I presume your BH100 is from the UK? As 44 45 is DE and 82 we've established is used in the UK:
I see you've changed the fourth set of numbers from 82 to 80. What made you change it to 80? I don't think that number has been brought up before.
I must say I'm confused as it was established the fourth set handles NTSC/PAL and SD DVD MR meaning:
00 - USA/Canadian default + NTSC Only + SD DVD Region 1
82 - UK default + PAL & NTSC + SD DVD Region 2
8D - Aussie default + PAL & NTSC + SD DVD Region 4
02 - User guessed + PAL & NTSC + SD DVD Region Free
With it set to 80 it seems to give -
* BD Region A
* SD DVD Region 2
* PAL & NTSC - I'm presuming NTSC is still supported?
You say 80 makes it Region A (from Region B) that is indeed interesting. It sounds like you maybe on to something as you can still playback Region Free BDs.
Further questions sorry
* What Region B BD did you try? Are you sure it's Region B?
* Do you have any Region 1 SD DVDs to test?
* Do you have any NTSC Region Free SD DVDs to test?
How we're going to find the code that gives the lot is anyone's guess
* PAL & NTSC
* SD DVD Region Free
* BD Region Free or BD Region A & B - C isn't important
It sounds like it's the same field (fourth value) that controls PAL/NTSC, SD DVD MR and BD MR, and we just need to find the right value. Finding the value that changes it from BD Region A to Region B would be a start.
If I can suggest can we please call it Region A for BD and Region 1 for SD DVD. It's less confusing that way.
You might be right about the BD region coding, BUT what I've observed:
To clarify I was referring to the third set of values not fourth, as I see you've changed