personally i have mine on a usb on the back of my box
Use any FTP client, DCC for example, to transfer the picon directory to
one of the following paths on Flash, HDD, CF or USB respectively:
/usr/share/enigma2
NOT recommended, because of limited capacity of the flash memory
/media/hdd
HDD will keep running indefinitely and may affect image performance
/media/cf
Recommended if CF available and successfully mounted (8000/800)
/media/usb
Recommended if USB available and successfully mounted (8000/800)
Picon will display immediately on zapping, no further setup required!
Always remove old picons from Dreambox before uploading new ones,
Sometimes they don't overwrite correctly