Amazing! It works 
Thank you so much, to both of you! Now to make it easier for the OP to follow:
Step 1: Installed the 5.4.173-1 Kernel
Step 2: Installed the corresponding kernel headers
Step 3: Installed the packages ‘make’, ‘gcc’ and ‘wget’
Step 4: Downloaded the driver from GitHub - davidjo/snd_hda_macbookpro: Kernel audio driver for Macs with 8409 HDA chip + MAX98706/SSM3515 amps
Step 5: Changed script as per ishaanbhimwal’s instructions
Step 6: Installed the script as descriped on github