A new firmware update for Sony’s QX10/QX100 Lens-Style cameras has been released moving it from version 2.00 to 3.00. Improvements include the ability to half-press the shutter to focus and a reduction in NFC one-touch connection times.
Another change is the ability to use your Sony Xperia’s camera key for the shutter release. Download instructions can be found below, do not that you will need PlayMemories Mobile app version 4.2 or later for this to work.
DSC-QX10/QX100 Firmware Upgrade Ver. 3.00