Tablet [Q] Acer Iconia A1-810 Bricked after failed ROOT

Hi

Yesterday I tried to root my Acer Iconia A1-810

Android Jellybean 4.2.2
Firmware version RC27RC03


When I tried to root it using the toolkit here http://forum.xda-developers.com/show....php?t=2240029 it bricked .

I downloaded the "system img" file that was under the downloads section for the A1-810 and used this for the root .

I can get into android recovery "Power + volume up" and in there is Fastboot,Factory settings and demo mode .

I tried factory settings and the reset button on the side of the tablet but none of them work .

Does anyone know how to fix this brick ?

Any help will be greatly appreciated

Thanks