So TLDR, created a bootable USB installer, mounted the EFI partition on the USB installer, added the EFI folder containing the latest OpenCore and all the updated versions of the kexts I use.
Copied the same EFI folder into my install SSD's EFI folder - reboooted and tested launching the USB installer via the now updated Opencore 1.0.6 - it worked, which in my experience means it'll install fine.
Installed over the existing install.
Checked everything worked - it did, but I did re-enable trim in terminal, as it wasn't enabled on my SATA SSD, but was on my NVME (had this before), that went fine and once rebooted, was showing enabled.
Flawless
Ran a Time Machine backup for good measure
I kept the USB bootable installer for any re-installs or future issues should I need to go back to a known working version of MacOS.
Copied the same EFI folder into my install SSD's EFI folder - reboooted and tested launching the USB installer via the now updated Opencore 1.0.6 - it worked, which in my experience means it'll install fine.
Installed over the existing install.
Checked everything worked - it did, but I did re-enable trim in terminal, as it wasn't enabled on my SATA SSD, but was on my NVME (had this before), that went fine and once rebooted, was showing enabled.
Flawless
Ran a Time Machine backup for good measure
I kept the USB bootable installer for any re-installs or future issues should I need to go back to a known working version of MacOS.
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