X280_SEQUOIA_SUCCESS!!

[JSblah]

Following the wiki instructions (mostly) I was able to successfully install Sequoia 15.3.2 on the Lenovo X280!

Pre install:

• I skipped the first part of the wiki and downloaded the installer then created USB on a real MBP with instructions from the Opencore guide then continued with the wiki instructions on this repo using the real MBP to build edit the config.plist and add the EFI to the installer using MountEFI tool
• On the real Mac download the HeliPort app (if using intel wifi) and move it to a separate USB for later
• Using ProperTree insert the real MAC address of the laptop, set language, and enable SSDT-OFFTB.aml patch (you can re-enable after install but thunderbolt still not working)
• Make sure BIOS settings are correct
• Install (internet connection not needed if you made the installer on a real Mac)

Post install:

• Install the HeliPort app to get wifi if using intel wireless
• Using MountEFI tool moved EFI from installer to main drive
• Use ProperTree to edit DeviceProperties > Add > PciRoot(0x0)/Pci(0x2,0x0) > AAPL,ig-platform-id and changed value to 0000C087
• Under Misc > Boot > ShowPicker change to "False" (optional to hide opencore menu at boot)

Working/Not Working are the same as the repo OP but BT is not working with my intel wifi. I ordered a Broadcom wifi chip and will be testing when it arrives.