>
<phone_model model="QC8x26_CFC" />
<software_version version="falcon_reteu-user 4.4.4 KXB21.14-L1.40 36 release-keysMSM8626BP_1032.390.81.01P" />
<sparsing enabled="true" max-sparse-size="268435456" />
<interfaces>
<interface name="AP" />
</interfaces>
</header>
<steps interface="AP">
<step operation="flash" partition="partition" filename="gpt.bin" MD5="6ea6aca97ff0a385aadd21dfe3af650a" />
<step operation="flash" partition="motoboot" filename="motoboot.img" MD5="87b36a8a9fb67cdd7e1f3f3f26e669ca" />
<step operation="flash" partition="logo" filename="logo.bin" MD5="ec4333cee6df4da225664fed23de05f0" />
<step operation="flash" partition="boot" filename="boot.img" MD5="c5457faf990277dc3ef22e947ab626af" />
<step operation="flash" partition="recovery" filename="recovery.img" MD5="d57370b2da889a78db577fe58586925a" />
<step operation="flash" partition="system" filename="system.img_sparsechunk.0" MD5="cb2255a860195cefcdadd91b2669b46d" />
<step operation="flash" partition="system" filename="system.img_sparsechunk.1" MD5="8746c001c5a70e2fac47ccd2dd1a15d9" />
<step operation="flash" partition="system" filename="system.img_sparsechunk.2" MD5="bcb5634fa7620ff35e4af06b5af7af98" />
<step operation="flash" partition="modem" filename="NON-HLOS.bin" MD5="a1ba6df8c0a6506925d4365b664b79d3" />
<step operation="erase" partition="modemst1" />
<step operation="erase" partition="modemst2" />
<step operation="flash" partition="fsg" filename="fsg.mbn" MD5="7cf7fb7084331a351297301bb5094dcc" />
<step operation="erase" partition="cache" />
<step operation="erase" partition="userdata" />
</steps>
</flashing>[/PHP]
Si quitas 'la paja'... se ve:
[PHP]<step operation="flash" partition="partition" filename="gpt.bin"
<step operation="flash" partition="motoboot" filename="motoboot.img"
<step operation="flash" partition="logo" filename="logo.bin"
<step operation="flash" partition="boot" filename="boot.img"
<step operation="flash" partition="recovery" filename="recovery.img"
<step operation="flash" partition="system" filename="system.img_sparsechunk.0"
<step operation="flash" partition="system" filename="system.img_sparsechunk.1"
<step operation="flash" partition="system" filename="system.img_sparsechunk.2"
<step operation="flash" partition="modem" filename="NON-HLOS.bin"
<step operation="erase" partition="modemst1"
<step operation="erase" partition="modemst2"
<step operation="flash" partition="fsg" filename="fsg.mbn"
<step operation="erase" partition="cache"
<step operation="erase" partition="userdata"[/PHP]
Ahí tienes los comandos que habrá de ejecutarse con "fastboot" (mejor mfastboot).
Así que finalmente te queda, limpiando un poco más y poniendo mfastboot:
[PHP]mfastboot flash partition gpt.bin
mfastboot flash motoboot motoboot.img
mfastboot flash logo logo.bin
mfastboot flash boot boot.img
mfastboot flash recovery recovery.img
mfastboot flash system system.img_sparsechunk.0
mfastboot flash system system.img_sparsechunk.1
mfastboot flash system system.img_sparsechunk.2
mfastboot flash modem NON-HLOS.bin
mfastboot erase modemst1
mfastboot erase modemst2
mfastboot flash fsg fsg.mbn
mfastboot erase cache
mfastboot erase userdata[/PHP]
Y no tiene mayor misterio.
Ahora sólo hay que hacer lo mismo con el que viene en la de LP (flashfile.xml).
