[SOLVED] No audio in Chrome OS Flex on N42 Chromebook

I currently have a Lenovo N42 Chromebook far past it's EoL, for which Google is no longer supporting it. I have put Chrome OS Flex on it by reflashing the bios, and it's pretty solid, but I have no internal audio. Bluetooth audio and HDMI works fine, but no headphones, and no speakers.

I found this solution for trying to hack in an Alsa configuration from an Ubuntu Live Disk (https://www.reddit.com/r/chromeos/comments/swzxsy/comment/irk5kqk/) and I was able to follow the instructions and enable development mode, but when I try to run the alsaconfig script, I get this.

crosh> shell
chronos@localhost / $ sudo alsarestore
No state is present for card chtrt5650
/usr/sbin/alsactl: sysfs_init:48: sysfs path '/sys' is invalid

Found hardware: "chtrt5650" "" "" "" ""
Hardware is initialized using a generic method
No state is present for card chtrt5650

It may have something to do with those instructions being for a different build computer, but I am outside my sphere of knowledge, and anything else I could troubleshoot would be appreciated. Internal audio isn't mission critical for me, but it would be appreciated.