Problems with Philips SPD2400L1

i had problems with my philips dvd r/rw burner - Philips SPD2400L1,(it burned every dvd+r on 1.4x speed, burning of dvd-r wasn’t posible, allways calibration error ). I downloaded this new firmware - Y5H4 and now it burns dvd’s ok with every speed, but it doesn’t read it. When dvd+r is done i put it back and it doesn’t read it, and burnnig of dvd-r still is not possible.
anyone can help please!!!

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