1. Connect to Win SCP using your box IP 192.168.x.x with same user & password root
2. Extract all picons in a new folder on your mobile/pc
3. Highlight all picons & move into your box /media/usb/picon
It is better to use a additional USB drive on your box instead of using HDD. Choice is yours. If you choose HDD then the location is /media/HDD/picon
See the pictures.