Just inherited a broken Macbook Pro 2010 17". Repaired it and installed Big Sur 11.4 by accident, as I replaced the Hard Drive with an SSD with a backup of 11.4 and Opencore. Worked perfectly. Confused, but elated. Wiped it and reinstalled 11.2.3 instead and used OCLP after the install. Again works perfectly, except backlight. Weirdly before OCLP, backlight was working but screen brightness was not. After OCLP, it's the other way round. Not bothered really as I'm still amazed Big Sur works on it at all.
This will be my daughters machine when I have installed Windows 10 bootcamp. Thanks to everyone who created the OCLP.