I was checking the support page of the Predator PH315-51 and to my surprise the software section had an updated predator sense on 31/12/2019. Now, I had been hoping for a while that acer would grace the older helios model with the new predator sense with mobile pairing, but after I downloaded this peculiar updated predator sense it turns out my model isn't supported. So I think it was mistakenly uploaded to this product support page
Here's the link
This needs to be corrected even though I thankfully have a copy of the latest compatible predator sense for my device safely stored, others who come looking for it will find an incompatible version.
One last thing, can you just add the phone pairing to older models? we are many and we all want it