That is an old version so it's a good idea to try BIOS F9g
These are from his config.plist: iMac19,1 Headless platform ID 0x3E980003 Because the correct keyword is "model" instead of "AAPL,model", only the AMD Radeon RX 580 is being set correctly. I must have missed the posts(s) advising to change from "AAPL,model" to just "model". I'll change it...
In this version, CFG-Lock
is already disabled by default. But please remember to configure the rest of BIOS parameters based on this:
- Press F2 to toggle to Advanced Mode.
- Press F7 to Load Optimized Defaults.
Now make the following settings:
- Advanced CPU Settings → VT-d → Enabled
- Extreme Memory Profile (X.M.P.) → Profile 1
- Internal Graphics → Enabled
- Above 4G Decoding → Enabled
- Thunderbolt(TM) Configuration
- Security Level → No Security
This will trigger a 'Save & Exit' dialog so press ESC to close the dialog.
- Discrete Thunderbolt(TM) Configuration
- Thunderbolt USB Support → Enabled
- GPIO3 Force Pwr → Enabled
- USB Configuration
- Windows 8/10 Features → Other OS
- CSM Support → Disabled
CaseySJ, you are the Master!
After upgrading the BIOS, as you said CFG-Lock is disabled with BIOS settings (except I couldn't do CSM Support → Disabled) and worked brilliantly. Now the Bluetooth automatically worked and related AirDrop, etc.
I tried a few times and I figured CSM Support - Disabled my system did not boot up, I tried 2 times and I had to do CMOS reset. So I leave it Enabled, I don't know what would affect leaving it enabled.
To keep track and let others know My CSM Support Enabled settings like this:
- LAN PXE Boot Option ROM - Enabled
- Storage Boot Option Control - UEFI
- Other PCI devices - UEFI
Thank you again and this thread is awesome.