all Protocol Negotiation messages will probably be used in the UMP forma
Devices default to using MIDI 1.0 and only use extended MIDI features after two Devices have agreed via MIDI-CI to use those extended features.
The Initiator sends this confirmation test message in the new Protocol.and shows a MIDI 1.0 Sysex F0/F7 message in practice this is a UMP Sysex7 UMP without the F0/F7.
On a per-Group basis, the Sender and Receiver shall cooperatively select exactly one MIDI Protocol at at time using either the MIDI-CI mechanism
Those transports are expected to have the UMP as the native format for both MIDI 1.0 and MIDI 2.0.Does that mean there will be USB devices that only recognize UMP messages and won't recognize MIDI 1.0 BYTE formatted messages at startup and MIDI-CI protocol negotiation in UMP won't be not required (but optional on a per group bases if the sender wishes to do so)