[lurkerforawhile]

Firmware anti-downgrade functionality with eFuses is common across all kinds of consumer devices. The physical evidence is there, if you can find it.

<https://en.wikipedia.org/wiki/EFuse> <https://free60.org/Hardware/Fusesets/#fusesets-07-11> <https://switchbrew.org/wiki/Fuses#Anti-downgrade> <https://arstechnica.com/gadgets/2022/08/google-gives-develop...>

[gosub100]

People play games, not firmware. The claim is not to revoke sonys ability to update the hardware.

[pocksuppet]

New firmware can easily come with new security checks though, and I think other consoles have done this in the past.

[lurkerforawhile]

use your brain