Sorry, as I write the sysex parser, I notice that there are also other  changes to the protocol.

Here is an example of dump:

Line 1:  [1] 0 5 2

Is digit #2 the algo? is #3 a constant 5. what is the last digit? 

Line 2:  0 4000 3fbe 3ff0 0 3ee7 0 0 3f5e 3f15 7fe0 ffff

What is effect parameter (#1) How it is related to algorithm or presets?

The Factor doc states taht the last parameter is Exp pedal value and should be < 7FE0

So is FFFF a special value  for EXP (such as deactivated?)

Line 3:  0 0 0 0 0 0 0 0 0 3f20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Ok for line 3, look sthe same as the doc.

Line 4:  0 2ee0 1 ffffd8 9 7 6 0

Line 4 is not documented, seems to be new for the H9.

Line 5:  49.55 49.35 1 0 48.7 0 5 49.06 1.48 99 65000 65000

There are 4 floating point values on facto pedals, it seems that there are a few more on the H9.

Line 6: C_67d3

Ok.

Line 7: BIG CLONE

It seems to be the preset name 🙂

Please, could you help me fiil the missing parts?

Thank you for your time and patience…

Guillaume.