Continuity Activation tool This tool makes the necessary modifications to enable OS X 10.10 Continuity functions on compatible hardware. This tool activates Continuity features such as Handoff, Instant Hotspot and New Airdrop.
Download Continuity Activation Tool For MAC
Adds compatibility with Bluetooth 4.0 USB dongles, allowing many Macs from 2008 and later to easily upgrade to Continuity. See the chart below to verify available upgrade options.