I have a new (1 month) Crosstar. I had more expectations from the infotainment, but I can confirm that the subwoofer works as expected. The cut-off frequency is quite low (I like that) and this could make it difficult at first to hear the effect. I suggest to do some tests with lossless music, in a quiet place and double check the streaming settings. Many providers compress audio files and Bluetooth does not help, still the subwoofer presence should be evident.
I did not do any update so far as the car is new and I have been struggling with the Honda app. It finally works, maybe it could be much easier and I still need to go through four levels of authorisation/consent each time I want to use it.
I tried a few times to connect to Wi-Fi and hotspot but the car refused to proceed with the software update or to access the Honda app Centre.