Hi Tamsy,
I wish you had a brilliant Christmas! 
While the older version can be updated via OTA, it doesn’t support these new advanced functions. That is why we have released this new version. I’ve shared more details in another post, as development is almost complete. Could you take a look and see if this fits your needs?
Heiman smoke alarm HS1SA-EF-2nd new features in ZHA and Z2M - Home Assistant Community