Does anybody has a suggestion for this:
I tried to change the regional code on my Zenith XBV443 combo DVD/VHS player and it keeps displaying "Check Regional Code"

Although it is known that the PROM values are as follow, the last set of numbers on my DVD is different being 64 instead:
55 53 00 45 12 05 64 00
00 00 C0 40 20 00 03 48

I tried to Change the 45 (first Line) to 47 and the 48 (second line) to 74.

Although Follow the procedure don't obtain results
( 1 ) Power DVD on with empty disc tray
( 2 ) PAUSE
( 3 ) hit 1472 on remote
( 4 ) Arrow up and down to highlight values
( 5 ) Input new values, hold numbered key for letters.
( 6 ) ENTER after each change
( 7 ) PAUSE again to update PROM
( 8 ) Power off to reload PROM on next Power on.