Question about buying a used MacBook Air and OS systems
I purchased my current MacBook Air in 2019, and it runs OS 10.14 (Mojave). Everybody tells me I should upgrade, but until recently, it does everything I want it to, so I haven't seen the need.
But now I need to buy a new machine because MS is retiring Skype in a week, and I use that app a lot to communicate with loved ones. They are replacing Skype with something called Teams Free; this app requires a minimum OS 13 (Ventura). I was told by an Apple rep that I would not be able to upgrade my machine that high.
At first I thought I was going to have to put down a grand for a brand-new machine, but then I thought about buying a used one on eBay for a lower price.
So I've been checking eBay for used laptops with an OS of at least 13, and have noticed a curious thing. Many sellers are offering machines that were made in 2019, 2018 and even 2015 and saying that their OSs have been upgraded to Ventura and even Sonoma. I called Apple Care earlier today and the rep told me that it would be impossible to install such a new OS on such an old machine.
What's even stranger is that the sellers are companies that have a long-time eBay presence with a very high feedback score. So I don't think they're in the business of trying to rip people off. Their machines come with warranties as well as free returns.
The sellers say these machines have the OS I need; Apple says they can't. My brain wants to explode. Can someone explain this situation to me? Thanks.
MacBook Air 13″