I first heard about it a month ago on nostr:npub15879mltlln6k8jy32k6xvagmtqx3zhsndchcey8gjyectwldk88sq5kv0n's podcast and since have tried to digest what I could from other sources too, I see nostr:npub1mrechz2tgtmspqc9e6l30dyfy4j57g43srzcvxupzs0cpn8h9pyqwms0g5 is doing a hive talk about flashing them tonight, but a good place to start looking is fresnomesh.org