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PlayStation 5 consoles reportedly no longer lose game playing functionality when their internal CMOS battery dies.
That’s according to a new analysis by Hikikomori Media, which appears to confirm that a PS5 with a missing or expired CMOS battery can now run physical and digital PS4 and PS5 games.
The only exception are games claimed via a PlayStation Plus subscription, which will no longer work with an expired or removed CMOS.
Previously, tests suggested that PlayStation 5 consoles would retain some game playing functionality after their CMOS batteries died, but most physical PS5 discs and all digital games would no longer boot.
The CMOS battery powers PlayStation consoles’ internal clock, and when players try to start a game on the console it will compare the internal clock with the date and time on a remote server to make sure the player is verified to play them.
If the battery is removed or dies, the console will ask players to manually enter the date and time when it boots, and then attempts to sync the date and time online.
However, previously when the PlayStation Network was experiencing server issues and the console couldn’t connect to it, no games would be playable.
This previously meant there was a risk that should Sony ever close the PlayStation Network in the future, and given that the CMOS batteries naturally die over time, it would theoretically lead to consoles eventually being unable to play games.
Following much discussion around the issue earlier this year, Sony released a September firmware update for the last-gen PlayStation 4 which ensured that the console would continue to work when the CMOS battery died.
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