www.makemkv.com

the_pharaohs_cat wrote: Wed Jan 21, 2026 10:21 am Hiya,

I've been having trouble trying to use SDFtool Flasher. Sorry if I miss out relevant details, I'm new to all this stuff.


Below is my drive information from MakeMKV:

Drive Information
OS device name: D:
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.05
Serial number: MO5P5MF1048
Firmware date: 2124-04-23 13:47
Bus encryption flags: 17
Highest AACS version: 61

LibreDrive Information
Status: Possible, not yet enabled
Drive platform: MT1959


I was attempting to use the SDFtool Flasher today, but I kept encountering the following error message:

Input string was not in a correct format.


When I expanded it to see the details, this was the message:

System.FormatException: Input string was not in a correct format.
at System.Number.ThrowOverflowOrFormatException(ParsingStatus status, TypeCode type)
at System.Convert.ToInt32(String value)
at SDFtool_Flasher_Updated.Form1.<>c__DisplayClass46_0.<<button_START_Click>b__2>d.MoveNext()
--- End of stack trace from previous location ---
at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)


I'm not sure if I'm flashing the correct file. I've tried LG_BU40N_1.03_MK and LG_BU40N_1.00.

Sorry if these are obviously the wrong files, as I said above, I'm rather new to all of this. Any help would be appreciated.

Thanks.

Szary Kot wrote: Thu Jan 22, 2026 8:23 am I'd like to ask the experts on the subject which is better to buy: BW-16D1HT BOX or Verbatim 43888?
Which lasts longer?, Does the sleep error also affect the Verbatim 43888?

Noob123 wrote: Mon Jan 05, 2026 10:31 pm I'm new to the forum and this is my first post.

I recently purchased a Verbatim 6888 optical drive and attempted to use the SDFtool Flasher to flash the firmware. The internal drive is the BU40N model. I have attempted to back up several of my UHD discs but they have all failed. Can anyone check my drive information to verify that I have successfully enabled LibreDrive?

Drive Information
OS device name: /dev/rdisk7
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.00
Serial number: -
Firmware date: 2116-12-20 15:28
Bus encryption flags: 17
Highest AACS version: 81

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Original (unpatched)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

Noob123 wrote: Fri Jan 23, 2026 8:02 pm I have a follow up question.

Does it matter which firmware version I have installed in terms of being able to read the most amount of UHD and Blue Ray discs? I have been having been experiencing a lot of back up failures recently and am wondering if it is related? I read that someone had installed Firmware version 1.03 and that had resolved some disc readability issues they had been having. Should I stick with firmware version 1.00?

Noob123 wrote: Mon Jan 05, 2026 10:31 pm I'm new to the forum and this is my first post.

I recently purchased a Verbatim 6888 optical drive and attempted to use the SDFtool Flasher to flash the firmware. The internal drive is the BU40N model. I have attempted to back up several of my UHD discs but they have all failed. Can anyone check my drive information to verify that I have successfully enabled LibreDrive?

Drive Information
OS device name: /dev/rdisk7
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.00
Serial number: -
Firmware date: 2116-12-20 15:28
Bus encryption flags: 17
Highest AACS version: 81

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Original (unpatched)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

bemml wrote: Mon Jan 26, 2026 6:49 am sorry to bother you, but the mediafire links are not working anymore.

MartyMcNuts wrote: Wed Jan 21, 2026 10:12 pm Ensure MakeMKV is installed in the default location (C:\Program Files (x86)).
Ensure there is no disc in the drive and the tray is closed.

I assume this is a Verbatim 43888, 43889 or 43890? As v1.05 is encrypted, you must use BU40N_1.03_MK first. Once flashed, you can leave it or then flash to BU40N_1.00.

Szary Kot wrote: Wed Jan 28, 2026 5:38 pm Hi Marty,
What's the difference between the BU40N_1.03_MK firmware and the BU40N_1.00 firmware?
I'm asking from a user perspective.
Does one support BDXL discs better than the other?
I'm mainly concerned about writing discs.
I know that version 1.00 is compatible with other programs, not just MakeMKV.

gock01 wrote: Sat Jan 31, 2026 3:58 pm Hello,

I have a Verbatim 43888 DVD player, model number: BD-RE BU40N
Revision: 1.05

I haven't flashed it yet, but if I flash it one day and later want to revert to the original firmware as it was when I bought it, how can I do that?
I haven't been able to find the original firmware file on the Verbatim website.

Thank you for your help.


Data from Make MKV before flashing
Drive Information
OS device name: F:
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.05
Serial number: *****
Firmware date: 2124-04-23 13:47
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Possible, not yet enabled
Drive platform: MT1959

meepster wrote: Fri Feb 06, 2026 9:12 pm i have a ASUS usb drive was wonderring what do i need to flash with to make is Usable.
i have the flasher and all the firmwares just wondering what one or ones i need to use the drive is encrypted.

Drive Information
OS device name: G:
Manufacturer: ASUS
Product: BW-16D1X-U
Revision: A105
Serial number:
Firmware date: 2120-12-02 11:14
Bus encryption flags: 1F
Highest AACS version: 70

LibreDrive Information
Status: Possible, not yet enabled
Drive platform: MT1959

No disc inserted