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Awesome recovering to BU40N 1.0 worked. Thanks MartyMcNuts. And thank you Billycar. Hooked back up to the linux box and loaded that disk with no more AACS errors.

For whoever comes after me and finds this thread, here are instructions for cross-flashing a [BP50NB40 SVC NB50] flashed with [BP60NB10 ...

no if anything bu40n 1.00 is better
you can go back
yes thats the correct one
DE_LG BU40N_1.00.bin
you can


Awesome thanks for confirming.

The SDFtool Flasher doesn't seem to want to write the "DE_LG BU40N_1.00.bin" firmware to the drive. It doesn't give any errors, and it says it was ...

You can also go to 1.00 bu40n


Awesome thanks. I'll give that a shot. Sorry I have a bunch of questions now.

Is there any downside to downgrading to that firmware in terms of read speed or AACS version supported or triple-layer support?

Is it a one-way street? Or could I flash back to ...

Aha! I found this thread after running into the same behavior with a BP50NB40 flashed (first to BP50NB40-NB50-1.03MK and then) to BP60NB10 1.02MK.

Seems to work fine on my windows machine (I was able to rip a UHD Bluray I own) but on linux (also in a container fwiw) I get that AACS certificate ...

It's the hardest of all to flash but it can work but the best Uhd drive are pioneers


Is it hard to flash just because you have to flash it in succession with multiple firmwares like

BP50NB40 to > BP50NB40-NB50-1.03MK then to > BP60NB10 1.02MK or 1.00MK

Or is there something else to be wary ...

Any reason not to pick up this BP50NB40 https://www.bestbuy.com/site/lg-8x-external-usb-2-0-blu-ray-disc-double-layer-dvdrw-cd-rw-disc-rewriter-black/9243009.p?skuId=9243009 with an expectation to be able to flash it to rip UHD Bluray disks via makemkv?

Is the only way to determine "SVC NS50+ LG ...