When using a JED file (instead of XSVF) to program the chip in Impact, the programming phase completes but verification phase fails. So most likely the chip is indeed broken.
Will try to get a new one from the vendor, if that fails I'll order some more from eBay. (they're cheaper there too, some Chinese/HK sellers there sell these for 3-4 euros a piece with free shipping)
Will try to get a new one from the vendor, if that fails I'll order some more from eBay. (they're cheaper there too, some Chinese/HK sellers there sell these for 3-4 euros a piece with free shipping)