Hello there. I have a 2011 MBP and i use a lot the hotspot function of my iPhone. My MBP has the older Bluetooth version, which means that some continuity things wont work, such as handoff. I was wondering if anyone knows if the Instant Hotspot works with older Macs or requires Bluetooth 4.0? This information is vital to decide if i'm going to update my iPhone ir not. Thank you in advance.