The info supplied by Philips for updating firmware gives the option of using USB for those machines having that facility. WARNING ! Do not use the USB route, it can corrupt your machine leaving it showing 'Starting ' in the display and being unusable. Following is statement from Philips Consumer Care ; 'Please accept our apologies for the difficulties you are experiencing with your DVDR5570H, as some time uploading software via USB can result in files becoming corrupted when transferred to USB.' You might ask why, if Philips know of this problem, they are still suggesting it as a means of updating your firmware, I certainly did, when arranging the return of my 5570H which is a very attractive doorstop, of course I did'nt get an answer ! You have been warned.