How I kept my iMac running for a decade | Cult of Mac
Install memory in an iMac - Apple Support
Can I upgrade my 2011 iMac to Catalina - OurDeal.co.uk
Review: macOS Catalina 10.15 is what Apple promised the Mac could be, and is a crucial upgrade | AppleInsider
Download macOS Catalina Patcher | MacUpdate
How to Install MacOS Catalina on Unsupported Macs | OSXDaily
How to update from Catalina 10.15.7 to Catalina 11 on a 2011 Macbook : r/MacOS
Big Sur on iMac 27", Mid 2011, flashed 4GB NVIDIA Quadro K4100M by Nikey22, having issues with screen brightness, any ideas? Brightness control was working with Catalina Patcher, after installing Big Sur
iMac Mid 2011 GPU acceleration problem after installing Catalina dosdude1 Patcher 2020 | MacRumors Forums
Mac OS Catalina en un Mac no compatible: Guía de instalación - Flopy.es