my new-ish 1640p drive won't detect most of the 9 Ritek G04 DVD-Rs i have here. It burned one just fine a few days ago (it even plays well on other drives), but now the discs usually aren't detected at all (drive light goes out after a few attempts).
The few times it does detect them, they are unusuable; Qscan fails scanning usually straight away, or sometimes scans OK for ~100secs, then fails (it complains about incompatible firmware, but that's just the wrong error message for a scan error - it scans other media just fine) - and Nero fails burns as soon as it tries to write (even in simulation), leaving discs blank.
I've tried P2.4, P2.5, and the latest BenQ firmwares, no change. I even tried flashing in Safe Mode (although I'm pretty sure that's just a myth - the flashers verify what they've written; if the write failed they would pick it up).
However, a couple of times when flashing, it failed early in the flash, and I had to retry (it then succeeded). Might be related.
Has anyone seen this before with this media or drive? I also have one Datasafe disc it never detects, but I'm also burning a 2.4x DVD+R (CMC MAG R01) successfully right now, and it's still reading CDs and DVDs OK ...
RMA time, flash related problem, or bad batch of discs?