I've bought a JVC XVS-302 and it plays all media CDR-CDRW-DVD-R-DVD+-dvd-RW-DVD+RW.

NOW this is the problem.

I advised a collega of mine to by this dvd player so she could watch all kinds of dvd's. Now it does not play the dvd+rw and dvd-rw.

What coult be the problem ?

Is it possible that the firmware does not compare, is the a fimware patch ?