Version 4.0_pre3

The Sonoma Story

Changes

• Reduce TakeoffDelay to 1 second for faster bootup
• Migrate existing boot-args to DeviceProperties keys
• Switch SSDT-PNLFCFL to SSDT-PNLF due to deprecation (See Release 0.7.6 · acidanthera/OpenCorePkg)
• Remove the unnecessary SSDT-PMC (See What SSDTs do each platform need | Getting Started With ACPI)
• Add SSDT-TPL1 back for the touchscreen
• Fix HDMI audio by removing FakePCIID.kext and FakePCIID_Intel_HDMI_Audio.kext, which are incompatible with WhateverGreen and AppleALC
• Disable VoodooPS2Mouse.kext and VoodooPS2Trackpad.kext, as VoodooPS2Keyboard.kext is the only effective part from VoodooPS2

Problems still exist

• The built-in microphone doesn't work

Notes

The version of AirportItlwm used in this pre-release is an alpha version for testing only according to their release notes, so you should report bugs to them if you occurred any. The stable release of 4.0 for this project, with complete and stable Wi-Fi support, can be expected after its stable version comes out.

Checksum

2006310aa74bd73961ead038ad6fc5c4e8b6a549  OpenCore-EFI-Laptop-Lenovo-Yoga-C740-14IML-4.0_pre3.zip

Version 4.0_pre2

The Sonoma Story

Changes

• Upgrade AirportItlwm to v2.3.0-alpha build ff1138b for Wi-Fi support on macOS Sonoma

Problems still exist

• The boot picker doesn't show up (neither when Misc -> Boot -> PickerMode is set to Builtin nor External)
• The built-in microphone doesn't work

Notes

The version of AirportItlwm used in this pre-release is an alpha version for testing only according to their release notes, so you should report bugs to them if you occurred any. The stable release of 4.0 for this project, with complete and stable Wi-Fi support, can be expected after its stable version comes out.

Checksum

cfa68c34d5269114a3c67136e59efdf8dc50891b  OpenCore-EFI-Laptop-Lenovo-Yoga-C740-14IML-4.0_pre2.zip

Version 4.0_pre1

The Sonoma Story

Changes

• Add support for macOS Sonoma 14
• Upgrade OpenCore to v0.9.5
• Upgrade all EFI drivers and kernel extensions (except for AirportItlwm, see the Notes below) to the latest version
• Fix the touch screen
• Cleanup unused items in the OpenCore config.plist
• Cleanup unused boot picker resources

Problems still exist

• The boot picker doesn't show up (neither when Misc -> Boot -> PickerMode is set to Builtin nor External)
• The built-in microphone doesn't work

Notes

Wi-Fi support is removed from this release, due to the lack of a AirportItlwm version with macOS Sonoma compatibility. The stable release of 4.0, with complete and stable Wi-Fi support, can be expected after it comes out.

Checksum

80d67ca73b5401394e98565a6364780340c28698  OpenCore-EFI-Laptop-Lenovo-Yoga-C740-14IML-4.0_pre1.zip

Version 3.0

"Season" Ventura

Changes

• Add support for macOS Ventura 13
• Upgrade OpenCore to 0.8.5
• Upgrade all EFI drivers and kernel extensions to the latest
• Cleanup unused SSDTs
• Re-generate the SMBIOS info
• Refactor the readme file

Problems still exist

• The touch screen doesn't work
• The built-in microphone doesn't work

Checksum

bc84421a704ab553abce7ffcaba9476b5b2a52a5  OpenCore-EFI-Laptop-Lenovo-Yoga-C740-14IML-3.0.zip

Version 2.0.1

Changes

• Add missing BlueToolFixup.kext to /EFI/OC/Kexts/

Problems still exist

• The touch screen is not stable during using
• Built-in microphone failed to drive

Checksum

8f8438bac07617a532f959a5d4b5a6c1568c9f8d  OpenCore-EFI-Laptop-Lenovo-Yoga-C740-14IML-2.0.1.zip

Version 2.0

Changes

• Upgrade OpenCore to 0.7.8
• Upgrade all EFI drivers and kexts to the latest version
• Fix two major bugs under macOS Monterey 12

Problems still exist

• The touch screen is not stable during using
• Built-in microphone failed to drive

Checksum

0ca3951940c353ec29b2f27a9fb9977f2749ef07  OpenCore-EFI-Laptop-Lenovo-Yoga-C740-14IML-2.0.zip

Version 2.0_pre1

Hello Monterey!

Changes

• Upgrade OpenCore to 0.7.4
• Update boot picker resources
• Change boot picker style to "Acidanthera\GoldenGate" (modern)
• Upgrade all EFI drivers and kexts to the latest version
• Rewrite config.plist for being compatible with OpenCore 0.7.4
• Add support for macOS Monterey 12
• Some small changes in the readme

Problems still exist

• The touch screen is not stable during using
• Built-in microphone failed to drive
• System Preferences app crash (or freeze or throw a "Could not load ... preference pane" error) when trying to open the following panes:
  • Siri
  • Accessibility
  • Network
  • Bluetooth
  • Mouse
• Extremely low OS startup speed

Checksum

857193e8c4ea678d99d080c92500ca0c1e1430cc  OpenCore-EFI-Laptop-Lenovo-Yoga-C740-14IML-2.0_pre1.zip

Version 1.3.1

Changes

• Update to OpenCore 0.6.9
• Update all kexts to the latest version

Problems still exist

• The touch screen is not stable during using
• Built-in microphone failed to drive
• Wi-Fi cannot run at full speed

Version 1.3.0

Changes

• Update to OpenCore 0.6.6
• Replace the original theme with the theme downloaded from here

  The theme used in early versions is from third parties. But OpenCore 0.6.6 doesn't seem to be compatible with the original theme (only text picker can be displayed if you use it), so I switched to the theme from Acidanthera, which is also the owner of OpenCorePkg.

Problems still exist

• The touch screen is not stable during using
• Built-in microphone failed to drive
• Wi-Fi cannot run at full speed

Version 1.2.2

Changes

• Fix the name of SSDT-EC0_Off
• Fix some mistakes in config.plist

Problems still exist

• The touch screen is not stable during using
• Built-in microphone failed to drive
• Wi-Fi cannot run at full speed