// readme

Lenovo Legion Y9000P IAX10H(83F5)— OpenCore EFI(macOS 15 + macOS 26)

OpenCore EFI for Lenovo Legion Y9000P IAX10H / board 83F5 / Intel Core Ultra 9 275HX / RTX 5070 Ti Laptop.

The repository now contains two EFI folders. Use the one that matches your system version:

DirectoryTarget systemStatus
EFI-Sequoia/EFI/macOS 15 Sequoia(15.2+)Primary, long-term verified: speakers (ALC287 + dual AW88399), BE200 Wi-Fi, Bluetooth A2DP, and brightness all working
EFI-Tahoe/EFI/macOS 26 Tahoe(26.4+)New, tested to boot to desktop. Before the NVIDIA driver is installed it is extremely laggy (about 1–3 FPS); it runs normally once the driver is installed

Both are placed inside their own EFI/ directories (EFI-Sequoia/EFI/, EFI-Tahoe/EFI/). Copy the whole EFI directory directly to the ESP root without renaming it (it overwrites the existing EFI, but keep EFI\Microsoft, otherwise Windows boot will be lost). Do not mix the two: the Wi-Fi /…