Lenovo T420 installs hackintosh and supports sonoma. Lower system versions have not been tested and may be supported.
CPU: i7 2670qm
iGPU: HD3000
Wireless: CF-WU810N (USB wireless card)
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First change the model to iMac19,1, then install the system. After the system installation is completed, change the model back to MacBookPro8,1
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Install kdk (https://github.com/dortania/KdkSupportPkg)
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Install patches using OCLP (https://github.com/dortania/OpenCore-Legacy-Patcher)
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[optional] USB wireless card driver (https://github.com/chris1111/Wireless-USB-OC-Big-Sur-Adapter) or (https://github.com/chris1111/Wireless-USB-Big-Sur-Adapter)
Broadcom Wireless Card driver has been added, but has not been tested, may be supported
