Thanks a lot Terry for the information!
I guess I pushed my luck too far then
As I said, learning the hard way... I just read an article from Nick Gammon explaining how to prevent this using a TI buffer, wish I had seen this before.
This chip was actually an Asus motherboard corrupted BIOS. I guess I came that close from fixing it before all hell broke loose (I had written 2048 of 4096 corrupted bytes back to it when it suffered an attrocious death
The thing is, this motherboard uses a bios chip package that is only available on special orders from Winbond (W25Q16BVDAIG), it was easy to install/remove from the motherboard since it isn't soldered - it uses an DIP-8 socket.
I have a new one in the mail coming from Asus - but I wished I could fix the corrupted one while waiting for the new chip to arrive... oh well, at least I learned a good lesson!
Next time I'll know!
P.S (Any idea if another chip with the same specs as mine could work on the motherboard - or is there anything that actually checks the chip Manufacturer/Device ID when it is plugged in the motherboard?)