Can't Rip from a supposed clean iso

[Reineke26]

I have some Blu-rays that have reading problems but I managed to make a clean iso with ddrescue. It reported a clean image but when I tried to actually rip the movie I get reading errors halfway through. Does that mean the file on the disk is corrupted from the get go or that ddrescue is wrong?

[barnstarmer]

What is the model of your drive?
What drive firmware are you using?

LG drives that use LG firmware usually have a feature called jamless playback. If a disc had a scratch, the drive would skip that section so the movie wouldn't freeze during playback. The problem is that this feature reports false reads to ddrescue. The only fix is to use flash ASUS firmware, but these are only available for "5.25 desktop drives. If you have an LG slim drive like a BU40N, you're stuck with LG firmware and jamless playback.

[Reineke26]

I'm using a BH50N with LibreDrive firmware from the Forum.

[MartyMcNuts]

I'm using a BH50N with LibreDrive firmware from the Forum.

Which is an LG. What firmware did you flash it to?

[Reineke26]

I flashed the "DE_LG_WH16NS60_1.02_MK.bin" from the "All you need firmware pack" from MartyMcNuts. I know everything still works, I successfully ripped everything from CDs to UHDs.