Updating the Firmware in OSX
Download the latest firmware + installer files here: TLPFW_20150818_OSX
After downloading, extract the zip file.
2. Connect the Timelapse+
Connect the Timelapse+ device to the computer with the USB cable (connected on the right-side port of the device) and boot in DFU mode: While holding the top-right and top-left buttons of the Timelapse+ device, momentarily press the down button to boot into DFU mode (the red light will flash).
3. Update Firmware
Right-click (Ctrl-click) the "update-firmware" program in the folder and select "Open"