DigiTech Midi Implementation Manual page 124

Number of patches (5 or 10)
Set to 5 if 5/10 Patch mode flag is 0
Set to 10 if 5/10 Patch mode flag is 1
Set selected in utility menu (0-9)
Selects which set is displayed in the foot controller utility display.
Patch selected in utility menu (0-9)
Selects which patch is displayed in the foot controller utility display.
Current patch (0 - 9)
Last patch from foot controller.
Active speaker simulator (0 - 13)
0 - 8 Factory Speaker Simulators 1-9
9 - 13 User Speaker Simulators U1-U5
5 User Speaker simulator definitions, U1 - U5
Each speaker definition is 6 bytes long. (5 * 6 = 30 bytes) The value of
each byte may be 0-24. (See the definition for the 63 hz parameter for what
these values mean.)
Byte 1 160 Hz
Byte 2 400 Hz
Byte 3 1.0 kHz