BCM4359 is not supported in the upstream kernel. brcmfmac4359-sdio experiments · chewitt/[email protected] · GitHub will result in card detection allowing BT to work but the driver has an issue loading WiFi firmware. I'm actively trying to resucitate an attempt to diagnose the issue with kernel maintainers, but it doesn't seem to have much traction with them yet - it will take time.
I cannot comment on the eMMC issue other than saying to check the UUID is correct.
Thanks for your reply. There are distros based on 4.4 kernel from Mrfixit2001 and ayufan for rockpro64 that have functioning wifi. I believe the BT works as well but I haven't confirmed that. The chipset also functions in android 8-9. If there is anything I can do to help move this forward LMK.