Yeah, after 2 ***** hours the AirPods Pro still shows old firmware version. I will see if leaving it charged overnight could solve the problem.“There's no standard way to upgrade the firmware of the AirPods, with the new firmware installed over-the-air while the AirPods are connected to an iOS device. Putting the AirPods in the case, connecting the AirPods to a power source, and then pairing the AirPods to an iPhone or an iPad should force the update after a short period of time.”