Help! Is there a way to bypass Apple's restriction on updating the OS on an older Mac?
I have a late 2012 iMac that I bought in 2013 with an upgraded processor (3.4 Ghz Quad-Core Intel Core i7) and RAM (32GB), and a 3TB hard drive (all of which I paid extra for to keep this computer for the long haul), but Apple won't let me upgrade the OS anymore (I am stuck on Catalina 10.15.7), even though the computer works perfectly and has ample power. Now I am getting messages from other software (Microsoft Office, e.g.) warning me that I need to upgrade my OS in order to update their software, including security updates, etc.
Is there any way to overcome Apple's restriction on upgrading past Catalina? Is there any legitimate reason this computer cannot run Big Sur, for example? Thanks in advance for any advice!
iMac Line (2012 and Later)