>>281916
>What I'm having trouble understanding is why the CMOS battery is relevant
Here's an article detailing it: https://archive.ph/MVKx0
<According to reports, the last-generation console uses its CMOS battery as an internal clock, which cannot be viewed, changed or altered by end-users. Theoretically, this prevents people from gaming when their consoles award trophies. However, the PlayStation 4 requires a working CMOS battery to run games, too.
<Hence, a dead CMOS battery renders the console useless, preventing it from opening games of any form. This is true of games bought on disc too. Replacing a dead CMOS battery will resolve the problem, but that requires people to open their consoles, which they may feel uncomfortable about that.
<Worse still, replacing the CMOS battery only restores the PlayStation 4’s functionality if it can access the PlayStation Network to reset its system clock. So, you should only replace the CMOS battery if you can connect your PlayStation 4 to the internet.
<...
<Essentially, The same pitfalls of a dead or faulty CMOS battery apply to the PlayStation 5 as they do with the PlayStation 4. Both consoles require a working CMOS battery to award trophies, but the PlayStation 5 relies on its battery to run digital games too. Apparently, Sony’s latest console can play physical discs to varying successes, although this is not ideal either.