Bricked 64 Gameshark

[gudenau]

I have three Nintendo 64 Gamesharks, one of which is a 2.X and two others are 3.X. One of which has a parallel port on it, and this is the one that is bricked. All it does is light up all of the 7 segments on the display, but if I stack them the bottom most one works fine but it does not unbrick the middle one (which is the bricked one). I have tried all of my carts and none of them changed anything. I bricked the cart by turning the 64 off while dumping memory on Super Mario 64, turns out my impatience was a big problem.

Any idea what I could do to fix this, I am looking into using hardware on the flash chips but I want to try without buying even more hardware.