Any way to fix Dell DW 1601 for Mojave ?

I have a Dell Latitude e7240. Following this guide (Polish can be translated with Google Chrome auto-translate), I was able to install Mojave 10.14.3. It works great. The only problem is Wifi/BT. My wifi module is

Dell Wireless 1601 802.11 a/g/n Adapter

PCI\VEN_168C&DEV_0034&SUBSYS_020D1028&REV_01

This page told me that this module is unsupported.

Vendor Model Format Ven-Dev Chip Rate Si HS Mj OOB Kext (driver)

Dell DW1601) ½Min PCIe 168c-0034 AR94621 A/B/G/N/AD Y ? * N (=AR5B22)

However, they also told that there is a method to turn this module on.

/!\ Mojave 10.14 dropped support for Atheros cards. If you have an Atheros model supported in previous macOS versions, the workaround is to install the Atheros40 kext from an earlier release like High Sierra 10.13.6, i.e. copy to /L/E + repair permissions + rebuild cache. /!\

10.13.6_AirPortAtheros40.kext.zip

I have no idea how to make this possible. Could you help me please to guide me through this process? Thanks in advance

submitted by /u/sanchower23
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