Andddd that was the issue. Lmao I cannot believe I didn't check that sooner.My same question still applies from the other thread.
https://gbatemp.net/threads/questions-after-getting-cfw.410134/#post-5970585
Are you using the TubeHax DNS, or other router blocks, which might prevent your 3DS from contacting the Nintendo update servers?
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Okay, my emuNAND finished updating, and when I booted into emuNAND it said it was updating the home menu, and then it blacked out and booted me back into homebrew. Now I can't launch emuNAND through rxtools anymore.