bradford61 wrote:
The wireless keyboard or tracker lock up frequently, and they do not hold a charge for more than a few days at a time. They work fine with a cord attached. My daughter believes it may be time for an upgrade, or new desktop, as she believes these computers age out in a relatively short time.
Upgrading MacOS will not do anything to fix a dying keyboard. Just get a new keyboard if your current machine meets your needs.
In any case, a 21.5 inch iMac from 2017 can't be upgraded beyond Ventura, which is now 2 years behind. So there is a good case for getting a new machine to benefit from the newest MacOS features, and to avoid not being able to download apps because they require later os versions.