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Update: I had reached out to Billy about perhaps buying a new Pioneer player with the firmware flashing installed. We chatted briefly via email about my existing BU40N drive, and he also suggested cleaning the disc(s), but also the laser on the drive itself. So I cleaned the laser on the drive with ...

Thank you for the feedback. I tried cleaning the UHD disc per your description. Result: no disc. Like I said, regular blu-ray disc play with no issues, so it seems unlikely the drive and/or laser on the drive is defective. I'll return the two discs and perhaps try another UHD for another test. Good ...

I'm trying to flash a HLDS BU40N. Feb. 2017 manufacturer date. It came as part of a Dell XPS desktop I bought in 2017. I've had the drive but I haven't tried to update it before since I didn't realize it was UHD compatible. But I checked on the drive label and it said "UHD player" which.....

I'm trying to flash a HLDS BU40N. Feb. 2017 manufacturer date. It came as part of a Dell XPS desktop I bought in 2017. I've had the drive but I haven't tried to update it before since I didn't realize it was UHD compatible. But I checked on the drive label and it said "UHD player" which......