I would like to give you a little more info since your condition could also be as far as the dreaded EMMC brick bug. Best to do a Soupkit setup all instructions found here http://forum.xda-developers.com/show....php?t=1850038
. Once setup you will launch firekit which is nicely coded into this super utility. After firekit is running you will choose usb fix parts install fff and twrp script, simply copy the code written in the terminal for this script paste to terminal and hit enter. When it says waiting for Omap4430 device, plug your powered off device to pc. The script will run through some stages and preferably complete. If your lucky this will install a very old version of TWRP and FFF to your device, old but fuctional. There`s a small chance you could run a restore to stock from this point another great feature of Soupkit. If it throws scores of errors you may have to move to a more aggressive stance. Here are the instructions to recover from a EMMC brick http://forum.xda-developers.com/show....php?t=2413453
very technical stuff and surely not for the faint of heart. Since your device is showing up as Omap4430 no need to open back case to perform shorting trick during firekit process because as soon as firekit detects it as Omap4430 it will run through good luck!!