bricked venue 8 please help topic

I bricket my venue 8 trying to go back to 4.2.2 now it doesnt boot and i get a error trying to flash cwm recovery or something (Failed: flash_cmds)
I can get into fastboot and theres a tool that can help me fixing but i can't find it (iSoc and FSTSK) can someone help me?
Sorry for bad english.

error:

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