This is the latest firmware version for iUSBportCamera2
1.) It fixed the Nikon D7100 tap focus issue
How to update firmware?
1.) Prepare a USB flash drive and save the attached firmware into it, keep the file name as it is.
2.) Insert the USB flash drive to the unit and power it up
3.) Wait till the screen shows "Update vxx to v47" and press power button one time to proceed
4.) The unit will be off once the firmware update is completed