Return Firmware Version - Pioneer DVD-V5000 Command Protocol Manual

Execution :
String
MU<CR>
6.36

Return Firmware Version

Function : Returns player firmware version
Format : ?Z
Explanation : The command lists a number on the monitor that is the player's
current firmware version.
Execution :
String
?Z<CR>
Status Return
R<CR>
...(11,134
bytes)...<CR>
R<CR>
Status Return DVD player
1.026 Returns current firmware version
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DVD-V5000 DVD Player
RS-232 Command Protocol
DVD player
Park mode
Receives the command and
starts the transfer of the data,
11,134 bytes (ends with <CR>)