I am not 100% sure what you are trying to say here. But uname always returns the Kernel number of the currently running Kernel. So yes, Vero is running Kernel 4.4.0 and I am not sure if it ever has run 3.14.
You also could have read the blog post of January update that tells you Vero now uses 4.4 OSMC's January update is here! - OSMC
In regards to your tuner If you would have searched the forum you would have seen a few people talking about it and at least here someone with success Dvb-c usb-stick
If you have any doubt about your stick working I suggest to post the dmesg logs so that we can review.