Please post help requests in the Catalina Desktop Support Forum section (not in this thread).
Pre Update Notes:
- This update may break some of your Catalina functions, like audio.
Make sure you backup first.
- Make sure you use the latest versions of the
Lilu.kext,
AppleALC.kext and
WhateverGreen.kext. They will be in the
Downloads > Kexts area.
Here's the step by step way to update:
Backup your current installation using Carbon Copy Cloner (see the link above to CaseySJ's script) or SuperDuper;

(Optional - See Note) Update to the latest Clover
See the tonymacx86 Clover Builds (in Download menu) to update Clover.

Update Lilu, WhatEverGreen and AppleALC, placing them in your /EFI/.../Clover/kexts/other/. Remove these kexts from the /Library/Extensions/ folder. If you haven't already, move any other hackintosh kexts from /Library/Extensions/ folder to the .../Clover/kexts/other/ folder. Then run the following Terminal command to rebuild the macOS cache:
Code:
sudo kextcache -system-prelinked-kernel
sudo kextcache -system-caches

If you are updating from 10.15.2, then you don't need to apply any new Port Limit Removal Patches. If you are updating from macOS before Catalina, apply any
10.15.0 Port Limit Removal Patches. Better yet, if you have created a SSDT-USB, then you're all set.

Download the Catalina 10.15.3 Update in Post #1 or the update from Apple's Mac App Store and run it - the updater will reboot upon completion.
Note: Update will reboot teo times; each time Clover picks the correct boot partition. So, sit back and relax.
ch: Done! So far, another easy update!
Please post help requests in the Catalina Desktop Support Forum section (not in this thread).