@RehabMan As promised here are current files from my latest attempt. EFI Folder in ZIP (
EDITED TO ADD the Aptio Fix drivers were also included in the drivers64UEFI folder - I dumped to ZIP after the final attempt with no AptioFix kext), Bios Screenshots in zip and jpg of final freeze screen.
Here is what I adjusted
updated the UniBeast Install stick to Clover_v2.4k_r4722. It is a USB2 stick.
Removed all kexts from Other except FakeSMC.kext, IntelMausiEthernet.kext, Lilu.kext and WhateverGreen.kext
Set all entries in KextsToPatch to Disabled
Removed -uia_exclude_xhc from Arguments in Boot
Added HFSPLus.efi
The other drivers in drivers64UEFI are ApfsDriverLoader-64.efi, DataHubDxe-64.efi, OsxAptioFixDrv-64.efi, FSInject-64.efi and SMCHelper-64.efi - are the last two necessary?
I tried both OsxAptioMemoryFixDrv.efi and AptioMemoryFix-64.efi and in both cases the boot process stopped as before and the Brix rebooted after around 10 seconds.
On a whim I booted minus any Aptio Fix and although the process stopped in the same place I did not have a reboot - is that expected behaviour?
I just realised you meant me to update the USB Installer with your version of Clover so have downloaded it (Clover_v2.4k_r4701.RM-4963.ca6cca7c) and applied it to the installer - I still had the same outcome with the two Aptio fix drivers but without any Aptio fix the Brix still rebooted after 10 seconds approx.
Just going to re-apply r4772 from Sourceforge and see if the non reboot after the freeze is repeatable. Yes - it is repeatable after 3 boots the system still stops with a row of plus's after End RandomSeed but does not reboot. So I can affect the way the system responds by removing the Aptio fix - is this relevant or am I clutching at straws?