Toyota Safety Sense 2.5..can it be upgraded to 3.0 for wireless apple car play?

My Sienna is a 2023 XLE, and, my salesperson indicated it TSS 2.5, but maybe there is a way to check that, not that it may make much of a difference.
Yes, I notice it can/does connect to wifi, and, of course, it will also connect to my Iphone 13. Some Apps appear on my car screen when connected to the phone.
You are correct, I no doubt have "MORE THAN A FEW" misconceptions. And, the TSS probably is indedpendent of wireless car play, but, it sounds like TSS 3.0 upgrades both of these..the infotainment and the wireless car play. There is obvious interaction between my phone (obviously upgradable) and the car, which apparently is not upgradable, or at least might not be upgradable.
If it took some parts (hardware upgrades), too, then Im willing to go for that. This 2023 was just made in Dec. 2022, so it should have close to the very latest technology, what ever that is.
For example, I noticed few, if any 2023 Sienna owners had trouble with the battery rundown problem caused by the hands free sensors so prevalent in 2022 Sienna models. So, there had to be differences between the 2022 and 2023 Sienna's, even tho they may not be visible "even with a magnifying glass".

Since a computer (hardware) is only as good as its software, and, of course, this car and other new cars are becoming more and more "like a computer" every year, it makes sense this may be upgradable.

With a Lexus I recently owned, it had an on board navigation. It had 2017 "maps" since it was a 2017. The dealer is able to upgrade those maps, for a fee, of course. So, there is some device that hooks up to the car and enables an upgrade. I hypothesized this may also be available in the 2023 Sienna, with 6 year newer technology.

Since a new car is "mostly operated by computer", and, I know the importance of software upgrades for security in computers, it may be a design flaw that it can not be upgraded. The reason is, hackers may soon, if they havent already, figure out how to hack the car and steal it. Apparently this is already done by Kia's. The car sends out a signal looking for the key fob..your key fob. And, when it finds it, the car works. Well, this constant signal emitted by your car looking for a key fob definately means there is wireless capabilities. And, there is little doubt in informed minds, cars are hackable.

Therefore, a security upgrade is almost inevitably needed on any modern car with modern technology. "Along with" Security upgrades (that is, bug fixes which allow hacker access), most software companies "put in new features" with the security upgrade. This way, they can call it an "upgrade" instead of a "bug fix". Microsoft, for example, does not use the term "bug fix" as its very negative connotations. Instead, they call them Updates or upgrades, and sometimes throw in a new feature to motivate people to install upgrades.

Car companies, tho certainly not software experts, are likely to follow suit with Apple and Microsoft's naming convention using the terms upgrade and update, instead of the more realistic "bug fix". Its a bad vibe to pay 50 grand for a car needing a bug fix to keep it from being stolen or hacked, but its much better to "update to new features and cool stuff", oh, and also have bug fix patches installed at the same time.

Im hoping a nerd will or has and will publish a way to upgrade this to TSS 3.0. There should be little doubt this upgrade actually means a safer car, since it upgrades the Toyota Safety Sense, in no small part responsible for the safety technology such as adaptive cruise, or forward collission warning and braking.

Its "unconscionable" that Toyota would make its owners drive a "less safe" car, because they did not allow sofware upgrades almost certainly some of which woulld repair "bugs" in the saftey technologies.

To add, my key fob sends out a signal, that is intercepted by my car, with an electronic key which makes it work. So, hackers simply carry around a device, see you walking toward your car, and this device intercepts the key fob signal, copies it, and makes an electronic key. Your thief then follows you home, downloads the signal key he just stole, and makes a key fob with the key YOU gave him, and poof, he steals your car with the electronic key he made copying yours.

I dont know how to fix this security problem, but I think you can temporarily disable the key fob from broadcasting a signal that could be hijacked by hackers, by removing the fob battery or turning it off when not "actually in use" starting your car.

Car thieves have already figured this out, on Kia's. Its probably just a matter of time until they also do this on Toyota's...and it will take some kind of upgrade to prevent thieves from simply copying your electronic key which is emitted constantly by your key fob.

If the car company has the technology to "capture the fob electronic key signal", then surely a hacker can/has build a device to accomplsh this also.

Frankly I have no idea how they prevent hackers from stealing your car, because that technology pretty much has to be available, else the car company could not use a wireless key fob.

No, Im not saying "99 percent of people are car thieves", but, it only really takes "1" out of the million or so people in my city, to steal my car using the fob signal stealing device. Not all of them, just one. It reminds me of the guy at the beach.
He picked up a starfish, and threw it in the ocean. He walked a little farther, and picked up another and did so likewise. His bewildered friend asked what he was doing?
Well, that starfish will dry up and die, so I throw them in the ocean.
His friend responded, "that's crazy..you cant throw all the millions of starfish in the ocean..what does that one matter?"
He said, "Oh, but it matters a lot to "that one" starfish", but maybe not for you.
I cant stop all the car thieves, but I would like to stop "that one" who may steal my car.

I think you are right...there would be some "hardware" upgrades to upgrade to TSS 3.0 and not just software, perhaps even a new infotaiment screen. THis upgrade may well be "cost prohibitive". I have no idea "what" a "yaw" sensor is. It sounds like you know much more about this than me. A little reading suggests, however, that my Toyota already has a yaw sensor, but maybe not one in the radio?