iUSBHD firmware v27

1. Save the attached firmware, "IUSBHD.SEF" into a USB thumb drive and keep the file name as it is.
2. Insert the USB thumb drive into the device and power it up
3. Wait till the screen on the device shows update "Vxx to v27", press the power button one time to proceed.
4. Once the firmware update  is completed, the unit will be off

Bug Fixed:
        1, Adjust battery parameters for longer battery life.
        2, Lower the electric threshold to address ‘Replace Cable’ warning

New Features:
        1, Add Apple USB Ethernet Adapter driver.