Ah I think you're right, it flashes up 0xADB0 (0xAD is the manu. ID for Hynix afaik). But I'm not sure what to do now, I've redone the soldering so many times (testing with trying to flash rather than just the multimeter) and every time I've had the multimeter saying between 0.1 and 0.5 ohms resistance, and it hasn't worked. I'm not sure how else to test when I've got it right.