I have a doubt on this, from a famous website documenting MIDI (yes, I should wait the MMA publish the new full specification, but I can't wait
0x7F The SysEx channel. Could be from 0x00 to 0x7F.
Here we set it to "disregard channel".
0x06 Sub-ID -- General Information
0x02 Sub-ID2 -- Identity Reply
0xID Manufacturer's ID
0xf1 The f1 and f2 bytes make up the family code. Each
0xf2 manufacturer assigns different family codes to his products.
0xp1 The p1 and p2 bytes make up the model number. Each
0xp2 manufacturer assigns different model numbers to his products.
0xv1 The v1, v2, v3 and v4 bytes make up the version number.
0xF7 End of SysEx
Here, the manufacturer ID appears to be one byte only, while it is one or three bytes for SysEx messages (not in this reply payload) and for sequencer specific meta‑events in MIDI files.
Is this really one byte or was this an error at that time which was later fixed?