@kdsjH would you mind helping me with the bluetooth?Hi,
to get WiFi working you need to copy AirportAtheros40.kext from an existing High Sierra installation. You find it under /System/Library/Extensions/IO80211Family.kext/PlugIns/. Copy it to the exactly same location in Catalina, make sure your device id is listed in the Info.plist inside AirportAtheros40.kext, repair permissions and rebuild caches using your favorite kext installer, reboot.
@kdsjH would you mind helping me with the bluetooth?
Yah that method is not working tooGitHub - RehabMan/OS-X-Atheros-3k-Firmware: Atheros 3k kernel extension (kext) for mac osx lion/mountain lion - firmware upload.
Atheros 3k kernel extension (kext) for mac osx lion/mountain lion - firmware upload. - RehabMan/OS-X-Atheros-3k-Firmwaregithub.com