LG BP50NB40 NB50 Not Flashing Correctly

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Yoghurtty
Posts: 2
Joined: Sat Jun 25, 2022 8:49 pm

LG BP50NB40 NB50 Not Flashing Correctly

Post by Yoghurtty » Mon Nov 03, 2025 2:36 am

Hi all,

Just used the Flash GUI to flash this drive. Followed the steps as shown. Flashed to 1.03, then recovered to BU40N 1.0. And now nothing. It wont read any disc and I have to force eject it. Just spins forever "reading" the disc no matter if its a UHD or not. Attached is a screenshot of the drive info on MakeMKV. All help is appreciated.

Thanks,
Noah

dcoke22
Posts: 4127
Joined: Wed Jul 22, 2020 11:25 pm

Re: LG BP50NB40 NB50 Not Flashing Correctly

Post by dcoke22 » Tue Nov 04, 2025 4:21 pm

Yoghurtty wrote:
Mon Nov 03, 2025 2:36 am
Hi all,

Just used the Flash GUI to flash this drive. Followed the steps as shown. Flashed to 1.03, then recovered to BU40N 1.0. And now nothing. It wont read any disc and I have to force eject it. Just spins forever "reading" the disc no matter if its a UHD or not. Attached is a screenshot of the drive info on MakeMKV. All help is appreciated.

Thanks,
Noah
The Ultimate UHD Drives Flashing Guide says:
WP/BP50NB40 to > BP50NB40-NB50-1.03MK then to > BP60NB10 1.02MK or 1.00MK
I'm not sure why you tried the BU40N firmware?

MartyMcNuts
Posts: 4082
Joined: Wed Nov 22, 2017 11:45 pm

Re: LG BP50NB40 NB50 Not Flashing Correctly

Post by MartyMcNuts » Tue Nov 04, 2025 10:41 pm

dcoke22 wrote:
Tue Nov 04, 2025 4:21 pm
Yoghurtty wrote:
Mon Nov 03, 2025 2:36 am
Hi all,

Just used the Flash GUI to flash this drive. Followed the steps as shown. Flashed to 1.03, then recovered to BU40N 1.0. And now nothing. It wont read any disc and I have to force eject it. Just spins forever "reading" the disc no matter if its a UHD or not. Attached is a screenshot of the drive info on MakeMKV. All help is appreciated.

Thanks,
Noah
The Ultimate UHD Drives Flashing Guide says:
WP/BP50NB40 to > BP50NB40-NB50-1.03MK then to > BP60NB10 1.02MK or 1.00MK
I'm not sure why you tried the BU40N firmware?
Shouldn't matter. I also prefer BU40N 1.00 over any BP60NB10 firmware and is what I put on these drives.

Yoghurtty, how old is the drive? What's the manufacture date on the sticker underneath the drive? Are you sure it is SVC NB50?
Cheers :D
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For UHD enabled drives (AU/NZ/SG + Others) & DIY Single Drive Flasher (WW): https://uhdenableddrives.com

Yoghurtty
Posts: 2
Joined: Sat Jun 25, 2022 8:49 pm

Re: LG BP50NB40 NB50 Not Flashing Correctly

Post by Yoghurtty » Wed Nov 05, 2025 1:49 am

MartyMcNuts wrote:
Tue Nov 04, 2025 10:41 pm
dcoke22 wrote:
Tue Nov 04, 2025 4:21 pm
Yoghurtty wrote:
Mon Nov 03, 2025 2:36 am
Hi all,

Just used the Flash GUI to flash this drive. Followed the steps as shown. Flashed to 1.03, then recovered to BU40N 1.0. And now nothing. It wont read any disc and I have to force eject it. Just spins forever "reading" the disc no matter if its a UHD or not. Attached is a screenshot of the drive info on MakeMKV. All help is appreciated.

Thanks,
Noah
The Ultimate UHD Drives Flashing Guide says:
WP/BP50NB40 to > BP50NB40-NB50-1.03MK then to > BP60NB10 1.02MK or 1.00MK
I'm not sure why you tried the BU40N firmware?
Shouldn't matter. I also prefer BU40N 1.00 over any BP60NB10 firmware and is what I put on these drives.

Yoghurtty, how old is the drive? What's the manufacture date on the sticker underneath the drive? Are you sure it is SVC NB50?
The drive was manufactured April of 2018 and the box says SVC Code: NB50. Thanks for the help!

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