indeed, and people are still using ref00d, which I think need a keys file of some sort. the keys are the same from 3.60-3.73. I forgot what 0syscall6 actually does to make newer games work, but it wouldn't work if the keys had actually changed. it says that on the github from what I remember.
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yep, here's where it says that:
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yep, here's where it says that: