The fact of the matter is you have a dead disk with a microcontroller on it that’s trying to run code it can’t, for whatever reason. I’m assuming it can’t even bootsrap itself into something that can be read by a terminal program.
I have no idea what file you flashed, or what was in the file. And I do not know how much was flashed… These are all uncertainties that can be properly fixed with pro-level tools only.
Typically at the very minimum you might get something called HD DOCTOR SUITE from SalvationData . This will give you the hardware necessary to bootstrap and flash the microcontroller & rom. You’ll also get access to the correct firmware. It’s been a while since I checked the price, but I’d estimate around $500-$800 for the kit.
There are could be other more time intensive ways of doing this manually, but I don’t take that route anymore. Time is money these days. And in this case, it’s best to just trash the drive and buy a new one.
