UOP disabled means that your movie can no longer cancel your commands. If it is set, only normal playback is allowed during that period. It is not possible to press pause or fast forward. If access restrictions are disabled, you can do whatever you want during that time. If the modification supports this feature, you can pass the video signal through your video recorder.
More information is available on request.
Every DVD disc has a list of allowed region codes. If the region check is disabled, the player will ignore the region of the disk without changing it s own region code. If the disk is checking the region code itself, it will display a region error message if the region codes do not match. Modifications for Panasonic players using this function on their region 0 setting. Some modifications allow turning the auto switch on and off as an additional setting to the region selection, some are switching automatically if region 0 is selected.