Installing rom on Razr i xt890

hi,

can someone please help.. my phone stopped booting up all of a sudden. I am trying to install this CFC_9.8.2I-50_SMI-29_S7_USASMIJBRTGB.xml which i downloaded from a thread on this forum using rsd lite v6.1.5

I get the following error..

AP Fastboot Flash Mode (Secure boot)
20.25 (sh - dae73d6)
IFWI Info: 42.26
eMMC Info: Size 8GB
Barcode: TA32407FJN
Battery (OKay): 3.70v (temp 37)
Transfer mode : usb connected
Rom-Key: Motorola-Key
Modem Status: Secure

Boot Mode Selection menu
......

Fastboot Reason:
fastboot: max download size: 100MB
USB Connected
Getvar max-download-size
Downloading
downgraded security version
update gpt_main version failed
preflash validation failed for GPT
Fastboot command failed.


Can anybody help? not sure what i am doing wrong. I am a noob.

thanks.