Brother eu usei o tutorial que esta na tela inicial e tanto pelo Instalador quanto pelo CMD da erro, pelo CMD deu isso aqui,
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash logo logo.bin
sending 'logo' (1060 KB)...
OKAY [ 0.062s]
writing 'logo'...
OKAY [ 0.141s]
finished. total time: 0.203s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash boot boot.img
sending 'boot' (10240 KB)...
OKAY [ 0.375s]
writing 'boot'...
Preflash validation failed
FAILED (remote failure)
finished. total time: 0.797s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash recovery recovery.img
sending 'recovery' (10240 KB)...
OKAY [ 0.384s]
writing 'recovery'...
OKAY [ 0.909s]
finished. total time: 1.293s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash system system.img_sparsechunk.0
sending 'system' (249379 KB)...
OKAY [ 8.424s]
writing 'system'...
Invalid signed image
Preflash validation failed
FAILED (remote failure)
finished. total time: 8.799s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash system system.img_sparsechunk.1
sending 'system' (252566 KB)...
OKAY [ 9.434s]
writing 'system'...
Invalid signed image
Preflash validation failed
FAILED (remote failure)
finished. total time: 9.844s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash system system.img_sparsechunk.2
sending 'system' (249711 KB)...
OKAY [ 12.253s]
writing 'system'...
Invalid signed image
Preflash validation failed
FAILED (remote failure)
finished. total time: 12.532s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash modem NON-HLOS.bin
sending 'modem' (47152 KB)...
OKAY [ 1.887s]
writing 'modem'...
OKAY [ 2.171s]
finished. total time: 4.134s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot erase modemst1
erasing 'modemst1'...
OKAY [ 0.026s]
finished. total time: 0.026s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot erase modemst2
erasing 'modemst2'...
OKAY [ 0.069s]
finished. total time: 0.069s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot flash fsg fsg.mbn
sending 'fsg' (102 KB)...
OKAY [ 0.116s]
writing 'fsg'...
OKAY [ 5.350s]
finished. total time: 5.500s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot erase cache
erasing 'cache'...
OKAY [ 0.096s]
finished. total time: 0.097s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot erase userdata
erasing 'userdata'...
OKAY [ 0.996s]
finished. total time: 0.996s
C:\Users\anderson.jesus\Desktop\RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1
FF_SVC.xml>mfastboot reboot
e inicia o Lollipop novemente, já não sei mais o que fazer me ajuda e nem consigo instalar o TWRP que da erro tbm, então eu tento instalar pela recovery original da motorola :S
— alterado em 26/01/2015, 23:49:57
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