I recently bought a DVR-K15 from an ebay-seller. The drive was sold as defect but was recognized from BIOS. For only 15â‚¬ I though it is worth the risk and as soon I installed the drive I updated the FW to 1.11 and I can read and burn any DVD without any problems and at full speed (8x). CDs will not be recognized, neither burned, bought )pressed) or empty ones.
I already tried the OEM FW 8.11 but no change.