Archived posting to the Leica Users Group, 2002/04/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Dennis, Of course there are many ways one "could" do it, but my main point was cheapo units like this don't have FLASH, they use mask programmed PROMs (or even mask programmed CPUs), which can not be updated electronically, they must be removed (by unsoldering them from the PCB) in order to replace them. Austin > -----Original Message----- > From: owner-leica-users@mejac.palo-alto.ca.us > [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Dennis > Painter > Sent: Wednesday, April 24, 2002 10:37 AM > To: leica-users@mejac.palo-alto.ca.us > Subject: Re: [Leica] DVD region codes (was Ansel Adams on PBS TV) > > > Hi Austin, > > The easy way would be a firmware disk. When you load the disk it > would recognize > it as a firmware disk. With the front panel display and buttons > selection of a > region to load is simple. > > That is how I would do it. > > Dennis > > Austin Franklin wrote: > > > > With the next wave of players the > > > modification became a firmware upgrade - new software was > > > downloaded to the > > > player and this took minutes without the need to open up the machine. > > > > Joseph, > > > > How does that work? What does one hook up to so that the cover > doesn't have > > to come off, to download the new firmware? > > > > I agree it's firmware, but I don't agree it's just "downloaded" without > > opening the cover, there is no port on the box that allows > that, at least on > > my DVD. I believe it's a mask programmed PROM on a PCB in the > box, and it > > has to be replaced. The manufacturers aren't going to use > FLASH or EEPROM > > for program storage since they are expensive, and the profit margins on > > these boxes is tight. > > > > Austin - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html