Volvo S60 2023 B4
After the release of version AAOS 3.3.16 of the China version of Volvo, a previously non-existent performance mode could be activated via voice control, and there was a noticeable change in the transmission logic once activated. However, after an unperceived OTA update (which I believe was an OTA for voice control, not a system update), Volvo re-disabled this capability. Therefore, I think the performance mode is just a switch, and the logic for the performance mode had already been added to the vehicle during the system update.
After the release of version AAOS 3.3.16 of the China version of Volvo, a previously non-existent performance mode could be activated via voice control, and there was a noticeable change in the transmission logic once activated. However, after an unperceived OTA update (which I believe was an OTA for voice control, not a system update), Volvo re-disabled this capability. Therefore, I think the performance mode is just a switch, and the logic for the performance mode had already been added to the vehicle during the system update.