You can’t convert them back to 60hz but try this:-
Hit the menu button on the remote, then navigate to “sampling opt” on the LCD and hit “OK”. Now, use the remote to find “Adv. Timing” and hit “OK” again. The options you want to change are:-
V.active – change from 288 to 240
V.backporch – change to 50.
Adjust V.backporch and H.backporch to taste to center your image.
Patching games – That depends on the game and would need to be done on a case by case basis. I doubt patches would exist if there’s already a perfectly good NTSC/US version.