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Did you give those 26 discs a good cleaning before attempting to rip them again? If not, that is your first port of call. A firmware change most likely won't make a difference. If cleaning the discs doesn't work, get another drive, preferably a Pioneer from one of the sellers here. I have with my b...

I have a LG UH12NS40 with the original firmware of 1.0 and It has worked okay allowing me to rip 40/66 UHD disks. Of the 26 disks that wouldn't rip I got either 'Read Errors' or 'Hash Check Errors' which led me here to figure out it's probably the drive having issues. The dilemma that I am now runni...