iMac (27-inch, Mid 2011) Mac OS upgrade

[K S K]

Hi,

I need to upgrade OS on a my iMac (27-inch, Mid 2011) with AMD Radeon HD 6970M 1024 МБ.
Any suggestions in advance?

Thanks in advance,

 

[Bigwaff]

I need to upgrade OS on a my iMac (27-inch, Mid 2011)

Catalina 10.15 is latest supported by your iMac

 

[BrianBaughn]

Another "suggestion" is to use OCLP to upgrade it past Catalina.

 

[Fishrrman]

OP:

Which OS do you want to upgrade TO?

At 13 years old, it's probably time to be looking for either a new Mac, or a "late-model-used" one.