1. Check your firmware version first: "Home Menu" > "Initial Settings" > "Options" > and there simply press the "Display" button on the remote. It will display the region and firmware version information.
2. The latest firmware for DV-575A is
2.09. It is a much better firmware than the earlier one (especially, if you use DivX).
3. You can upgrade either asking for the firmware from Pioneer or finding v. 2.09 on the net. First method is the safest. Here is a site where v.2.09 is also available, though there is no information whether it is the original one, so download and use it on your own risk:
http://www.avland.co.uk/pioneer/dv575/dv575.htm
Good luck.
P.S.: Yes, it can play DVD+R DL disks and very well.
