As everyone probably knows,
DVD players are limited by software to watch
DVD of the region the player was bought from.
The user can change the region 4 times
(the first time is changed automatically
when the first DVD is played).
After some research I found that
many players have secret SCSI commands to
reset the counter.
This is called vendor reset.
Also this is limited though.
And can be used only 5 times.
But since I don't like commercial limits,
I wrote a small utility that can reset everything.
Have a look at this github link.
The script has been tested and it's guaranteed
on LG (and HP) DVDRAM GUD0N and GUD1N
It can work also on many other LG players
probaby GT series, but I can't vouch for them
since I only have these two in my laptops.
The bash shell script works AS IS in linux (tested on ubuntu)
and CYGWIN on Windows.
(donations are welcome)