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Okay, my drive was flashed successfully when I ignored the error. After being flashed, it isn't bricked and rip UHD discs smoothly, which means it's good, isn't it?

I just took a spare HP BU40N to see if I just ignored the error and tried to flash it according to the guide, what would happen?
The flashing process went completed and MakeMKV saw new information of the drive. I put a standard and even a 4K Blu-ray to test, MakeMKV detected the discs and ripped ...

Of course I did, the "enable Internet access" box was checked by default. The drive is connected into SATA connection directly because my main PC is a laptop and I swapped the stock DVD slim drive for the BU40N one. And I'm currently using Windows 10 64-bit.

I did try a standard Blu-ray disc of mine lying around. The funny thing is the drive was recognised in Windows, but when I put the disc in, MakeMKV detected and tried to load the disc, but ended up showing that "No disc inserted". The flashing tool still threw the same "Incorrect string format ...

Yeah I didn't change anything when installing MakeMKV. Also the drive tray was closed and no disk was inside when I plugged it in through direct SATA connection and opened the tool. I'm using the latest Windows 10 build, installing the latest MakeMKV version from the website.

Hello!
Sorry for my very late response. I just came back from my long vacation.
Anyway, I did tried putting an UHD disc in, and the drive didn't do anything. So I went ahead and tried flashing my drive using your software and the firmware pack file. After selecting the drive, the tool immediately ...

Hello everyone, totally a newbie here. Quick question, is the HP BU40N drive "just" the LG BU40N with HP label? If the answer is "yes", that means I could flash my drive using the ultimate guide to unlock UHD Blu-ray ripping, right? Here's the specs of my drive:
Model: BU40N (S05NT)
Firmware: BW42
H ...