: Improved pairing speed and compatibility with newer smartphone operating systems (iOS/Android). System Performance
No Testmode menu after toolbox instalation step one ... - GitHub
Based on the structure, this most likely refers to one of the following:
: Improvements in system responsiveness and menu navigation speed.
While the firmware update improves the system, it does not automatically "unlock" features like CarPlay or Voice Control if they were not purchased from the factory. Swap Codes
Extract the downloaded firmware files directly to the root of the SD card.