Apple has released an update to OS X bringing the latest version to El Capitan 10.11.2.
This update brings
Improvements to Wi-Fi reliability
• Improves the reliability of Handoff and AirDrop
• Fixes an issue that may cause Bluetooth devices to disconnect
• Fixes an issue that prevented Mail from deleting messages in an offline Exchange account
• Fixes an issue that prevented importing photos from an iPhone to a Mac using a USB cable
• Improves iCloud Photo Sharing for Live Photos