So I got this to reprogram Kyber Crystals from GE/Disney. It reads the crystal fine, but every time I write a new value it says the write failed. I tried about 10 times and always couldn't write, but then when I read the crystal it had a new meaning. I've done this a couple of times and it definitely wrote the value, but it takes a bit of "glitching" to actually change the value. So I would classify this as your mileage may vary.
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