hi all
i have nokia n900 and iam trying to re-flasher
but when i open the cmd and type

flasher-3.5.exe -F RX-51_2009SE_20.2010.36-2.002_PR_COMBINED_002_ARM.bin -f

then the cmd open to fast and then its gun but i read the error

its say

To flash the bootloader, you have to supply the X-Loader image nokia n900

plz help me