I feel for the OP, as I too, have hard bricked my tablet when I tried creating a swap partition via swapper. In my case, all black screen, no response when I try to power on the device, no nothing....
The only sign of life, is that when I connect the tablet to the computer via USB,i hear 2 faint beeps but then nothing....
Does anyone have any recommendations, apart from replacing the motherboard? I find it a bit too expensive, as its almost 2/3rds the price of a brand new tablet.
Does anyone know if JTAG will work on the LG G Pad 8.3? Also if anyone can recommend someone who can fix it, for a fee ofcourse
, please feel free to PM me. Thanks