[Q] Bricked chinese tablet ( Fastboot only ) topic

Hi everyone , I was not sure where to post this so i'm sorry if this is in the wrong place , so i just found a bricked tab and the guy who owned it gave it to me because he said its completely screwed , its a LAVA E-tab z7c . So right now if i try to switch it on , i see a screwed up boot image , half of the screen has random colors and the other half displays android. On holding the power button and the volume down i got to the fastboot mode. I found the stock ROM online and tried to flash it using
1>"fastboot -w "
2" fastboot flash zip update.zip "

OUTPUT -->

root@txjoe:/home/txjoe/Downloads/revoc/a# fastboot flash zip update.zip
sending 'zip' (210762 KB)...
OKAY [ 19.879s]
writing 'zip'...
FAILED (remote: partition table doesn't exist)
finished. total time: 19.881s

Now , i can't really find any custom ROM's or Recoveries for this tab. And im still stuck at fastboot , no adb access !
Can anyone help me out ? is this tablet dead yet ?