www.makemkv.com

Ah I see, I wasn't on the newest version. Flashed it to 1.04 and I can finally rip 4K blurays. Thank you so much!

Hello there!

I have the same drive (BU40N), with the same firmware and the same problem.
It's also not encrypted, but how so you 'manually select encryption'? I see no option like that in the GUI of SDFtool Flasher.
Or are you using a different GUI?

Best regards,

Mango Reader.